chemical reaction Crossword Puzzles

Chapter 4 vocabulary words 2023-11-07

Chapter 4 vocabulary words crossword puzzle
Across
  1. A is any change that alters the form or appearance of a substance but does not change into another substance.
  2. In a matter does not enter or leave
  3. A change in matter that produces one or more substances is a
  4. In an ,the energy released as the products form is greater than the energy required to break the bonds of the reactants
  5. A increases the reaction rate by lowering the activation energy needed
  6. A is the amount of a substance in a given volume
  7. A reaction occurs when compounds break down into simpler product
  8. In an ,more energy is required to break the bonds of the reactants than is released by the formation of the products
Down
  1. If two elements in different compounds trade places
  2. When two or more elements or compounds combine to make a more complex substance
  3. A is the minimum amount of energy needed to start a chemical
  4. A is a way to show a chemical reaction using symbols instead of words
  5. A state that during a chemical reaction matter is not created or destroyed
  6. A is a solid that forms from liquids during a chemical reaction
  7. In a matter can enter from or escape to the surroundings
  8. The cells in your body contain thousands of biological catalysts called
  9. Substances that undergo the chemical changes are called
  10. The new substances that form are the
  11. A is a number placed in front of a chemical formula in a equation
  12. A material used to decrease the rate of a chemical reaction is an

20 Clues: In a matter does not enter or leave • The new substances that form are the • A is the amount of a substance in a given volume • If two elements in different compounds trade places • Substances that undergo the chemical changes are called • In a matter can enter from or escape to the surroundings • A is the minimum amount of energy needed to start a chemical • ...

Unit 5 Chemistry 2025-12-12

Unit 5 Chemistry crossword puzzle
Across
  1. A substance that is made up of two or more elements that are chemically bonded together
  2. the chemical reaction in which the reactants will always make a product of carbon (co2) and water (h20)
  3. in a chemical reaction you put in a _________ to produce a product
  4. the chemical reaction in which two or more elements combine together to create a compound
  5. a molecule made up of two atoms of the same type are called a ________ _______
  6. the chemical reaction where one element replaces another element in a compound
  7. when a cation (metal) bonds with an anion (non-metal) then the bond is _____
  8. what is produced from a chemical reaction
Down
  1. A number added in front of a chemical formula to create a balanced equation
  2. the chemical reaction in which two elements in two different compounds swap
  3. Bonus: the only artist's music we should be listening to in chemistry class is ______ ________
  4. the chemical reaction in which a single compound breaks down into two or more products
  5. the process in which you add coefficients to have a ________ equation
  6. an atom or molecule with a negative or positive charge
  7. when a cation (metal) bonds with another cation (metal) then the bond is called ________
  8. ________ bonds are formed when a non-metal bonds with another non-metal
  9. the periodic table is composed of all known chemical ________
  10. The small number on the bottom right hand of a chemical element or formula
  11. Bonus: one of the best chemistry teacher ever

19 Clues: what is produced from a chemical reaction • Bonus: one of the best chemistry teacher ever • an atom or molecule with a negative or positive charge • the periodic table is composed of all known chemical ________ • in a chemical reaction you put in a _________ to produce a product • the process in which you add coefficients to have a ________ equation • ...

Science 2025-04-29

Science crossword puzzle
Across
  1. – To test and decide how good or useful something is.,
  2. - A chemical reaction that releases heat energy (Reaction gets hot to the touch),
  3. - A number in front of a chemical formula in a balanced equation, indicating the number of molecules involved.,
  4. A substance that is formed in a chemical reaction. ,
  5. - a limit or restriction that the design must follow. It tells you what you cannot do or what conditions you must work within. ,
  6. - A chemical reaction that absorbs heat energy (Reaction gets cold to the touch),
  7. - To make the best use of a situation, opportunity, or resource.,
  8. A substance that readily allows for flow of electricity ,
  9. - A substance that speeds up a chemical reaction.,
  10. - An initial creation of a product that demonstrates its usefulness,
  11. Energy - The minimum amount of energy needed to start a chemical reaction.,
Down
  1. – When you give up one thing to get something else.,
  2. A substance that does not readily allow for flow of electricity.
  3. A system in which energy can be lost to the environment. ,
  4. – A smaller or simpler version of something that shows how it works.,
  5. - A small number written below an element symbol in a chemical formula, indicating the number of atoms of that element.,
  6. - the standards or requirements that a design or solution must meet in order to be considered successful. Or, the rules or goals your design must follow or achieve.,
  7. A substance that participates in a chemical reaction. ,
  8. – A new or improved idea, method, or device.,
  9. A system in which energy cannot be lost to the environment. ,

20 Clues: – A new or improved idea, method, or device., • - A substance that speeds up a chemical reaction., • – When you give up one thing to get something else., • A substance that is formed in a chemical reaction. , • – To test and decide how good or useful something is., • A substance that participates in a chemical reaction. , • ...

Chemical Equations and Reactions 2025-02-04

Chemical Equations and Reactions crossword puzzle
Across
  1. a small whole number that a appears in front of a formula in a chemical equation
  2. represents the reactants ands products of a chemical reaction by their symbols
  3. represented by a (g)
  4. An equation in which the reactants and products in a chemical equation are represented by words
  5. the decomposition of a substance by an electric current
  6. a solid that produced as a result of a chemical reaction
  7. a single compound undergoes a reaction that produces two or more simpler substances
  8. two or more substances combine to form a new compound
Down
  1. ions of two compounds exchange places in a aqueous solution to form two new compounds
  2. a substance combines with oxygen, releasing a large amount of energy in the form of light and heat
  3. represented by an arrow in a chemical reaction
  4. represented by an (s)
  5. dissolved in water symbol
  6. what we start with in a chemical reaction
  7. a representation of a chemical reaction that uses symbols to show the relationship between the reactants and products
  8. one element replaces a similar element in a compound
  9. what is formed in a chemical reaction

17 Clues: represented by a (g) • represented by an (s) • dissolved in water symbol • what is formed in a chemical reaction • what we start with in a chemical reaction • represented by an arrow in a chemical reaction • one element replaces a similar element in a compound • two or more substances combine to form a new compound • the decomposition of a substance by an electric current • ...

Chemical Puzzle 2022-06-19

Chemical Puzzle crossword puzzle
Across
  1. A solution in which the solvent is water
  2. A solid that is formed during a chemical reaction in a solution
  3. Result of a chemical reaction, on the right of a chemical equation
  4. Dissolves a solute, creating a reaction
  5. A type of reaction where a compound breaks down into elements or simpler compounds
  6. A chemical reaction where two or more compounds come together to produce one bigger compound
  7. Unit of measurement used by chemists
Down
  1. The number of atoms present in an molecule or a formula unit
  2. The smallest particle of a substance that has all of the physical and chemical properties of that substance
  3. Elements found on the left side of a chemical equation
  4. studies substances in an element
  5. Indicates the number of each substance in a chemical reaction
  6. Seperates the reactants and products in a chemical equation
  7. Reaction A reaction involving the emition of heat
  8. Dissolved in the solvent

15 Clues: Dissolved in the solvent • studies substances in an element • Unit of measurement used by chemists • Dissolves a solute, creating a reaction • A solution in which the solvent is water • Reaction A reaction involving the emition of heat • Elements found on the left side of a chemical equation • Seperates the reactants and products in a chemical equation • ...

8th grade topic 9 Chemical Reactions 2024-12-08

8th grade topic 9 Chemical Reactions crossword puzzle
Across
  1. a mixture that you can see the separate parts
  2. what does the dissolving In a solution
  3. this type of reaction takes simple things and combines them to make them more complex
  4. this small number following an element’s symbol in a chemical equation tells you how many atoms of that element are present in the reaction
  5. if a solution is _________ then it is able to dissolve more solute at a given temp
  6. if chemicals change ___, it may indicate a chemical reaction has taken place
  7. if a solution is _______ then it contains more solute than a saturated one. Solution is unstable and may form crystals
  8. if this (tiny bubbles) are produced during a reaction, it may indicate a chemical reaction
  9. these are catalysts in our body that speed up chemical reactions
  10. a chemical reaction occurs when existing chemical ___ are broken and new ones may be made
  11. what gets dissolved in a solution
  12. increasing this will cause particles to move faster and will increase the reaction rate, lowering it will decrease the rate
  13. in this type of reaction system, the reaction is contained, matter cannot enter or exit
  14. in this type of chemical reaction system, the environment can influence the reaction, or matter can enter and escape from the reaction
  15. a ___ change is one in which the appearance of the matter changes, it does not change what it is
  16. a compound that prevents or slows down a chemical reaction
  17. these are examples of synthetic foods- they are added too food to make them last longer
  18. salt and water are considered ___ ___ because they have fixed chemical compositions
  19. a mixture where particles can be seen and separated by settling or filtration.
  20. a mixture containing small undissolved particles that do not settle out- they may be too small to see, but they can scatter light.
  21. in this type of reaction, positive ions of both compound switch places
  22. the measure of how much solute can dissolve in a solvent at a given temperature
  23. all the atoms of each element reacting in a chemical equation must ___ the number of atoms that are being produced.
  24. when determining if something will dissolve something else it is helpful to remember the phrase “___ ____ ____”
  25. Material made up of 2 or more substances that can be separated by physical means
Down
  1. the Law of ___ __ ___ states matter cannot be created nor destroyed, only changed
  2. a mixture that is the same throughout
  3. this number in front of a compound in a chemical equation tells you how many molecules of that compound there are
  4. the arrow in a chemical equation means this word
  5. adding water or another solvent to a solution will ____ the mixture and could slow down the reaction
  6. the things that are produced in a chemical reaction
  7. long chains of molecules made of repeating units called monomers - examples are plastics and wool
  8. a chemical ___ shows the number of chemicals and how they react to form now substances
  9. the amount of __ in a given volume is concentration
  10. these/this is any compound that is reacting, it is on the left side of the arrow in a chemical equation
  11. ___ energy is the minimum amount of energy needed for a reaction to take place
  12. in this type of reaction, one substance changes places with another
  13. you can put chemical inhibitors called ___ onto food to keep them from decaying
  14. a solid may form when 2 liquids react, it is called this, a ___
  15. type of reaction that gives off energy
  16. a ___ change occurs when a new substance is created
  17. material made by humans and are not natural are called __________
  18. in this type of reaction, one complex compound will break down into simpler ones
  19. crushing or breaking something up will increase the __ __ of the substance and allow more surfaces for the reaction to take place
  20. a compound that speeds up a chemical reaction without itself being consumed
  21. separating a mixture by heating so that the part that has a lower boiling point will evaporate first, then it is collected while the gas cools and condenses
  22. the scattering of light as it passes through a colloid is called the ___ __
  23. if a solution is __________ then contains all the solute it can at a given temp
  24. type of reaction that absorbs energy as it happens

49 Clues: what gets dissolved in a solution • a mixture that is the same throughout • what does the dissolving In a solution • type of reaction that gives off energy • a mixture that you can see the separate parts • the arrow in a chemical equation means this word • type of reaction that absorbs energy as it happens • the things that are produced in a chemical reaction • ...

8th grade topic 9 Chemical Reactions 2024-12-08

8th grade topic 9 Chemical Reactions crossword puzzle
Across
  1. a mixture where particles can be seen and separated by settling or filtration.
  2. a solid may form when 2 liquids react, it is called this, a ___
  3. this number in front of a compound in a chemical equation tells you how many molecules of that compound there are
  4. in this type of chemical reaction system, the environment can influence the reaction, or matter can enter and escape from the reaction
  5. the things that are produced in a chemical reaction
  6. this small number following an element’s symbol in a chemical equation tells you how many atoms of that element are present in the reaction
  7. if a solution is __________ then contains all the solute it can at a given temp
  8. material made by humans and are not natural are called __________
  9. a compound that prevents or slows down a chemical reaction
  10. these are catalysts in our body that speed up chemical reactions
  11. a mixture that is the same throughout
  12. adding water or another solvent to a solution will ____ the mixture and could slow down the reaction
  13. you can put chemical inhibitors called ___ onto food to keep them from decaying
  14. what gets dissolved in a solution
  15. a ___ change occurs when a new substance is created
  16. what does the dissolving In a solution
  17. a chemical ___ shows the number of chemicals and how they react to form now substances
  18. a ___ change is one in which the appearance of the matter changes, it does not change what it is
  19. if a solution is _________ then it is able to dissolve more solute at a given temp
  20. ___ energy is the minimum amount of energy needed for a reaction to take place
  21. a mixture containing small undissolved particles that do not settle out- they may be too small to see, but they can scatter light.
  22. in this type of reaction, positive ions of both compound switch places
  23. these are examples of synthetic foods- they are added too food to make them last longer
  24. if chemicals change ___, it may indicate a chemical reaction has taken place
Down
  1. in this type of reaction, one substance changes places with another
  2. a compound that speeds up a chemical reaction without itself being consumed
  3. long chains of molecules made of repeating units called monomers - examples are plastics and wool
  4. type of reaction that gives off energy
  5. these/this is any compound that is reacting, it is on the left side of the arrow in a chemical equation
  6. the arrow in a chemical equation means this word
  7. when determining if something will dissolve something else it is helpful to remember the phrase “___ ____ ____”
  8. the scattering of light as it passes through a colloid is called the ___ __
  9. a chemical reaction occurs when existing chemical ___ are broken and new ones may be made
  10. salt and water are considered ___ ___ because they have fixed chemical compositions
  11. in this type of reaction system, the reaction is contained, matter cannot enter or exit
  12. type of reaction that absorbs energy as it happens
  13. this type of reaction takes simple things and combines them to make them more complex
  14. increasing this will cause particles to move faster and will increase the reaction rate, lowering it will decrease the rate
  15. the Law of ___ __ ___ states matter cannot be created nor destroyed, only changed
  16. crushing or breaking something up will increase the __ __ of the substance and allow more surfaces for the reaction to take place
  17. separating a mixture by heating so that the part that has a lower boiling point will evaporate first, then it is collected while the gas cools and condenses
  18. if a solution is _______ then it contains more solute than a saturated one. Solution is unstable and may form crystals
  19. if this (tiny bubbles) are produced during a reaction, it may indicate a chemical reaction
  20. Material made up of 2 or more substances that can be separated by physical means
  21. the amount of __ in a given volume is concentration
  22. the measure of how much solute can dissolve in a solvent at a given temperature
  23. in this type of reaction, one complex compound will break down into simpler ones
  24. all the atoms of each element reacting in a chemical equation must ___ the number of atoms that are being produced.
  25. a mixture that you can see the separate parts

49 Clues: what gets dissolved in a solution • a mixture that is the same throughout • type of reaction that gives off energy • what does the dissolving In a solution • a mixture that you can see the separate parts • the arrow in a chemical equation means this word • type of reaction that absorbs energy as it happens • the things that are produced in a chemical reaction • ...

Physical Science Review 2025-02-25

Physical Science Review crossword puzzle
Across
  1. an atom that has gained electrons, a negative nonmetal ion
  2. a chemical reaction that has the same number and kinds of elements in both the product and reactant
  3. majority of elements on the periodic table. Tend to lose electrons and form positive ions
  4. chemical reaction with ONE PRODUCT A + B --> AB
  5. number in front of a formula used to balance the reaction
  6. an atom that has lost electrons, a positive metal ion
  7. lowest ratio of ions in an ionic compound
  8. neutral particle in the nucleus of an atom
  9. bond formed when a metal atom gives an electron to a nonmetal atom
  10. chemical reaction between an organic compound and oxygen CHO
  11. bond formed when two or more nonmetal atoms share electrons
  12. atoms of the same element with different numbers of neutrons
  13. ___ replacement, chemical reaction between two ionic compounds AB + CD --> AD + CB
  14. elements that tend to gain electrons and form negative ions
Down
  1. chemicals that are used in a reaction
  2. positive particle in the nucleus of an atom
  3. negative particle in the space outside the nucleus of an atom
  4. electrons in the outermost energy level that participate in bonding
  5. chemical reaction with ONE REACTANT AB --> A +B
  6. an atom that has gained or lost one or more electrons
  7. carbon compounds with the same chemical formula but different molecular shapes
  8. elements that have full valence shells. Group 18
  9. chemicals that are formed in a reaction
  10. ___ replacement, chemical reaction between a compound and a SINGLE ELEMENT AB + C --> AC + B
  11. particle formed by covalent compounds

25 Clues: chemicals that are used in a reaction • particle formed by covalent compounds • chemicals that are formed in a reaction • lowest ratio of ions in an ionic compound • neutral particle in the nucleus of an atom • positive particle in the nucleus of an atom • chemical reaction with ONE PRODUCT A + B --> AB • chemical reaction with ONE REACTANT AB --> A +B • ...

Law of Conservation of Mass Vocabulary 2022-10-14

Law of Conservation of Mass Vocabulary crossword puzzle
Across
  1. a representation of a chemical reaction that uses symbols to show the relationship between the reactants and the products
  2. substance formed by the chemical combination of two or more elements in definite proportions
  3. substance formed by the chemical combination of two or more elements in definite proportions
  4. the process by which one or more substances change to produce ono e more different substances
  5. a chemical bond resulting from the attraction between oppositely charged ions
  6. a chemical reaction where two elements in different compounds trade places
  7. a substance produced in a chemical reaction
  8. a chemical substance that is present at the start of a chemical reaction
  9. a chemical bond formed when two atoms share electrons
  10. a reaction in which two or more substances combine to form a new compound
  11. compound that is composed of two elements
  12. a reaction in which a single compound breaks down to form two or more simpler substances
Down
  1. chemical equation with the same number of atoms of each element on both sides of the equation
  2. matter is not created or destroyed in any chemical or physical change or reaction
  3. positive or negative number that indicates how many electrons an atom has gained, lost, or shared to become stable
  4. a solid that forms from a solution during a chemical reaction
  5. a chemical change in which a substance combines with oxygen, as when iron oxidizes, forming rust

17 Clues: compound that is composed of two elements • a substance produced in a chemical reaction • a chemical bond formed when two atoms share electrons • a solid that forms from a solution during a chemical reaction • a chemical substance that is present at the start of a chemical reaction • a reaction in which two or more substances combine to form a new compound • ...

Chemical Puzzle 2022-06-19

Chemical Puzzle crossword puzzle
Across
  1. A solution in which the solvent is water
  2. A solid that is formed during a chemical reaction in a solution
  3. Result of a chemical reaction, on the right of a chemical equation
  4. Dissolves a solute, creating a reaction
  5. A type of reaction where a compound breaks down into elements or simpler compounds
  6. A chemical reaction where two or more compounds come together to produce one bigger compound
  7. Unit of measurement used by chemists
Down
  1. The number of atoms present in an molecule or a formula unit
  2. The smallest particle of a substance that has all of the physical and chemical properties of that substance
  3. Elements found on the left side of a chemical equation
  4. studies substances in an element
  5. Indicates the number of each substance in a chemical reaction
  6. Seperates the reactants and products in a chemical equation
  7. Reaction A reaction involving the emition of heat
  8. Dissolved in the solvent

15 Clues: Dissolved in the solvent • studies substances in an element • Unit of measurement used by chemists • Dissolves a solute, creating a reaction • A solution in which the solvent is water • Reaction A reaction involving the emition of heat • Elements found on the left side of a chemical equation • Seperates the reactants and products in a chemical equation • ...

Signs of a chemical reaction 2013-03-09

Signs of a chemical reaction crossword puzzle
Across
  1. A sign of a chemical reaction when magnesium ribbon is burned.
  2. the new substance(s) formed during a chemical reaction is called a _________________.
  3. These are required at the start of a chemical reaction.
  4. A sign of a chemical reaction observed watching fireworks
  5. The word used in chemistry to describe the formation of a gas during a chemical reaction (fizzing).
  6. Sometimes the sign of a chemical reaction that can escape into the air when formed
  7. An everyday chemical reaction happening in the school canteen at lunch time
Down
  1. A _____________ change is observed when toasting bread.
  2. The place a chemical reaction is happening in your phone.
  3. A chemical reaction that is done by plants and requires light energy from the sun.
  4. The sign of a chemical reaction requiring olfactory receptors in your nose.
  5. Chemical, light, sound, heat are examples of this that can be observed changing during chemical reaction.
  6. An everyday chemical reaction that happens to iron when exposed to water and oxygen

13 Clues: A _____________ change is observed when toasting bread. • These are required at the start of a chemical reaction. • The place a chemical reaction is happening in your phone. • A sign of a chemical reaction observed watching fireworks • A sign of a chemical reaction when magnesium ribbon is burned. • ...

ch. 19 Chemical reactions 2023-04-26

ch. 19 Chemical reactions crossword puzzle
Across
  1. thermal energy must be absorbed in this chemical reaction
  2. means that there are equal numbers of all atoms on both sides of an equation
  3. the substances produced during a chemical reaction
  4. a substance added to a reaction to increase the reaction rate
  5. a chemical sentence used to describe a chemical reaction
  6. this occurs when one substance break down into 2 or more substances
  7. when one or more substances react to form new substances
  8. the combination of two or more substances
Down
  1. indicate the number of units of a substance needed for the reaction
  2. thermal energy is released during this chemical reaction
  3. occurs when a substance reacts with oxygen to form carbon dioxide and water
  4. occurs when two or more reactants join to form one prodcut
  5. a substance added to a reaction to decrease the rate of reaction
  6. a pure substance made up of atoms
  7. the starting substances in a chemical reaction

15 Clues: a pure substance made up of atoms • the combination of two or more substances • the starting substances in a chemical reaction • the substances produced during a chemical reaction • a chemical sentence used to describe a chemical reaction • when one or more substances react to form new substances • thermal energy is released during this chemical reaction • ...

Chemical Reactions and The Law of Conservation of Mass 2025-05-08

Chemical Reactions and The Law of Conservation of Mass crossword puzzle
Across
  1. A chemical equation where the number of atoms is the same on both sides.
  2. The starting materials in a chemical reaction.
  3. The number placed in front of a compound in a chemical equation.
  4. A reaction where one element replaces another in a compound.
  5. A reaction that gives off heat.
  6. A solid that forms and settles out in a chemical reaction.
  7. A reaction that takes in heat.
  8. A process where an element loses electrons.
  9. The new substances formed after a chemical reaction.
Down
  1. A reaction where parts of two compounds switch places.
  2. Mass is never lost or gained in a chemical reaction.
  3. A process where an element gains electrons.
  4. A reaction where two or more things combine to make something new.
  5. A reaction where a compound breaks down into simpler parts.
  6. A reaction where something burns, usually with oxygen.

15 Clues: A reaction that takes in heat. • A reaction that gives off heat. • A process where an element gains electrons. • A process where an element loses electrons. • The starting materials in a chemical reaction. • Mass is never lost or gained in a chemical reaction. • The new substances formed after a chemical reaction. • ...

Rosy De La Roca:Chemistry Per.4 2017-02-27

Rosy De La Roca:Chemistry Per.4 crossword puzzle
Across
  1. amount of product obtained in a chemical reaction
  2. a constant term related to the properties of a product.
  3. state or process of rotting;decay
  4. element reacts with a compound and takes the place of another element in that compound
  5. symbolic representation of a chemical reaction in the form of symbols and formulae,
  6. 2 atoms
  7. appending (aq) to the relevant chemical formula
  8. Compound chemical compound that contains exactly two different elements.
  9. reaction that involves the gaining of electrons.
  10. insoluble solid that emerges from a liquid solution.
Down
  1. combination or composition, i
  2. chemical decomposition produced by passing an electric current through a liquid or solution containing ions
  3. hydrocarbon reacts with oxygen to produce carbon dioxide and water
  4. substance takes part in and undergoes change during reaction
  5. two compounds react
  6. charged chemical species
  7. process or result of oxidizing or being oxidized.
  8. substance that speeds up a chemical reaction

18 Clues: 2 atoms • two compounds react • charged chemical species • combination or composition, i • state or process of rotting;decay • substance that speeds up a chemical reaction • appending (aq) to the relevant chemical formula • reaction that involves the gaining of electrons. • amount of product obtained in a chemical reaction • process or result of oxidizing or being oxidized. • ...

Chemical reactions and equations crossword puzzle ARYAN SHARMA 10-R 2024-05-06

Chemical reactions and equations crossword puzzle ARYAN SHARMA 10-R crossword puzzle
Across
  1. The substance that is formed as a result of a chemical reaction.
  2. The type of chemical reaction in which heat is given out.
  3. The process of breaking down a compound into simpler substances by heating it.
  4. MgO
  5. A substance that speeds up the rate of a chemical reaction without itself undergoing any permanent chemical change.
  6. reactions in which insoluble salts are formed
  7. A chemical equation in which the number of atoms of each element is the same on both sides of the equation.
Down
  1. often called as limestone , marble , chalk
  2. When two or more substances combine to form a single product
  3. A chemical reaction in which a more reactive element displaces a less reactive element from its compound.
  4. The type of chemical reaction in which a single compound breaks down into two or more simpler substances.
  5. The type of chemical reaction in which energy is absorbed.
  6. Gain of oxygen , loss of hydrogen and electron
  7. The type of chemical reaction in which two compounds exchange ions to form two new compounds.
  8. When a metal is attacked by substances around it such as moisture , acids present in atmosphere
  9. The substance that undergoes a chemical change in a reaction.

16 Clues: MgO • often called as limestone , marble , chalk • reactions in which insoluble salts are formed • Gain of oxygen , loss of hydrogen and electron • The type of chemical reaction in which heat is given out. • The type of chemical reaction in which energy is absorbed. • When two or more substances combine to form a single product • ...

Law of Conservation of Mass 2021-09-20

Law of Conservation of Mass crossword puzzle
Across
  1. an ARROW to show the DIRECTION of a chemical reaction
  2. a number in FRONT of a chemical symbol or chemical formula
  3. a group of atoms bonded together
  4. a substance at the BEGINNING of a chemical reaction
  5. a substance formed as the RESULT of a chemical reaction
  6. a measure of the amount of matter in an object
  7. mass is neither created nor destroyed in a chemical reaction
  8. a chemical change that forms new substances
Down
  1. a shortened version of an element's name
  2. a model of a chemical reaction
  3. the ability of an atom or molecule to undergo a chemical reaction
  4. a notation to show the number of atoms in a molecule
  5. a substance of TWO or more chemical elements chemically combined
  6. the number FOLLOWING the chemical symbol
  7. anything that occupies space and has mass

15 Clues: a model of a chemical reaction • a group of atoms bonded together • a shortened version of an element's name • the number FOLLOWING the chemical symbol • anything that occupies space and has mass • a chemical change that forms new substances • a measure of the amount of matter in an object • a substance at the BEGINNING of a chemical reaction • ...

Science Vocabulary 2013-04-11

Science Vocabulary crossword puzzle
Across
  1. a way to describe a chemical reaction using chemical formulas and other symbols
  2. the substances that react
  3. a substance that speeds up a chemical reaction without changing itself
  4. when one element replaces another in a compound
  5. when two or more substances combine to form a new substance
Down
  1. when a substance reacts with oxygen to produce energy in the form of heat and light
  2. the balancing process that involves changing coefficients in a reaction
  3. the minimum amount of energy needed to start a reaction
  4. when the positive ion of one compound replaces that of another compound to form two new compounds
  5. when one substance breaks down into another substance
  6. the new substances produced
  7. when energy is given off as heat
  8. the speed at which reactants are consumed and products are given
  9. substances used to slow a chemical reaction
  10. Reaction when energy is needed in the form of heat

15 Clues: the substances that react • the new substances produced • when energy is given off as heat • substances used to slow a chemical reaction • when one element replaces another in a compound • Reaction when energy is needed in the form of heat • when one substance breaks down into another substance • the minimum amount of energy needed to start a reaction • ...

Year 9 Semester 2 Exam Revision 2019-10-20

Year 9 Semester 2 Exam Revision crossword puzzle
Across
  1. Chemicals produced in a chemical reaction
  2. The bending of light as it passes from one substance to another
  3. A chemical reaction that releases heat energy
  4. Heat transfer through the vibration of particles
  5. Heat transfer in a liquid or gas when warmer, less dense particles rise
  6. A lens that bulges outwards
  7. Living factors in an ecosystem
  8. A diagram that represents energy at each level of a food chain
  9. Tablets or liquid that neutralises stomach acid
  10. A chemical equation that has the same number of each type of atom on both sides of the arrow
  11. A simple written description of a chemical reaction
  12. The plant organelle where photosynthesis takes place
  13. The distance from one peal of a wave to the next
  14. Rain that has acids such as nitric acid in it
  15. A reaction between metals and other chemicals
Down
  1. A lens that curves inwards
  2. The number of waves passing a point every second
  3. Chemicals that take part in a chemical reaction
  4. Light bouncing off something
  5. The unit used to measure loudness
  6. A chemical reaction that absorbs heat energy
  7. A series of chemical reactions that release energy from glucose
  8. The big number in front of a chemical symbol in an equation
  9. A reaction of an acid with a base, forming salt and water
  10. A reaction with oxygen that releases heat energy
  11. The green chemical in the chloroplasts of plants
  12. A simple sugar that provides energy to organisms
  13. A material that doesn't conduct heat very well
  14. A non-living factor in an ecosystem
  15. Connected food chains

30 Clues: Connected food chains • A lens that curves inwards • A lens that bulges outwards • Light bouncing off something • Living factors in an ecosystem • The unit used to measure loudness • A non-living factor in an ecosystem • Chemicals produced in a chemical reaction • A chemical reaction that absorbs heat energy • A chemical reaction that releases heat energy • ...

What's the Matter? 2022-03-22

What's the Matter? crossword puzzle
Across
  1. a characteristic of a substance that describes its ability to change into other substances
  2. a characteristic of a substance that can be observed without changing the substance into another substance
  3. A rapid reaction between oxygen and fuel that results in fire
  4. A material that releases energy when burned
  5. a solid that forms from solution during a chemical reaction
  6. a short and easy way to show a chemical reaction, using symbols instead of words
  7. a reaction in which energy is absorbed
  8. A number in front of a chemical formula in an equation that indicates how may molecules or atoms of each reactant and product are involved in a reaction
  9. the study of matter and how matter changes
  10. A system in which matter can enter or escape to the surroundings
  11. A material that increases the rate of a reaction by lowering the activation energy
  12. anything that has mass and takes up space
  13. any change that that alters the form or appearance of a substance but that does not make the substance into another substance
  14. a change in matter that produces one or more new substances
  15. A chemical reaction in which two or more simpler substances combine to form a new, more complex substance
  16. during a chemical reaction, matter is not created or destroyed. All atoms present at the start if the reaction are present in the end.
  17. A material that decreases the rate of a reaction
Down
  1. A system in which no matter is allowed to enter or leave
  2. A reaction that releases energy in the form of heat
  3. A biological catalyst that lowers the activation energy an electron has
  4. The amount of one material ina certain volume of another material
  5. new substance when the reaction is complete
  6. The minimum amount of energy needed to get a chemical reaction started
  7. the substance you have at the beginning
  8. A reaction in which one element replaces another in a compound or when two elements in different compounds trade place
  9. A chemical reaction that breaks down compounds into simpler products

26 Clues: a reaction in which energy is absorbed • the substance you have at the beginning • anything that has mass and takes up space • the study of matter and how matter changes • A material that releases energy when burned • new substance when the reaction is complete • A material that decreases the rate of a reaction • A reaction that releases energy in the form of heat • ...

Atoms to Compounds 2024-09-03

Atoms to Compounds crossword puzzle
Across
  1. The ____ gases are the last group of elements of the periodic table, known for being unreactive
  2. Atoms of the same element with different numbers of neutrons
  3. The process of preparing food by applying heat, causing chemical changes
  4. The chemical ____ is a symbolic representation of a chemical reaction using chemical formulas
  5. The mass ___ is the total number of protons and neutrons in an atom's nucleus
  6. Elements that are shiny, conductive, and can be shaped
  7. A gas that makes up about 78% of the Earth's atmosphere
  8. A _____ change alters the form or appearance of a substance without forming a new substance
  9. Change of ____ is a transition of a substance from one form (e.g. liquid) to another by adding or removing heat
  10. A chemical reaction involving oxygen that produces heat and light
  11. A slow chemical change that occurs iron reacts with oxygen and water
  12. A group of atoms bonded together
  13. A gas essential for respiration and combustion
  14. A vertical column in the periodic table with elements that have similar properties
  15. An ______ reaction is a chemical reaction that releases energy, usually as heat
  16. A horizontal row in the periodic table
  17. An atom that has gained or lost electrons, becoming charged
  18. A shiny, grey metal that burns with a bright white flame
  19. A property of a substance that can change during a chemical reaction
  20. Hydrogen ____ is a compound that can be broken down into two gases through a chemical reaction
  21. A substance that undergoes change in a chemical reaction
  22. The central part of an atom, containing protons and neutrons
  23. The smallest unit of matter which cannot be split
Down
  1. The chemical ____ is a representation of a compound showing the elements and their ratios
  2. The ___ number is the number of protons in the nucleus of an atom
  3. An ______ reaction is a chemical reaction that absorbs energy, usually in the form of heat
  4. A _____ change creates a new substance by breaking current bonds and forming new ones
  5. Elements that are typically dull and poor conductors
  6. A substance formed as a result of a chemical reaction
  7. The atomic ___ is the average mass of an atom, based on the mass of protons, neutrons, and electrons
  8. A positively charged particle in the nucleus of an atom
  9. A negatively charged particle orbiting the nucleus of an atom
  10. A chemical ____ is a one- or two-letter representation of an element
  11. A pure substance made of only one type of atom
  12. A substance that could be produced by a chemical reaction and cause bubbles
  13. The _____ table shows all known elements arranged by atomic number
  14. The ___ equation is a way to represent a chemical reaction using words instead of symbols
  15. A reddish-brown metal that does not easily burn
  16. A substance made of two or more different elements chemically bonded
  17. A neutral particle found in the nucleus of an atom
  18. Elements with properties between those of metals and nonmetals
  19. A smell produced by a substance, often a sign of a chemical change

42 Clues: A group of atoms bonded together • A horizontal row in the periodic table • A gas essential for respiration and combustion • A pure substance made of only one type of atom • A reddish-brown metal that does not easily burn • The smallest unit of matter which cannot be split • A neutral particle found in the nucleus of an atom • ...

Unit 5 Vocab Review 2026-01-22

Unit 5 Vocab Review crossword puzzle
Across
  1. A type of nuclear reaction where the type of element changes
  2. An abbreviation for the type of reaction involving a transfer of one or more electrons
  3. When an atom gains one or more electrons
  4. A substance that is a product of a first step then a reactant in a second step
  5. The speed at which a chemical reaction occurs
  6. A reaction occurring in a single step
  7. Reactant for this type of reaction includes one compound
  8. The minimum energy required to start a chemical reaction
  9. A nuclear reaction where multiple atoms combine into a larger atom
  10. A type of reaction where protons or neutrons are changed
  11. A type of reaction where hydrogen is transferred
  12. Reactants for this type of reaction include oxygen gas and one other element or compound
  13. Reactants for this type of reaction include two elements
Down
  1. The list of steps required for a multi-step reaction
  2. Representation of a reaction using formulas and symbols
  3. Speeds up a reaction but it not used up during a reaction
  4. Shows the heat involved in a reaction in addition to reactants and products
  5. A solid formed as a product of a chemical reaction
  6. A chemical equation that has the same number of atoms of each type on both reactant and product side
  7. Reactants for this type of reaction include two compounds
  8. A nuclear reaction where an atom splits into smaller, more stable pieces
  9. Reactants for this type of reaction includes one element and one compound
  10. When an atom loses one or more electrons
  11. The state of a reversible reaction when the rate of the forward reaction is equal to the rate of the reverse reaction
  12. This blocks the action of a catalyst

25 Clues: This blocks the action of a catalyst • A reaction occurring in a single step • When an atom gains one or more electrons • When an atom loses one or more electrons • The speed at which a chemical reaction occurs • A type of reaction where hydrogen is transferred • A solid formed as a product of a chemical reaction • The list of steps required for a multi-step reaction • ...

Chemical Reactions Vocab 2023-03-09

Chemical Reactions Vocab crossword puzzle
Across
  1. a representation of a chemical reaction in which reactants and products are expressed as formulas
  2. a reaction in which one element take the place of an other element in a compound (A + BC --> AC + B)
  3. a reaction in which 2 more more substances react to form a single substance (A + B --> AB)
  4. a reaction in which the conversion of reactants into products and the conversion of products into reactants can happen simultaneously
  5. a state in which the forward and reverse paths of change take place at the same rate
  6. the rate at which reactants change into reactants change into products
  7. a reaction in which electrons are transferred from one reactant to another
  8. a chemical reaction that releases energy into its surroundings
  9. The numbers that appear before a formula in a chemical equation to show the relative proportions of each reactant to the product
Down
  1. the new substances that are formed as a result of a chemical reaction
  2. the energy stored in the chemical bonds of a substance
  3. a reaction in which a substance reacts rapidly with oxygen, often producing heat and light
  4. a chemical reaction that absorbs energy from its surroundings
  5. a reaction in which two different compounds exchange positive ions and form 2 new compounds(AB + CD --> AD + BC)
  6. a reaction in which a compound breaks down into two or more simpler substances (AB --> A + B)
  7. a substance that affects the reaction rate without being used in the reaction
  8. the substances that undergo change in a chemical reaction (the starting materials of a reaction)

17 Clues: the energy stored in the chemical bonds of a substance • a chemical reaction that absorbs energy from its surroundings • a chemical reaction that releases energy into its surroundings • the new substances that are formed as a result of a chemical reaction • the rate at which reactants change into reactants change into products • ...

Everyday Reactions 2013-12-01

Everyday Reactions crossword puzzle
Across
  1. Ice melting is a ____________ reaction.
  2. A type of reduction reaction using heat.
  3. The addition of oxygen to a compound is called an ___________ reaction.
  4. A piece of equipment used to heat a substance.
  5. Hydrogen and carbon dioxide are both ________.
  6. All metals react with oxygen, and this is called _________.
  7. A type of reaction where heat is give out.
  8. The name of the element Fe.
  9. The name of the element Mg.
  10. A compound that contains hydrogen and oxygen.
  11. When everything in a reaction has reacted, you are left with the ____________.
  12. The most important element in air is __________.
Down
  1. The way in which iron is extracted from iron ore.
  2. In a chemical reaction the substances you start with are called ____________.
  3. Burning paper is a ___________ reaction.
  4. A type of reaction where heat is absorbed.
  5. A type of reaction in the body that changes food (fuel) into energy, water and carbon dioxide.
  6. The chemical formula for carbon dioxide.
  7. The chemical formula for water
  8. The removal of oxygen from a compound is called a __________ reaction.
  9. Oxygen and water are required for this reaction and salt speeds it up.
  10. Oxygen, heat source and fuel are required for this reaction.
  11. These are found in the periodic table.

23 Clues: The name of the element Fe. • The name of the element Mg. • The chemical formula for water • These are found in the periodic table. • Ice melting is a ____________ reaction. • Burning paper is a ___________ reaction. • A type of reduction reaction using heat. • The chemical formula for carbon dioxide. • A type of reaction where heat is absorbed. • ...

Perfect 1o 2018-02-21

Perfect 1o crossword puzzle
Across
  1. - A material that increases the rate of a reaction by lowering the activation energy
  2. Reaction - A reaction that releases energy in the form of heat
  3. - a substance that takes part in and undergoes change during a reaction.
  4. - A chemical reaction that breaks down compounds into simpler products
  5. - A solid that forms from a solution during a chemical reaction
  6. Reaction - A reaction that absorbs energy in the form of heat.
  7. Energy - The minimum amount of energy needed to get a chemical reaction started
Down
  1. - A chemical reaction in which two or more simple substances combine to form a new, more complex substance
  2. - A substance that is formed as result of chemical reaction
  3. Reaction - a process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction.
  4. - A reaction in which one element replaces another in a compound or when two elements in different compounds trade places
  5. system - A system in which matter can enter from or escape to surroundings
  6. - Coefficient: A number in front of a chemical formula in an equation that indicates how many molecules or atoms of each reactant and product are involved in a reaction.
  7. - A material that decreases the rate of reaction
  8. of Mass - The principle stating that matter is not created or destroyed during a chemical reaction

15 Clues: - A material that decreases the rate of reaction • - A substance that is formed as result of chemical reaction • Reaction - A reaction that releases energy in the form of heat • Reaction - A reaction that absorbs energy in the form of heat. • - A solid that forms from a solution during a chemical reaction • ...

Chemical Puzzle 2022-06-19

Chemical Puzzle crossword puzzle
Across
  1. A solution in which the solvent is water
  2. A solid that is formed during a chemical reaction in a solution
  3. Result of a chemical reaction, on the right of a chemical equation
  4. Dissolves a solute, creating a reaction
  5. A type of reaction where a compound breaks down into elements or simpler compounds
  6. A chemical reaction where two or more compounds come together to produce one bigger compound
  7. Unit of measurement used by chemists
Down
  1. The number of atoms present in an molecule or a formula unit
  2. The smallest particle of a substance that has all of the physical and chemical properties of that substance
  3. Elements found on the left side of a chemical equation
  4. studies substances in an element
  5. Indicates the number of each substance in a chemical reaction
  6. Seperates the reactants and products in a chemical equation
  7. Reaction A reaction involving the emition of heat
  8. Dissolved in the solvent

15 Clues: Dissolved in the solvent • studies substances in an element • Unit of measurement used by chemists • Dissolves a solute, creating a reaction • A solution in which the solvent is water • Reaction A reaction involving the emition of heat • Elements found on the left side of a chemical equation • Seperates the reactants and products in a chemical equation • ...

Chemical Puzzle 2022-06-19

Chemical Puzzle crossword puzzle
Across
  1. A solution in which the solvent is water
  2. A solid that is formed during a chemical reaction in a solution
  3. Result of a chemical reaction, on the right of a chemical equation
  4. Dissolves a solute, creating a reaction
  5. A type of reaction where a compound breaks down into elements or simpler compounds
  6. A chemical reaction where two or more compounds come together to produce one bigger compound
  7. Unit of measurement used by chemists
Down
  1. The number of atoms present in an molecule or a formula unit
  2. The smallest particle of a substance that has all of the physical and chemical properties of that substance
  3. Elements found on the left side of a chemical equation
  4. studies substances in an element
  5. Indicates the number of each substance in a chemical reaction
  6. Seperates the reactants and products in a chemical equation
  7. Reaction A reaction involving the emition of heat
  8. Dissolved in the solvent

15 Clues: Dissolved in the solvent • studies substances in an element • Unit of measurement used by chemists • Dissolves a solute, creating a reaction • A solution in which the solvent is water • Reaction A reaction involving the emition of heat • Elements found on the left side of a chemical equation • Seperates the reactants and products in a chemical equation • ...

Chemistry 2013-07-04

Chemistry crossword puzzle
Across
  1. A way of expressing information about chemical elements when put together
  2. rate How fast or slow a chemical recation happens
  3. A subtance that causes catalysis
  4. The end result of a chemical reaction
  5. Breaking down
  6. Speed up reaction rate
  7. Material properties that becomes evident in a chemical reaction
  8. A short way to say/identify and element
  9. Can be boiled or frozen
  10. area Total area of the faces and curved faces of a solid figure
  11. Also known as steam
Down
  1. Pure substance
  2. To the left side in a chemical reaction
  3. The smallest piece of a substance that is a substance
  4. A state that is not liquid or gas
  5. Burning of 2 chemical
  6. Where substances arent bonded and no new substances are made
  7. Hydrogen, carbon etc.
  8. A group of atoms that have joined together
  9. table List of all known elements
  10. Element, compound or alloy that is a good conductor of electricity and heat

21 Clues: Breaking down • Pure substance • Also known as steam • Burning of 2 chemical • Hydrogen, carbon etc. • Speed up reaction rate • Can be boiled or frozen • A subtance that causes catalysis • table List of all known elements • A state that is not liquid or gas • The end result of a chemical reaction • To the left side in a chemical reaction • A short way to say/identify and element • ...

Chemical Puzzle 2022-06-19

Chemical Puzzle crossword puzzle
Across
  1. A solution in which the solvent is water
  2. A solid that is formed during a chemical reaction in a solution
  3. Result of a chemical reaction, on the right of a chemical equation
  4. Dissolves a solute, creating a reaction
  5. A type of reaction where a compound breaks down into elements or simpler compounds
  6. A chemical reaction where two or more compounds come together to produce one bigger compound
  7. Unit of measurement used by chemists
Down
  1. The number of atoms present in an molecule or a formula unit
  2. The smallest particle of a substance that has all of the physical and chemical properties of that substance
  3. Elements found on the left side of a chemical equation
  4. studies substances in an element
  5. Indicates the number of each substance in a chemical reaction
  6. Seperates the reactants and products in a chemical equation
  7. Reaction A reaction involving the emition of heat
  8. Dissolved in the solvent

15 Clues: Dissolved in the solvent • studies substances in an element • Unit of measurement used by chemists • Dissolves a solute, creating a reaction • A solution in which the solvent is water • Reaction A reaction involving the emition of heat • Elements found on the left side of a chemical equation • Seperates the reactants and products in a chemical equation • ...

Chemical Puzzle 2022-06-19

Chemical Puzzle crossword puzzle
Across
  1. A solution in which the solvent is water
  2. A solid that is formed during a chemical reaction in a solution
  3. Result of a chemical reaction, on the right of a chemical equation
  4. Dissolves a solute, creating a reaction
  5. A type of reaction where a compound breaks down into elements or simpler compounds
  6. A chemical reaction where two or more compounds come together to produce one bigger compound
  7. Unit of measurement used by chemists
Down
  1. The number of atoms present in an molecule or a formula unit
  2. The smallest particle of a substance that has all of the physical and chemical properties of that substance
  3. Elements found on the left side of a chemical equation
  4. studies substances in an element
  5. Indicates the number of each substance in a chemical reaction
  6. Seperates the reactants and products in a chemical equation
  7. Reaction A reaction involving the emition of heat
  8. Dissolved in the solvent

15 Clues: Dissolved in the solvent • studies substances in an element • Unit of measurement used by chemists • Dissolves a solute, creating a reaction • A solution in which the solvent is water • Reaction A reaction involving the emition of heat • Elements found on the left side of a chemical equation • Seperates the reactants and products in a chemical equation • ...

Chemical Kinetics/Reactions 2025-07-08

Chemical Kinetics/Reactions crossword puzzle
Across
  1. Operates in closed system with time-dependent behavior
  2. Lowers activation barrier without altering equilibrium
  3. Sequence of steps in a chemical reaction
  4. Study of reaction rates and mechanisms
  5. Slowest step controlling overall reaction rate
  6. High-energy state during a chemical reaction
  7. Ideal reactor with uniform composition throughout
  8. Proportionality factor in the rate law
  9. Movement of molecules from high to low concentration
  10. Approximation used in enzyme kinetics
  11. no axial mixing; concentration varies along length
  12. Assumption used to simplify complex reaction mechanisms
Down
  1. Study of energy changes in chemical processes
  2. Involves initiation, propagation, and termination steps
  3. Explains reaction rates via molecular encounters
  4. Describes temperature dependence of rate constants
  5. Empirical expression derived from experimental data
  6. Minimum energy required for a reaction to occur
  7. Species formed and consumed during a reaction mechanism
  8. Exponent of concentration in the rate law
  9. A single step in a reaction mechanism
  10. Constant temperature reactor operation

22 Clues: A single step in a reaction mechanism • Approximation used in enzyme kinetics • Study of reaction rates and mechanisms • Proportionality factor in the rate law • Constant temperature reactor operation • Sequence of steps in a chemical reaction • Exponent of concentration in the rate law • High-energy state during a chemical reaction • ...

Chapter 6 and 7 vocab 2023-11-02

Chapter 6 and 7 vocab crossword puzzle
Across
  1. dot diagram - a diagram of an atom, ion or molecule in which each dot represents a valence electron
  2. - a substance that undergoes change in a chemical reaction
  3. reaction - a chemical reaction in which one element takes the place of another element in a compound
  4. bond - the force that holds atoms or ions together as a unit
  5. energy - the energy stored in chemical bonds
  6. bond - the force that holds cations and anions together
  7. bond - the attraction between a metal cation and the shared electrons that surround it
  8. - an atom or group of atoms that has a positive or negative charge
  9. - new substances formed as a result of a chemical reaction
Down
  1. reaction - a chemical reaction in which two compounds exchange positive ions and form new compounds
  2. formula - notation that shows what elements a compound contains and the ratio of the atoms or ions of these elements in the compound
  3. - an ion with a positive charge
  4. reaction - a chemical reaction in which two or more substances react to form a single substance
  5. - a mixture of two or more elements, at least one of which is a metal, that has the characteristic properties of a metal
  6. reaction - a chemical reaction in which a compound breaks down into two or more simpler substances
  7. equation - a representation of a chemical reaction in which the reactants and products are expressed as formulas
  8. - an ion with a negative charge
  9. - numbers that appear before a formula in a chemical equation to show the relative proportions of each reactant and product
  10. - a neutral group of atoms that are joined together by one or more covalent bonds
  11. bond - a chemical bond in which two atoms share a pair of valence electrons

20 Clues: - an ion with a positive charge • - an ion with a negative charge • energy - the energy stored in chemical bonds • bond - the force that holds cations and anions together • - a substance that undergoes change in a chemical reaction • - new substances formed as a result of a chemical reaction • bond - the force that holds atoms or ions together as a unit • ...

Chemical reactions 2014-11-20

Chemical reactions crossword puzzle
Across
  1. law stating that every pure substance always contains the same elements combined in the same proportions by weight
  2. a chemical reaction that releases heat. Opposite of exothermic reaction
  3. a process in which one or more substances are changed into others
  4. the reaction of an acid with a base to form salt and water
  5. a chemical reaction accompanied by the evolution of heat
  6. a compound usually having a sour taste and capable of neutralising alkins, and reddening of blue litmus paper.
  7. a substance that, in aqueous solution, is slippery to the touch, tastes bitter, changes the colour of indicators, reacts with acids to form salts, and promotes certain chemical reactions.
  8. able to be dissolved, especially in water
  9. is either a weak acid or weak base that exhibits a colour change as the concentration of hydrogen or hydrogen ions changes in an aqueous solution
  10. a scale ranging from 0 to 14 Ph units, reflecting the concentration of hydrogen ions in a solution
  11. a substance that takes part in and undergoes change during a reaction products-of-a-
  12. an atom or molecule that has acquired a charge by either gaining or losing electrons. An atom or molecule with missing electrons has a net positive charge and is called a cation one with extra electrons has a net negative charge and is called an anion
  13. the smallest particle of an element that retains the chemical properties of the element. They are are electrically neutral, with a positively charged nucleus that binds one or more electrons in motion around it.
Down
  1. a chemical substance formed as a result of a chemical reaction
  2. a fundamental principle of physics. According to the law, matter can neither be destroyed nor created
  3. a arrangement of the elements according to increasing atomic number that shows relationships between element properties
  4. impossible to dissolve
  5. a reaction that forms one mole of a compound from its elements in their most stable forms
  6. a substance having the tendency to cause corrosion. Capable of destroying or eating away by chemical action
  7. is a type of chemical reaction where a compound and an oxidant is reacted to produce heat and a new product

20 Clues: impossible to dissolve • able to be dissolved, especially in water • a chemical reaction accompanied by the evolution of heat • the reaction of an acid with a base to form salt and water • a chemical substance formed as a result of a chemical reaction • a process in which one or more substances are changed into others • ...

Chimestry 2024-04-01

Chimestry crossword puzzle
Across
  1. rocks: Minerals with high resistance to erosion (9).
  2. chemistry: Study of carbon-based compounds (15).
  3. Analytical technique to determine concentration (9).
  4. Ionic compounds formed from the reaction of an acid and a base (5).
  5. Substance that speeds up a chemical reaction (8).
  6. Balanced state in a reversible reaction (11).
  7. Loss of electrons in a chemical reaction (9).
  8. Subatomic particle with a negative charge (8).
  9. Variant of an element with a different number of neutrons (7).
  10. Smallest unit of a chemical compound (8).
Down
  1. Basic substances that neutralize acids (7).
  2. Chemical compounds that can donate protons (5).
  3. Joining of atoms to form compounds (7).
  4. apparatus: Equipment used in scientific experiments (16).
  5. Answer that’s found in the chemistry lab? (6) 1.
  6. An anagram (‘orderly mixture’) of ‘berry bush’ is SHRUBBERY, which could be defined as ‘orderly mixture of berry bush’ 2.
  7. table: Arrangement of chemical elements (13).
  8. fuels: Energy sources derived from ancient organic matter (11).
  9. families: Groups of elements with similar properties (17).
  10. Chemical process resulting in a change (8).

20 Clues: Joining of atoms to form compounds (7). • Smallest unit of a chemical compound (8). • Basic substances that neutralize acids (7). • Chemical process resulting in a change (8). • table: Arrangement of chemical elements (13). • Balanced state in a reversible reaction (11). • Loss of electrons in a chemical reaction (9). • Subatomic particle with a negative charge (8). • ...

Chemical reactions 2021-01-13

Chemical reactions crossword puzzle
Across
  1. The starting substances in a chemical reaction
  2. The product in this reaction: carbon + oxygen
  3. Type of reaction in which you cannot get back the substances you started with
  4. A substance made of two or more atoms chemically joined together
  5. A chemical _____ shows how many atoms of each elements are in a compound
  6. A possible source of danger
  7. A change which transfers energy to the surroundings
Down
  1. A chemical reaction with oxygen that gives out light and heat
  2. A possible source of danger
  3. A chemical reaction in which a compound breaks down into simpler parts
  4. A change which transfers energy from the surroundings
  5. A common name for the reaction described in clue 1 down
  6. When observing a chemical reaction, you might feel the chemicals change in _____.
  7. A change in which atoms are rearranged to create a new substance(s)
  8. The resulting substances in a chemical reaction
  9. When a chemical reaction occurs, _____ is transferred to or from the surroundings

16 Clues: A possible source of danger • A possible source of danger • The product in this reaction: carbon + oxygen • The starting substances in a chemical reaction • The resulting substances in a chemical reaction • A change which transfers energy to the surroundings • A change which transfers energy from the surroundings • ...

Chemical reactions 2023-02-06

Chemical reactions crossword puzzle
Across
  1. law stating that every pure substance always contains the same elements combined in the same proportions by mass
  2. a process in which one or more substances are changed into others
  3. is either a weak acid or weak base that exhibits a colour change as the concentration of hydrogen or hydrogen ions changes in an aqueous solution
  4. the smallest particle of an element that retains the chemical properties of the element. They are are electrically neutral, with a positively charged nucleus that binds one or more electrons in motion around it.
  5. a substance having the tendency to cause corrosion. Capable of destroying or eating away by chemical action
  6. a substance that, in aqueous solution, is slippery to the touch, tastes bitter, changes the colour of indicators, reacts with acids to form salts, and promotes certain chemical reactions.
  7. a substance that takes part in and undergoes change during a reaction products-of-a-
  8. a arrangement of the elements according to increasing atomic number that shows relationships between element properties
  9. impossible to dissolve
  10. is a type of chemical reaction where a compound and an oxidant is reacted to produce heat and a new product
  11. a chemical reaction accompanied by the evolution of heat
  12. able to be dissolved, especially in water
Down
  1. a reaction that forms one mole of a compound from its elements in their most stable forms
  2. the reaction of an acid with a base to form salt and water
  3. a fundamental principle of physics. According to the law, matter can neither be destroyed nor created
  4. a scale ranging from 0 to 14 Ph units, reflecting the concentration of hydrogen ions in a solution
  5. a chemical substance formed as a result of a chemical reaction
  6. an atom or molecule that has acquired a charge by either gaining or losing electrons. An atom or molecule with missing electrons has a net positive charge and is called a cation one with extra electrons has a net negative charge and is called an anion
  7. a chemical reaction that releases heat. Opposite of exothermic reaction
  8. a compound usually having a sour taste and capable of neutralising alkins, and reddening of blue litmus paper.

20 Clues: impossible to dissolve • able to be dissolved, especially in water • a chemical reaction accompanied by the evolution of heat • the reaction of an acid with a base to form salt and water • a chemical substance formed as a result of a chemical reaction • a process in which one or more substances are changed into others • ...

7IC Chemical reactions 2024-06-04

7IC Chemical reactions crossword puzzle
Across
  1. a chemical reaction that can go forwards and backwards
  2. a gas that is added to swimming pools to kill viruses and bacteria
  3. one of the five observations that shows a chemical reaction has happened
  4. this is another name for burning
  5. the molten metal made at 2500C from the thermite reaction
  6. has the formula CO2
  7. the name for a solid that forms in a chemical reaction
Down
  1. the chemicals that are made in a chemical reaction
  2. the name for a reaction that gets hotter
  3. this is a chemical reaction where oxygen is added
  4. the chemical that start a chemical reaction
  5. this evidence shows that a gas is being produced
  6. the gas that makes a squeeky pop when it is set alight
  7. Lithium Sodium and Potassium all belong to this reactive group of metals
  8. the name for a reaction that gets colder

15 Clues: has the formula CO2 • this is another name for burning • the name for a reaction that gets hotter • the name for a reaction that gets colder • the chemical that start a chemical reaction • this evidence shows that a gas is being produced • this is a chemical reaction where oxygen is added • the chemicals that are made in a chemical reaction • ...

Chemical Reactions and Equations 2025-04-30

Chemical Reactions and Equations crossword puzzle
Across
  1. A reaction where a compound breaks down into simpler substances.
  2. A symbolic representation of a chemical reaction.
  3. A reaction in which two compounds exchange ions to form new compounds.
  4. Loss of electrons or gain of oxygen in a chemical reaction.
  5. An equation where the number of atoms is not equal on both sides.
  6. A reaction that absorbs heat.
  7. Gain of electrons or loss of oxygen in a chemical reaction.
Down
  1. A reaction that releases heat.
  2. A reaction where a more reactive element displaces a less reactive element from its compound.
  3. A reaction where two or more substances combine to form one product.
  4. – A reaction in which an insoluble solid (precipitate) forms and separates out of a solution.
  5. Substances that take part in a chemical reaction.
  6. A chemical equation with equal number of atoms of each element on both sides.
  7. Substances formed as a result of a chemical reaction.
  8. A reaction involving both reduction and oxidation processes.

15 Clues: A reaction that absorbs heat. • A reaction that releases heat. • Substances that take part in a chemical reaction. • A symbolic representation of a chemical reaction. • Substances formed as a result of a chemical reaction. • Loss of electrons or gain of oxygen in a chemical reaction. • Gain of electrons or loss of oxygen in a chemical reaction. • ...

Chemistry 2 2012-11-08

Chemistry 2 crossword puzzle
Across
  1. The substance(s) that begin a chemical reaction, what you start with
  2. reaction involving the particles in the nucleus of an atom that can change one element into another element
  3. Reactants __________ products during a chemical reaction
  4. type of nuclear radiation made up of 2 or more elements consisting of 2 protons and 2 neutrons
  5. one or two letter set of characters used to represent an element
  6. process in which radioactive elements are used to destroy unhealthy cells
  7. process of determining the age of an object using the half-life of one or more radioactive isotopes
  8. When an atom __________ one of its negatively charged electrons, it becomes a positively charged ion.
  9. combination of symbols that represent the elements in a compound
  10. Tells you the number of atoms in a molecule or the ratio of elements in a compound
  11. Two or more substances combine to make a more complex one during a chemical reaction
  12. electron that is given off as nuclear radiation
  13. chemical bond formed when one atom steals electrons from another
Down
  1. covalent bond where electrons are shared unequally
  2. type of nuclear radiation made up of high energy waves
  3. Particles and energy that are released from a radioactive nucleus
  4. Reacts with carbon in a replacement reaction
  5. chemical bond formed when two atoms share electrons
  6. chemical reaction that breaks down compounds into simpler products
  7. covalent bond where electrons are shared equally
  8. The length of time needed for half the mass of a radioactive isotope to decay
  9. chemical bond formed when atoms share two pairs of electrons
  10. substance formed as a result of a chemical reaction, what you end with
  11. Matter is not created or destroyed during a chemical reaction
  12. three-dimensional pattern of ions in a solid
  13. Two or more elements trade places with each other during a chemical reaction
  14. ion that is made up of more than one atom
  15. Shows chemical reactions using symbols instead of words
  16. electrically charged particle
  17. atom with the same number of protons and different number of neutrons from other atoms of the same element
  18. The sum of the protons and neutrons in the nucleus of an atom
  19. number in front of a chemical formula that tells you how many molecules of the atoms are present in the reaction.

32 Clues: electrically charged particle • ion that is made up of more than one atom • Reacts with carbon in a replacement reaction • three-dimensional pattern of ions in a solid • electron that is given off as nuclear radiation • covalent bond where electrons are shared equally • covalent bond where electrons are shared unequally • ...

Vocab 6 and 7 Crossword 2013-10-08

Vocab 6 and 7 Crossword crossword puzzle
Across
  1. an atom or group of atoms that has a positive or negative charge
  2. a substance that undergoes change in a chemical reaction
  3. a representation of a chemical reaction in which the reactants and products are expressed as formulas
  4. a diagram of an atom where each dot represents a valence electron
  5. a chemical reaction in which two or more substances react to form a single substance
  6. a chemical reaction that releases energy to its surrounding
  7. a chemical bond in which two atoms share a pair of valence electrons
  8. the energy stored in chemical bonds
  9. the force that holds cations and anions together
Down
  1. a new substance that forms as a result of a chemical reaction
  2. a chemical reaction in which electrons are transferred from one reactant to another
  3. numbers that appear before a formula in a chemical equation to show the relative proportions of each reactant and product
  4. a notation that shows what elements a compound contains and the ration of the atoms or ions of these elements in the compound
  5. a chemical reaction in which a substance reacts rapidly with oxygen, often producing heat and light
  6. an ion with a negative charge
  7. an amount of a substance that contains approximately 6.02 x 10^23 particles of the substance
  8. a neutral group of atoms that are joined together by one or more covalent bonds
  9. an ion with a positive charge

18 Clues: the energy stored in chemical bonds • an ion with a positive charge • an ion with a negative charge • the force that holds cations and anions together • a chemical reaction that releases energy to its surrounding • a diagram of an atom where each dot represents a valence electron • ...

Chemistry Crossword 2017-11-07

Chemistry Crossword crossword puzzle
Across
  1. Substance that reacts with another substance or substances in a chemical reaction to create new substances with different properties
  2. Chemical combination of two or more elements in a specific ratio
  3. Pure substance that cannot be broken down into other substances; substance made up of only one type of atom
  4. Orbit of electrons around the nucleus of an atom
  5. A material that electric charge can move through easily
  6. Pure substances formed as a result of the attraction between the particles of opposite charges called ions
  7. new substance produced in a chemical reaction between reactants
  8. Combination of symbols that represent a compound; the formula identifies the elements in the compound and the amount of each element
  9. change that results when 2 or more substances react to make a new substance
  10. in a chemical reaction is always equal to the total mass of the products
  11. Invisible negatively charged particle that orbits the nucleus of an atom
  12. Mass of one atom of an element calculated from the total number of protons, neutrons and electrons of that atom; measured in atomic mass units (amu)
Down
  1. Substances that help a reaction proceed faster
  2. Group one elements in the periodic table. Not including hydrogen; the most reactive of the metals.
  3. Number of protons in the nucleus of one atom of an element
  4. An experiment in which all the reactants and all products of a chemical reaction are accounted for
  5. A reaction that takes place when two or more substances react to form new substances
  6. Chemical reaction that occurs when oxygen reacts with a substance to form a new substance and give off energy
  7. Organic catalysts
  8. Group 2 elements in the periodic table; their reactivity is not a strong as that of the alkali metals
  9. Absorbs heat
  10. Releases heat
  11. An experiment in which one or more products of chemical reaction can escape
  12. Is a chemical reaction that takes place in the cells in your body food (glucose) reacts with oxygen to produce energy, water and carbon dioxide.
  13. Speed of a chemical reaction
  14. Slow chemical change

26 Clues: Absorbs heat • Releases heat • Organic catalysts • Slow chemical change • Speed of a chemical reaction • Substances that help a reaction proceed faster • Orbit of electrons around the nucleus of an atom • A material that electric charge can move through easily • Number of protons in the nucleus of one atom of an element • ...

Everyday Reactions 2013-12-01

Everyday Reactions crossword puzzle
Across
  1. These are found in the periodic table.
  2. The most important element in air is __________.
  3. The chemical formula for water
  4. In a chemical reaction the substances you start with are called ____________.
  5. A type of reduction reaction using heat.
  6. The way in which iron is extracted from iron ore.
  7. Burning paper is a ___________ reaction.
  8. The removal of oxygen from a compound is called a __________ reaction.
  9. Ice melting is a ____________ reaction.
  10. The name of the element Mg.
  11. The chemical formula for carbon dioxide.
Down
  1. A piece of equipment used to heat a substance.
  2. The name of the element Fe.
  3. When everything in a reaction has reacted, you are left with the ____________.
  4. A type of reaction where heat is give out.
  5. All metals react with oxygen, and this is called _________.
  6. Oxygen and water are required for this reaction and salt speeds it up.
  7. Hydrogen and carbon dioxide are both ________.
  8. Oxygen, heat source and fuel are required for this reaction.
  9. A type of reaction where heat is absorbed.
  10. A type of reaction in the body that changes food (fuel) into energy, water and carbon dioxide.
  11. The addition of oxygen to a compound is called an ___________ reaction.
  12. A compound that contains hydrogen and oxygen.

23 Clues: The name of the element Fe. • The name of the element Mg. • The chemical formula for water • These are found in the periodic table. • Ice melting is a ____________ reaction. • A type of reduction reaction using heat. • Burning paper is a ___________ reaction. • The chemical formula for carbon dioxide. • A type of reaction where heat is give out. • ...

Everyday Reactions 2013-12-01

Everyday Reactions crossword puzzle
Across
  1. A compound that contains hydrogen and oxygen.
  2. A piece of equipment used to heat a substance.
  3. Burning paper is a ___________ reaction.
  4. Hydrogen and carbon dioxide are both ________.
  5. Oxygen, heat source and fuel are required for this reaction.
  6. A type of reaction where heat is absorbed.
  7. A type of reaction in the body that changes food (fuel) into energy, water and carbon dioxide.
  8. A type of reaction where heat is give out.
  9. The addition of oxygen to a compound is called an ___________ reaction.
  10. The name of the element Fe.
  11. The chemical formula for water
  12. Ice melting is a ____________ reaction.
Down
  1. A type of reduction reaction using heat.
  2. In a chemical reaction the substances you start with are called ____________.
  3. Oxygen and water are required for this reaction and salt speeds it up.
  4. The name of the element Mg.
  5. When everything in a reaction has reacted, you are left with the ____________.
  6. The way in which iron is extracted from iron ore.
  7. All metals react with oxygen, and this is called _________.
  8. These are found in the periodic table.
  9. The removal of oxygen from a compound is called a __________ reaction.
  10. The most important element in air is __________.
  11. The chemical formula for carbon dioxide.

23 Clues: The name of the element Mg. • The name of the element Fe. • The chemical formula for water • These are found in the periodic table. • Ice melting is a ____________ reaction. • A type of reduction reaction using heat. • Burning paper is a ___________ reaction. • The chemical formula for carbon dioxide. • A type of reaction where heat is absorbed. • ...

Everyday Reactions 2013-12-01

Everyday Reactions crossword puzzle
Across
  1. A type of reaction where heat is give out.
  2. The name of the element Mg.
  3. The way in which iron is extracted from iron ore.
  4. A piece of equipment used to heat a substance.
  5. The addition of oxygen to a compound is called an ___________ reaction.
  6. When everything in a reaction has reacted, you are left with the ____________.
  7. These are found in the periodic table.
  8. A type of reaction in the body that changes food (fuel) into energy, water and carbon dioxide.
  9. Oxygen, heat source and fuel are required for this reaction.
  10. The chemical formula for water
  11. All metals react with oxygen, and this is called _________.
  12. Ice melting is a ____________ reaction.
  13. The name of the element Fe.
  14. In a chemical reaction the substances you start with are called ____________.
Down
  1. A type of reduction reaction using heat.
  2. Burning paper is a ___________ reaction.
  3. Oxygen and water are required for this reaction and salt speeds it up.
  4. A type of reaction where heat is absorbed.
  5. The removal of oxygen from a compound is called a __________ reaction.
  6. The most important element in air is __________.
  7. The chemical formula for carbon dioxide.
  8. Hydrogen and carbon dioxide are both ________.
  9. A compound that contains hydrogen and oxygen.

23 Clues: The name of the element Mg. • The name of the element Fe. • The chemical formula for water • These are found in the periodic table. • Ice melting is a ____________ reaction. • A type of reduction reaction using heat. • Burning paper is a ___________ reaction. • The chemical formula for carbon dioxide. • A type of reaction where heat is give out. • ...

Everyday Reactions 2013-12-01

Everyday Reactions crossword puzzle
Across
  1. A type of reaction where heat is give out.
  2. These are found in the periodic table.
  3. The name of the element Mg.
  4. The most important element in air is __________.
  5. A type of reaction in the body that changes food (fuel) into energy, water and carbon dioxide.
  6. The name of the element Fe.
  7. All metals react with oxygen, and this is called _________.
  8. A type of reaction where heat is absorbed.
  9. Oxygen and water are required for this reaction and salt speeds it up.
  10. Burning paper is a ___________ reaction.
  11. The chemical formula for carbon dioxide.
Down
  1. A piece of equipment used to heat a substance.
  2. Hydrogen and carbon dioxide are both ________.
  3. A type of reduction reaction using heat.
  4. The addition of oxygen to a compound is called an ___________ reaction.
  5. A compound that contains hydrogen and oxygen.
  6. The way in which iron is extracted from iron ore.
  7. Oxygen, heat source and fuel are required for this reaction.
  8. When everything in a reaction has reacted, you are left with the ____________.
  9. In a chemical reaction the substances you start with are called ____________.
  10. The chemical formula for water
  11. Ice melting is a ____________ reaction.
  12. The removal of oxygen from a compound is called a __________ reaction.

23 Clues: The name of the element Mg. • The name of the element Fe. • The chemical formula for water • These are found in the periodic table. • Ice melting is a ____________ reaction. • A type of reduction reaction using heat. • Burning paper is a ___________ reaction. • The chemical formula for carbon dioxide. • A type of reaction where heat is give out. • ...

Science Articles 2020-04-03

Science Articles crossword puzzle
Across
  1. could result from a chemical reaction
  2. instrument used to measure melting point
  3. beginning substance in a chemical reaction(old)
  4. takes up space
  5. only state of matter that can have melting point
  6. amount of matter in an object
  7. mass in a set volume of a substance
  8. happens to dead organisms
  9. substance made by a chemical reaction(new)
Down
  1. liquid to gaseous state
  2. current color of "Lady Liberty"
  3. metal used in soda cans (not soluble in water)
  4. a phase change
  5. splitting apart molecules
  6. property of matter
  7. substance able to dissolve many substances
  8. used in salad dressings and chemical reactions
  9. metal used on a roof
  10. solid formed from a chemical reaction

19 Clues: a phase change • takes up space • property of matter • metal used on a roof • liquid to gaseous state • splitting apart molecules • happens to dead organisms • amount of matter in an object • current color of "Lady Liberty" • mass in a set volume of a substance • could result from a chemical reaction • solid formed from a chemical reaction • instrument used to measure melting point • ...

Everyday Reactions 2013-12-01

Everyday Reactions crossword puzzle
Across
  1. All metals react with oxygen, and this is called _________.
  2. A type of reaction where heat is absorbed.
  3. A type of reduction reaction using heat.
  4. Oxygen, heat source and fuel are required for this reaction.
  5. A type of reaction where heat is give out.
  6. Hydrogen and carbon dioxide are both ________.
  7. A piece of equipment used to heat a substance.
  8. Oxygen and water are required for this reaction and salt speeds it up.
  9. Burning paper is a ___________ reaction.
Down
  1. A compound that contains hydrogen and oxygen.
  2. The name of the element Fe.
  3. The way in which iron is extracted from iron ore.
  4. The most important element in air is __________.
  5. The addition of oxygen to a compound is called an ___________ reaction.
  6. A type of reaction in the body that changes food (fuel) into energy, water and carbon dioxide.
  7. When everything in a reaction has reacted, you are left with the ____________.
  8. The chemical formula for water
  9. The chemical formula for carbon dioxide.
  10. Ice melting is a ____________ reaction.
  11. These are found in the periodic table.
  12. The name of the element Mg.
  13. In a chemical reaction the substances you start with are called ____________.
  14. The removal of oxygen from a compound is called a __________ reaction.

23 Clues: The name of the element Fe. • The name of the element Mg. • The chemical formula for water • These are found in the periodic table. • Ice melting is a ____________ reaction. • The chemical formula for carbon dioxide. • A type of reduction reaction using heat. • Burning paper is a ___________ reaction. • A type of reaction where heat is absorbed. • ...

Chemical Reaction 2020-07-01

Chemical Reaction crossword puzzle
Across
  1. is a material made up of two or more elements
  2. a solid that forms from solution during a chemical reaction
  3. is a substance that cannot break down into another one by a chemical or physical means
  4. a solid that forms from solution during a chemical reaction
  5. a well mixed-mixture
Down
  1. consists of two or more pure substances, i.e; elements, compounds, or both, that are in the same place but are not chemically bonded
  2. a kind of change in matter that forms one or more new substances
  3. is the study of properties of matter and how matter changes
  4. Anything that has mass and takes up space
  5. a kind of change that alters the form of a substance without changing it into a new substance
  6. the smallest particle of an element

11 Clues: a well mixed-mixture • the smallest particle of an element • Anything that has mass and takes up space • is a material made up of two or more elements • is the study of properties of matter and how matter changes • a solid that forms from solution during a chemical reaction • a solid that forms from solution during a chemical reaction • ...

chemical reaction 2021-03-09

chemical reaction crossword puzzle
Across
  1. energy that is released to the surroundings
  2. decreases reaction rate by increasing energy
  3. chemicals that exist before the reaction
  4. the way acids react with some metals and appear to wear them away
  5. reacts with fats
Down
  1. energy is absorbed from surroundings
  2. biological catalyst that aid in reaction
  3. increases reaction rate by lowering energy
  4. substances made by the reaction
  5. reacts with metals

10 Clues: reacts with fats • reacts with metals • substances made by the reaction • energy is absorbed from surroundings • biological catalyst that aid in reaction • chemicals that exist before the reaction • increases reaction rate by lowering energy • energy that is released to the surroundings • decreases reaction rate by increasing energy • ...

Vocab 6 & 7 2023-11-03

Vocab 6 & 7 crossword puzzle
Across
  1. dot diagram - a diagram of an atom, ion or molecule in which each dot represents a valence electron
  2. - a substance that undergoes change in a chemical reaction
  3. reaction - a chemical reaction in which one element takes the place of another element in a compound
  4. bond - the force that holds atoms or ions together as a unit
  5. energy - the energy stored in chemical bonds
  6. bond - the force that holds cations and anions together
  7. bond - the attraction between a metal cation and the shared electrons that surround it
  8. - an atom or group of atoms that has a positive or negative charge
  9. - new substances formed as a result of a chemical reaction
Down
  1. reaction - a chemical reaction in which two compounds exchange positive ions and form new compounds
  2. formula - notation that shows what elements a compound contains and the ratio of the atoms or ions of these elements in the compound
  3. - an ion with a positive charge
  4. reaction - a chemical reaction in which two or more substances react to form a single substance
  5. - a mixture of two or more elements, at least one of which is a metal, that has the characteristic properties of a metal
  6. reaction - a chemical reaction in which a compound breaks down into two or more simpler substances
  7. equation - a representation of a chemical reaction in which the reactants and products are expressed as formulas
  8. - an ion with a negative charge
  9. - numbers that appear before a formula in a chemical equation to show the relative proportions of each reactant and product
  10. - a neutral group of atoms that are joined together by one or more covalent bonds
  11. bond - a chemical bond in which two atoms share a pair of valence electrons

20 Clues: - an ion with a positive charge • - an ion with a negative charge • energy - the energy stored in chemical bonds • bond - the force that holds cations and anions together • - a substance that undergoes change in a chemical reaction • - new substances formed as a result of a chemical reaction • bond - the force that holds atoms or ions together as a unit • ...

669 2024-05-10

669 crossword puzzle
Across
  1. something that can be observed about a substance, such as color, smell, or boiling point
  2. Energy needed to get a reaction started
  3. a chemical reaction where two elements in different compounds trade places
  4. Reaction A reaction that releases energy in the form of heat
  5. the production of chemical compounds by reaction from simpler materials.
  6. The heat content of a system at constant pressure
  7. a chemical equation in which mass is conserved; each side of the equation has the same number of atoms of each element
Down
  1. A rapid reaction between oxygen and fuel that results in fire
  2. Reaction A reaction that ABSORBS energy in the form of heat
  3. A characteristic of a pure substance that can be observed without changing it into another substance
  4. Chemical agents that selectively speed up chemical reactions without being consumed by the reaction.
  5. A measure of how much solute can dissolve in a given solvent at a given temperature.
  6. one element replaces another element in a compound
  7. the reaction of an acid and a base to form a neutral solution of water and a salt
  8. A solid that forms from a solution during a chemical reaction.
  9. Break down of a chemical organism

16 Clues: Break down of a chemical organism • Energy needed to get a reaction started • The heat content of a system at constant pressure • one element replaces another element in a compound • Reaction A reaction that ABSORBS energy in the form of heat • Reaction A reaction that releases energy in the form of heat • ...

Ch 6 and 7 2024-04-02

Ch 6 and 7 crossword puzzle
Across
  1. dot diagram - a diagram of an atom, ion or molecule in which each dot represents a valence electron
  2. - a substance that undergoes change in a chemical reaction
  3. reaction - a chemical reaction in which one element takes the place of another element in a compound
  4. bond - the force that holds atoms or ions together as a unit
  5. energy - the energy stored in chemical bonds
  6. bond - the force that holds cations and anions together
  7. bond - the attraction between a metal cation and the shared electrons that surround it
  8. - an atom or group of atoms that has a positive or negative charge
  9. - new substances formed as a result of a chemical reaction
Down
  1. reaction - a chemical reaction in which two compounds exchange positive ions and form new compounds
  2. formula - notation that shows what elements a compound contains and the ratio of the atoms or ions of these elements in the compound
  3. - an ion with a positive charge
  4. reaction - a chemical reaction in which two or more substances react to form a single substance
  5. - a mixture of two or more elements, at least one of which is a metal, that has the characteristic properties of a metal
  6. reaction - a chemical reaction in which a compound breaks down into two or more simpler substances
  7. equation - a representation of a chemical reaction in which the reactants and products are expressed as formulas
  8. - an ion with a negative charge
  9. - numbers that appear before a formula in a chemical equation to show the relative proportions of each reactant and product
  10. - a neutral group of atoms that are joined together by one or more covalent bonds
  11. bond - a chemical bond in which two atoms share a pair of valence electrons

20 Clues: - an ion with a positive charge • - an ion with a negative charge • energy - the energy stored in chemical bonds • bond - the force that holds cations and anions together • - a substance that undergoes change in a chemical reaction • - new substances formed as a result of a chemical reaction • bond - the force that holds atoms or ions together as a unit • ...

Chemical Reactions 2024-02-16

Chemical Reactions crossword puzzle
Across
  1. The arrow symbol used to indicate the direction of a chemical reaction.
  2. A substance that undergoes a chemical reaction.
  3. The process of absorbing heat from the surroundings during a chemical reaction.
  4. The number written below and to the right of a chemical symbol in a chemical formula.
  5. The process of breaking down a compound into simpler substances.
  6. The process of combining two or more substances to form a new compound.
  7. A chemical reaction that releases energy in the form of heat and light.
Down
  1. A chemical reaction in which a compound reacts with oxygen to produce carbon dioxide and water.
  2. The process of releasing heat into the surroundings during a chemical reaction.
  3. The process of forming a solid from a solution during a chemical reaction.
  4. A chemical reaction in which two elements in different compounds exchange places to form two new compounds.
  5. A chemical reaction in which a single element replaces another element in a compound.
  6. A substance that is formed as a result of a chemical reaction.
  7. of Conservation of mass The principle that states that mass is neither created nor destroyed in a chemical reaction.
  8. The number written in front of a chemical formula to balance a chemical equation.

15 Clues: A substance that undergoes a chemical reaction. • A substance that is formed as a result of a chemical reaction. • The process of breaking down a compound into simpler substances. • The arrow symbol used to indicate the direction of a chemical reaction. • The process of combining two or more substances to form a new compound. • ...

Chemical change 2024-10-02

Chemical change crossword puzzle
Across
  1. – The substance(s) created at the end of a chemical reaction.
  2. – A reaction that happens when something burns.
  3. – How easily something can catch fire.
  4. – How well a substance can dissolve in a liquid.
  5. – A solid that forms in a liquid during a chemical reaction.
  6. – When a complex substance breaks down into simpler ones.
  7. – A substance with a pH less than 7 that tastes sour.
  8. – The starting material(s) in a chemical reaction.
  9. – A reaction that absorbs heat.
Down
  1. – A reaction that releases heat.
  2. – The gradual destruction of materials, often metal, by chemical reactions.
  3. – A substance with a pH greater than 7 that feels slippery.
  4. – When a substance combines with oxygen, often causing rust.
  5. – When two or more simple substances combine to form something more complex.
  6. – A state where the reactants and products in a reaction stay balanced over time.
  7. – When two or more substances change to form something new.
  8. – Something that speeds up a chemical reaction but isn’t used up.
  9. – When an acid and a base cancel each other out.

18 Clues: – A reaction that absorbs heat. • – A reaction that releases heat. • – How easily something can catch fire. • – A reaction that happens when something burns. • – How well a substance can dissolve in a liquid. • – When an acid and a base cancel each other out. • – The starting material(s) in a chemical reaction. • – A substance with a pH less than 7 that tastes sour. • ...

Chemical Reaction 2022-10-13

Chemical Reaction crossword puzzle
Across
  1. Represents a chemical reaction.
  2. A metal hydroxide
  3. Is separated from reactants with a plus(+) sign.
  4. An element and compound that react to form a different element and compound.
Down
  1. Two compounds that react to form two new compounds.
  2. A reaction with oxygen.
  3. Is a reaction between an acid and a base.
  4. Two elements combine to form a compound.
  5. Can be balanced or unbalanced.
  6. A compound breaks down into elements and/or smaller compounds.

10 Clues: A metal hydroxide • A reaction with oxygen. • Can be balanced or unbalanced. • Represents a chemical reaction. • Two elements combine to form a compound. • Is a reaction between an acid and a base. • Is separated from reactants with a plus(+) sign. • Two compounds that react to form two new compounds. • A compound breaks down into elements and/or smaller compounds. • ...

Ch 6+7 Vocab 2024-04-02

Ch 6+7 Vocab crossword puzzle
Across
  1. dot diagram a diagram of an atom, ion or molecule in which each dot represents a valence electron
  2. a substance that undergoes change in a chemical reaction
  3. reaction a chemical reaction in which one element takes the place of another element in a compound
  4. bond the force that holds atoms or ions together as a unit
  5. energy the energy stored in chemical bonds
  6. bond the force that holds cations and anions together
  7. bond the attraction between a metal cation and the shared electrons that surround it
  8. an atom or group of atoms that has a positive or negative charge
  9. new substances formed as a result of a chemical reaction
Down
  1. reaction a chemical reaction in which two compounds exchange positive ions and form new compounds
  2. formula notation that shows what elements a compound contains and the ratio of the atoms or ions of these elements in the compound
  3. an ion with a positive charge
  4. reaction a chemical reaction in which two or more substances react to form a single substance
  5. a mixture of two or more elements, at least one of which is a metal, that has the characteristic properties of a metal
  6. reaction a chemical reaction in which a compound breaks down into two or more simpler substances
  7. equations a representation of a chemical reaction in which the reactants and products are expressed as formulas
  8. an ion with a negative charge
  9. numbers that appear before a formula in a chemical equation to show the relative proportions of each reactant and product
  10. a neutral group of atoms that are joined together by one or more covalent bonds
  11. bond a chemical bond in which two atoms share a pair of valence electrons

20 Clues: an ion with a positive charge • an ion with a negative charge • energy the energy stored in chemical bonds • bond the force that holds cations and anions together • a substance that undergoes change in a chemical reaction • new substances formed as a result of a chemical reaction • bond the force that holds atoms or ions together as a unit • ...

Vocab 6-7 2024-04-02

Vocab 6-7 crossword puzzle
Across
  1. dot diagram a diagram of an atom, ion or molecule in which each dot represents a valence electron
  2. a substance that undergoes change in a chemical reaction
  3. reaction a chemical reaction in which one element takes the place of another element in a compound
  4. bond the force that holds atoms or ions together as a unit
  5. energy the energy stored in chemical bonds
  6. bond the force that holds cations and anions together
  7. bond the attraction between a metal cation and the shared electrons that surround it
  8. an atom or group of atoms that has a positive or negative charge
  9. new substances formed as a result of a chemical reaction
Down
  1. reaction a chemical reaction in which two compounds exchange positive ions and form new compounds
  2. formula notation that shows what elements a compound contains and the ratio of the atoms or ions of these elements in the compound
  3. an ion with a positive charge
  4. reaction a chemical reaction in which two or more substances react to form a single substance
  5. a mixture of two or more elements, at least one of which is a metal, that has the characteristic properties of a metal
  6. reaction a chemical reaction in which a compound breaks down into two or more simpler substances
  7. equation a representation of a chemical reaction in which the reactants and products are expressed as formulas
  8. an ion with a negative charge
  9. numbers that appear before a formula in a chemical equation to show the relative proportions of each reactant and product
  10. a neutral group of atoms that are joined together by one or more covalent bonds
  11. bond a chemical bond in which two atoms share a pair of valence electrons

20 Clues: an ion with a positive charge • an ion with a negative charge • energy the energy stored in chemical bonds • a substance that undergoes change in a chemical reaction • new substances formed as a result of a chemical reaction • an atom or group of atoms that has a positive or negative charge • ...

Chemical reactions 2014-11-20

Chemical reactions crossword puzzle
Across
  1. a compound usually having a sour taste and capable of neutralising alkins, and reddening of blue litmus paper.
  2. law stating that every pure substance always contains the same elements combined in the same proportions by weight
  3. / a reaction that forms one mole of a compound from its elements in their most stable forms
  4. / is a type of chemical reaction where a compound and an oxidant is reacted to produce heat and a new product
  5. a chemical reaction accompanied by the evolution of heat
  6. / an atom or molecule that has acquired a charge by either gaining or losing electrons. An atom or molecule with missing electrons has a net positive charge and is called a cation one with extra electrons has a net negative charge and is called an anion
  7. / is either a weak acid or weak base that exhibits a colour change as the concentration of hydrogen or hydrogen ions changes in an aqueous solution
  8. a chemical reaction that releases heat. Opposite of exothermic reaction
  9. / a arrangement of the elements according to increasing atomic number that shows relationships between element properties
  10. / impossible to dissolve
  11. a substance that, in aqueous solution, is slippery to the touch, tastes bitter, changes the colour of indicators, reacts with acids to form salts, and promotes certain chemical reactions.
  12. / the reaction of an acid with a base to form salt and water
Down
  1. a fundamental principle of physics. According to the law, matter can neither be destroyed nor created
  2. / the smallest particle of an element that retains the chemical properties of the element. They are are electrically neutral, with a positively charged nucleus that binds one or more electrons in motion around it.
  3. / a substance having the tendency to cause corrosion. Capable of destroying or eating away by chemical action
  4. a scale ranging from 0 to 14 Ph units, reflecting the concentration of hydrogen ions in a solution
  5. / able to be dissolved, especially in water
  6. / a process in which one or more substances are changed into others
  7. substance that takes part in and undergoes change during a reaction products-of-a-
  8. chemical substance formed as a result of a chemical reaction

20 Clues: / impossible to dissolve • / able to be dissolved, especially in water • a chemical reaction accompanied by the evolution of heat • chemical substance formed as a result of a chemical reaction • / the reaction of an acid with a base to form salt and water • / a process in which one or more substances are changed into others • ...

Physical and Chemical Properties 2024-12-11

Physical and Chemical Properties crossword puzzle
Across
  1. a chemical change in which a substance combines with oxygen, as when iron oxidizes, forming rust
  2. ability to burn in the presence of oxygen
  3. the amount of matter in an object
  4. A group of atoms bonded together, representing the smallest unit of a chemical compound.
  5. The ability to reflect light. Glitter, Sparkle, Gloss
  6. A combination of two or more substances that do not chemically combine.
  7. Ability to be drawn out into a wire
  8. A measure of acidity or basicity.
  9. The smallest unit of an element that retains the properties of that element.
  10. A number placed before a chemical formula in an equation, indicating how many molecules or moles of that substance are involved.
  11. The gradual destruction of a material, often metal,
  12. the resistance of a mineral to being scratched or changed in shape
  13. Ability to conduct heat or electricity
  14. A reaction that releases energy in the form of heat
  15. can be observed when substances react (combine) with another substance; as a result it becomes a new substance
Down
  1. temperature at which a substance changes from a liquid to a gas
  2. Ability to be flattened or spread out into thin sheets
  3. describes how easily a substance dissolves when mixed in water.
  4. A reaction that ABSORBS energy in the form of heat
  5. A solid that forms from a solution during a chemical reaction.
  6. the starting substances in a chemical reaction.
  7. chemical reaction that involves burning in oxygen to release heat and light.
  8. How a surface feels; a physical characteristic.
  9. A number written below and to the right of a chemical symbol in a formula, indicating the number of atoms of that element.
  10. A substance that increases the rate of a chemical reaction without being consumed.
  11. the new substances formed as a result of a chemical reaction.
  12. A chemical reaction that causes a loss of luster on metals
  13. The connection between atoms in a molecule that can change during a reaction.
  14. A chemical reaction in which a compound is broken down into simpler substances.
  15. temperature at which a substance changes from a solid to a liquid
  16. A representation used to explain or predict scientific phenomena, such as a balanced chemical equation.

31 Clues: the amount of matter in an object • A measure of acidity or basicity. • Ability to be drawn out into a wire • Ability to conduct heat or electricity • ability to burn in the presence of oxygen • the starting substances in a chemical reaction. • How a surface feels; a physical characteristic. • A reaction that ABSORBS energy in the form of heat • ...

Biochem Vocab 2020-09-04

Biochem Vocab crossword puzzle
Across
  1. molecules with the ability to accept electrons
  2. simple sugars
  3. atoms of elements with similar chemical behavior
  4. any compound that forms H^+ ions
  5. most abundant carbohydrate in food
  6. what goes through a chemical reaction
  7. are used to store energy
  8. living things use this as an energy source
  9. maintains a constant pH by neutralization
  10. loss of water to combine molecules
  11. a Chemical reaction: a acid & base react
  12. larger molecules composed of monomers
  13. energy needed for a chemical reaction
Down
  1. a biomolecule made of chains of amino acids
  2. a substance that an enzyme acts on
  3. organic composed of amine and carboxyl groups
  4. chemical breakdown due to reaction with water
  5. what is formed from a chemical reactions
  6. a sweet tasting soluble carbohydrate
  7. a sugar formed when 2 monosaccharides join
  8. generates oppositely charged ions
  9. leads to chemical transformation
  10. bond that evolves sharing electrons
  11. a polymeric carbohydrate
  12. polymers made of monomers called nucleotides
  13. smaller units that form polymers
  14. biological catalyst
  15. a substance that speeds up the rate of reaction
  16. molecules made of nucleoside and phosphate

29 Clues: simple sugars • biological catalyst • are used to store energy • a polymeric carbohydrate • any compound that forms H^+ ions • leads to chemical transformation • smaller units that form polymers • generates oppositely charged ions • a substance that an enzyme acts on • most abundant carbohydrate in food • loss of water to combine molecules • bond that evolves sharing electrons • ...

Chapter 12 Terms 2021-02-16

Chapter 12 Terms crossword puzzle
Across
  1. the number of steps it takes for a reaction to occur
  2. A catalyst that occurs in a biochemical reaction
  3. measure of the speed at which a chemical reaction takes place
  4. slowest elementary reaction in a reaction mechanism
  5. proportionally constant in a rate law
  6. the exponent of concentration in a rate law
  7. model that emphasizes the energy and orientation of molecular collisions to explain and predict reaction kinetics
  8. The amount of energy required in order for a reaction to occur
  9. the description of the rate of a reaction
  10. Reaction that has a one step process as depicted in its chemical equation
  11. An unstable combination of the reactant species formed during a chemical reaction
Down
  1. molecules that are orientated a certain way so that a reaction may occur
  2. mathematical representation defining reaction rate as change in amount, concentration or pressure of a reactant or product species per unit time
  3. Reaction that causes other reactions to occur
  4. stepwise sequence of elementary reactions by which a chemical change takes place
  5. States the absorptive capacity of a dissolved substance is directly proportional to its concentration in a solution
  6. Substance that increases the rate of the reaction without being consumed into the reaction
  7. The mathematical relationship between a reactions rate constant, activation energy, and temperature
  8. equation that relates the concentration of a reactant to elapsed time of a reaction
  9. reaction that proceeds at a rate that depends solely on one reactant
  10. time required for half of a reactant to be consumed
  11. Process where a solid hold molecules of a gas, liquid, or solute as a thin layer of film

22 Clues: proportionally constant in a rate law • the description of the rate of a reaction • the exponent of concentration in a rate law • Reaction that causes other reactions to occur • A catalyst that occurs in a biochemical reaction • slowest elementary reaction in a reaction mechanism • time required for half of a reactant to be consumed • ...

Camden's Chemistry Cross-Up 2012-03-28

Camden's Chemistry Cross-Up crossword puzzle
Across
  1. Substance that can donate one hydrogen ion
  2. First periodic table publisher
  3. Flour+Water
  4. Uses chemical symbols to represent the atoms of the elements
  5. Reaction in which energy is absorbed
  6. Pair of shared electrons between two atoms
  7. Scale in which acidity is measured
  8. Substance that increases the rate of a chemical reaction
  9. Indication of the amount of molecules that take part in a reaction
  10. Discoverer of the law of conservation of mass
  11. Mixture of metal and one or more other elements
  12. Substances present at the beginning of a chemical reaction
  13. Homogeneous mixture
Down
  1. Combination of protons and neutrons
  2. Reaction in which energy is released
  3. Substance that can accept one hydrogen ion
  4. Positively charged particle
  5. Producing of new substances by changing the way atoms are arranged
  6. Substances formed by a chemical reaction
  7. Solid product
  8. Group of atoms held together by covalent bonds

21 Clues: Flour+Water • Solid product • Homogeneous mixture • Positively charged particle • First periodic table publisher • Scale in which acidity is measured • Combination of protons and neutrons • Reaction in which energy is released • Reaction in which energy is absorbed • Substances formed by a chemical reaction • Substance that can donate one hydrogen ion • ...

Camden's Chemistry Cross-Up 2012-03-28

Camden's Chemistry Cross-Up crossword puzzle
Across
  1. Homogeneous mixture
  2. Substances present at the beginning of a chemical reaction
  3. Substances formed by a chemical reaction
  4. Combination of protons and neutrons
  5. Reaction in which energy is absorbed
  6. Producing of new substances by changing the way atoms are arranged
  7. Mixture of metal and one or more other elements
  8. Indication of the amount of molecules that take part in a reaction
  9. Substance that can accept one hydrogen ion
  10. Scale in which acidity is measured
  11. Positively charged particle
  12. Discoverer of the law of conservation of mass
Down
  1. Flour+Water
  2. Substance that increases the rate of a chemical reaction
  3. First periodic table publisher
  4. Solid product
  5. Substance that can donate one hydrogen ion
  6. Group of atoms held together by covalent bonds
  7. Uses chemical symbols to represent the atoms of the elements
  8. Pair of shared electrons between two atoms
  9. Reaction in which energy is released

21 Clues: Flour+Water • Solid product • Homogeneous mixture • Positively charged particle • First periodic table publisher • Scale in which acidity is measured • Combination of protons and neutrons • Reaction in which energy is absorbed • Reaction in which energy is released • Substances formed by a chemical reaction • Substance that can donate one hydrogen ion • ...

Chemistry Crossword 2015-11-17

Chemistry Crossword crossword puzzle
Across
  1. vertical column in the periodic table
  2. group 2 elements in the periodic table
  3. an abbreviation for atomic mass
  4. chemical reaction that occurs when oxygen reacts with a substance to form a new substance and give off energy
  5. substance that reacts with another substance in a chemical reaction to create a new substance with different properties
  6. neutral particle in the nucleus of an atom
  7. the sum of the number of protons and neutrons in an atom
  8. shiny, malleable, ductile element that conducts electricty
  9. pure substance formed when a non-metals combine
  10. pure substance formed when at least one metal and one non-metal combine
  11. slow chemical change that occurs when oxygen in the air reacts with a metal
  12. group 18 in the periodic table
  13. element that has both metallic and nonmetallic properties
Down
  1. dull,brittle element that does not conduct electricity
  2. chemical reaction that takes place in cells
  3. an atom that has become electrically charged because it has lost or gained electrons
  4. most reactive non-metals
  5. chemical reaction that absorbs energy
  6. chemical reaction that releases energy
  7. invisible negatively charged particle that orbits the nucleus of an atom
  8. the most reactive of the metals
  9. new substance produced in a chemical reaction between reactants
  10. positively charged particle in the nucleus of the atom
  11. an experiment in which all reactants and all products of a chemical reaction are accounted for
  12. horizontal row in the periodic table

25 Clues: most reactive non-metals • group 18 in the periodic table • the most reactive of the metals • an abbreviation for atomic mass • horizontal row in the periodic table • vertical column in the periodic table • chemical reaction that absorbs energy • group 2 elements in the periodic table • chemical reaction that releases energy • neutral particle in the nucleus of an atom • ...

Chemistry Unit 8 Crossword 2024-04-17

Chemistry Unit 8 Crossword crossword puzzle
Across
  1. if the reaction feels cold, heat is being ___
  2. classify: AB -> A + B
  3. in this type of chemical reaction, heat energy is absorbed
  4. if the reaction feels hot, heat is being ___
  5. a molecule of two of the same atom bonded together-has a 2 in the formula
  6. in this type of chemical reaction, heat energy is released
  7. classify: AB + C -> AC + B is which type of displacement?
Down
  1. classify: CxHy + O2 -> CO2 + H2O
  2. the phase change from gas to liquid
  3. classify: A + B -> AB
  4. a solid formed from mixing two aqueous solutions
  5. the change in heat energy in a chemical reaction
  6. the energy needed to start a chemical reaction is known as the ____ energy
  7. the end chemicals in a chemical reaction
  8. the starting chemicals in a chemical reaction
  9. classify: AB + CD -> AD + CB is which type of displacement?

16 Clues: classify: A + B -> AB • classify: AB -> A + B • classify: CxHy + O2 -> CO2 + H2O • the phase change from gas to liquid • the end chemicals in a chemical reaction • if the reaction feels hot, heat is being ___ • if the reaction feels cold, heat is being ___ • the starting chemicals in a chemical reaction • a solid formed from mixing two aqueous solutions • ...

Types of Chemical Reactions 2025-01-10

Types of Chemical Reactions crossword puzzle
Across
  1. A substance that does not dissolve in a solvent (typically water)
  2. A solid formed from a chemical reaction in a liquid solution
  3. A substance or energy that speeds up a chemical reaction without being consumed
  4. A reaction where two or more substances combine to form a new compound
  5. A reaction that absorbs energy (heat) from its surroundings
  6. An equation where the number of atoms for each element is not the same on both sides
  7. A substance formed as a result of a chemical reaction
  8. A small number written after an element symbol to indicate the number of atoms
Down
  1. A number placed before a compound formula to balance a chemical equation
  2. A reaction where one element replaces another element in a compound
  3. A reaction where two compounds are exchanged to for two new compounds
  4. A reaction where a compound breaks down into two or more simpler substances
  5. A reaction that releases energy (heat) to its surroundings
  6. A symbolic representation of a chemical reaction using element symbols
  7. A substance that can dissolve in a solvent (typically water)
  8. A starting substance in a chemical reaction required to yield a product
  9. A reaction where a substance reacts with oxygen to produce energy, carbon dioxide, and water

17 Clues: A substance formed as a result of a chemical reaction • A reaction that releases energy (heat) to its surroundings • A reaction that absorbs energy (heat) from its surroundings • A solid formed from a chemical reaction in a liquid solution • A substance that can dissolve in a solvent (typically water) • ...

Chemistry Crossword 2018-02-01

Chemistry Crossword crossword puzzle
Across
  1. A material that electric charge can move through easily
  2. Substance that reacts with another substance or substances in a chemical reaction to create new substances with different properties
  3. Pure substances formed as a result of the attraction between the particles of opposite charges called ions
  4. Chemical combination of two or more elements in a specific ratio
  5. An experiment in which all the reactants and all products of a chemical reaction are accounted for
  6. Is a chemical reaction that takes place in the cells in your body food (glucose) reacts with oxygen to produce energy, water and carbon dioxide.
  7. Speed of a chemical reaction
  8. Number of protons in the nucleus of one atom of an element
  9. Chemical reaction that occurs when oxygen reacts with a substance to form a new substance and give off energy
  10. Orbit of electrons around the nucleus of an atom
  11. Slow chemical change
  12. Group one elements in the periodic table. Not including hydrogen; the most reactive of the metals.
  13. Group 2 elements in the periodic table; their reactivity is not a strong as that of the alkali metals
  14. An experiment in which one or more products of chemical reaction can escape
Down
  1. Organic catalysts
  2. Combination of symbols that represent a compound; the formula identifies the elements in the compound and the amount of each element
  3. in a chemical reaction is always equal to the total mass of the products
  4. Substances that help a reaction proceed faster
  5. A reaction that takes place when two or more substances react to form new substances
  6. Mass of one atom of an element calculated from the total number of protons, neutrons and electrons of that atom; measured in atomic mass units (amu)
  7. change that results when 2 or more substances react to make a new substance
  8. Releases heat
  9. Absorbs heat
  10. Pure substance that cannot be broken down into other substances; substance made up of only one type of atom
  11. new substance produced in a chemical reaction between reactants
  12. Invisible negatively charged particle that orbits the nucleus of an atom

26 Clues: Absorbs heat • Releases heat • Organic catalysts • Slow chemical change • Speed of a chemical reaction • Substances that help a reaction proceed faster • Orbit of electrons around the nucleus of an atom • A material that electric charge can move through easily • Number of protons in the nucleus of one atom of an element • ...

Types Of Reactions-Hetu 10S 2025-05-01

Types Of Reactions-Hetu 10S crossword puzzle
Across
  1. A substance that undergoes change during a chemical reaction.
  2. A reaction in which one reactant is oxidized and another is reduced simultaneously.
  3. A reaction in which a single reactant breaks down into simpler products.
  4. The process in which a substance gains oxygen or loses hydrogen during a chemical reaction.
  5. A new substance formed as the result of a chemical reaction.
  6. A chemical reaction in which energy-heat- is absorbed from the surroundings.
  7. A reaction in which two or more reactants combine to form a single product.
  8. The oxidation of fats and oils in food, which causes them to become rancid – that is, to develop off-smells and tastes.
Down
  1. The chemical process by which metals are gradually degraded by reaction with substances like moisture or acids
  2. A reaction in which two compounds exchange ions to form two new compounds.
  3. A reaction in which an insoluble solid-precipitate-is formed when two aqueous solutions react.
  4. A concise symbolic representation of a chemical reaction, showing reactants and products with their formulas.
  5. A chemical reaction that releases heat to the surroundings as the products form.
  6. A reaction in which a more reactive element displaces another from its compound
  7. The process in which a substance loses oxygen or gains hydrogen during a chemical reaction.

15 Clues: A new substance formed as the result of a chemical reaction. • A substance that undergoes change during a chemical reaction. • A reaction in which a single reactant breaks down into simpler products. • A reaction in which two compounds exchange ions to form two new compounds. • A reaction in which two or more reactants combine to form a single product. • ...

Chemical Reactions Vocabulary 2025-12-11

Chemical Reactions Vocabulary crossword puzzle
Across
  1. a reaction in which two or more substances combine to form a new compound
  2. A state of balance
  3. a chemical reaction that occurs when a substance reacts with oxygen, releasing energy in the form of heat and light
  4. a reaction in which a single compound breaks down to form two or more simpler substances
  5. yield actual yield/theoretical yield x 100
  6. substance that speeds up the rate of a chemical reaction
  7. A number in front of a chemical formula in an equation that indicates how many molecules or atoms of each reactant and product are involved in a reaction.
  8. A solid that forms from a solution during a chemical reaction.
  9. a chemical change in which one element replaces a second element in a compound
  10. A chemical substance that is present at the start of a chemical reaction
Down
  1. reaction a chemical change that involves an exchange of positive ions between two compounds
  2. a chemical equation that does not indicate the relative amounts of reactants and products
  3. chemical equation with the same number of atoms of each element on both sides of the equation
  4. dissolved in water
  5. A substance produced in a chemical reaction

15 Clues: A state of balance • dissolved in water • yield actual yield/theoretical yield x 100 • A substance produced in a chemical reaction • substance that speeds up the rate of a chemical reaction • A solid that forms from a solution during a chemical reaction. • A chemical substance that is present at the start of a chemical reaction • ...

chapter-1(chemical reactions and equations) 2019-10-03

chapter-1(chemical reactions and equations) crossword puzzle
Across
  1. REACTIONS REACTIONS BY CHEMICALS
  2. corrosion reaction of metal with air and water
  3. Parts of a chemical reaction
  4. Parts of a chemical reacation
  5. reaction Two or more reactants combines to form products.
  6. reaction Reduction + oxidation
Down
  1. EQUATION REPRESENTATION OF A REACTION
  2. chemical equation Reaction with equal number of entities.
  3. reaction Heat required for reaction
  4. displacement
  5. Both the rectants displaces the other.
  6. reaction Heat released from reaction
  7. rancidity Change in food taste and odour

13 Clues: displacement • Parts of a chemical reaction • Parts of a chemical reacation • reaction Reduction + oxidation • REACTIONS REACTIONS BY CHEMICALS • reaction Heat required for reaction • reaction Heat released from reaction • EQUATION REPRESENTATION OF A REACTION • Both the rectants displaces the other. • rancidity Change in food taste and odour • ...

Unit 9 Review Kinetics & Equilibrium 2023-04-25

Unit 9 Review Kinetics & Equilibrium crossword puzzle
Across
  1. increasing the ____ will increase the number of particles in a given area thus creating more collisions
  2. the release of energy in order to form bonds in a chemical reaction
  3. the change in energy between the products and reactants of a chemical reaction
  4. the total amount of energy needed to complete a reaction
  5. the amount of added energy needed for a chemical reaction to occur
  6. ______ states that if an equilibrium is disturbed by certain conditions, a shift will occur to bring the reaction back to equilibrium
  7. to increase reaction rates you can increase the __ __ of a substance by crushing or grinding
  8. increasing the ___ will increase the movement of the particles thus creating more collisions to occur
Down
  1. the set of principles that states that reacting particles can form products if 3 conditions are met
  2. the absorption of energy in order to break bonds in a chemical reaction
  3. energy stored in the chemical bonds of a substance
  4. the measure of disorder/randomness of a process
  5. the capacity for doing work or supplying heat
  6. when the rate of the forward reaction equals the rate of the reverse reaction
  7. the measure of heat flow in a process
  8. a ______ provides an alternative pathway and speeds up a reaction by lowering the activated complex
  9. the amount of energy the reactants of a reaction start with
  10. a factor affecting rate of reactions that involves that smallest amount of bond arrangements
  11. a factor that will increase reaction rates only if both reactants are gases
  12. the amount of energy the products of a reaction ends with

20 Clues: the measure of heat flow in a process • the capacity for doing work or supplying heat • the measure of disorder/randomness of a process • energy stored in the chemical bonds of a substance • the total amount of energy needed to complete a reaction • the amount of energy the products of a reaction ends with • ...

Stoichiometry Concepts 2024-04-01

Stoichiometry Concepts crossword puzzle
Across
  1. Unit that represent an amount of substance in a chemical reaction.
  2. Calculating chemical reactions using balanced equations.
  3. Number written below a number in a chemical equation.
  4. Equation where the number of atoms is the same on both sides.
  5. The process where substances get transformed into a new substances.
  6. Number of atoms or molecules in 1 mole.
Down
  1. Numbers in front of formulas.
  2. Representation of a chemical reaction using formulas.
  3. Reactant that are left/remain after the limiting reactant gets consumed.
  4. New substances created because of a chemical reaction.
  5. Reactant that get completely consumed during a reaction.
  6. Ratio of masses in a substances in a chemical reaction.
  7. Substances that undergo change in a chemical reaction.
  8. Mass of 1 mole of a substance in grams (g).
  9. Ratio of moles in a substance to another.

15 Clues: Numbers in front of formulas. • Number of atoms or molecules in 1 mole. • Ratio of moles in a substance to another. • Mass of 1 mole of a substance in grams (g). • Representation of a chemical reaction using formulas. • Number written below a number in a chemical equation. • New substances created because of a chemical reaction. • ...

Chemicals and their reactions 2011-12-11

Chemicals and their reactions crossword puzzle
Across
  1. combustion /a combustion reaction of hydrocarbons that uses all the available fuel and produces only carbon dioxide, water and energy
  2. steel/_______ is steel that has been coated with a thin layer of zinc
  3. displacement reaction /_____________ occurs when two elements in different compounds trade places.
  4. /______ are the substances that are produced during the reaction
  5. /the rapid reaction of a substance with oxygen to produce oxides and energy
  6. /a solid formed from the reaction of two solutions
  7. /a chemical, present at the start of a chemical reaction, that i used up during the reaction
  8. reaction/a reaction in which two reactants combine to make a larger or more complex product
Down
  1. equation/a way of describing a chemical reaction using the chemical formulas of the reactants and products
  2. displacement reaction/in a ___________ one element displaces or replaces and element in a compound
  3. /the breakdown of a metal resulting from reactions with chemicals in its environment
  4. combustion/occurs when there is only limited amount of oxygen,
  5. reaction/the general patter for this reaction is: AB-A+B
  6. symbol/a symbol indicating the physical state of the chemical at room temperature
  7. equation/in a _______ the names of the chemicals are written out in full
  8. of conservation of mass/the statement that, in any given chemical reaction, teh total mass of the reactants equals the total mass of the products.

16 Clues: /a solid formed from the reaction of two solutions • reaction/the general patter for this reaction is: AB-A+B • combustion/occurs when there is only limited amount of oxygen, • /______ are the substances that are produced during the reaction • steel/_______ is steel that has been coated with a thin layer of zinc • ...

Gaudet_OPTIONAL BONUS POINT OPPORTUNITY FOR U5S1 KINETICS & HESS'S LAW 2022-02-03

Gaudet_OPTIONAL BONUS POINT OPPORTUNITY FOR U5S1 KINETICS & HESS'S LAW crossword puzzle
Across
  1. a reaction in which products are produced from reactants and it goes from left to right in a reversible reaction
  2. any chemical reaction that exerts heat into it's environment
  3. the movement of one or more components of a mixture to improve contact
  4. any chemical substance produced during the conversion of some reactant to a product
  5. the minimum amount of energy that is required to activate atoms or molecules to a condition in which they can undergo chemical transformation or physical transport.
  6. used to relate the free energy changes that occur during the progress of chemical processes to the rate and equilibrium constants of the process
  7. any substance that increases the rate of a reaction without itself being consumed
  8. a reaction in which the conversion of reactants to products and the conversion of products to reactants occur simultaneously
  9. a substance that slows down a chemical or corrosion reaction
Down
  1. any chemical reaction that absorbs heat from its environment.
  2. the study of how fast chemical reactions proceed from reactants to products
  3. the sum of the internal energy and the product of the pressure and volume of a thermodynamic system.
  4. the area of the chemical substances used in a chemical reaction
  5. the speed at which a chemical reaction proceeds
  6. the average kinetic energy of all the atoms or molecules of that substance
  7. states that the overall change in enthalpy for a chemical reaction is equal to the sum of the enthalpy changes for each step

16 Clues: the speed at which a chemical reaction proceeds • any chemical reaction that exerts heat into it's environment • a substance that slows down a chemical or corrosion reaction • any chemical reaction that absorbs heat from its environment. • the area of the chemical substances used in a chemical reaction • ...

Prerequisite Information - Materials 2025-07-18

Prerequisite Information - Materials crossword puzzle
Across
  1. A row in the periodic table where elements have the same number of electron shells
  2. A separation method that removes solids from liquids based on particle size
  3. Elements on the right side of the periodic table that tend to gain electrons
  4. A column in the periodic table with elements that share outer electron numbers
  5. A positively charged particle found in the nucleus
  6. A subatomic particle with no charge found in the nucleus
  7. A basic building block of matter
  8. A combination of substances not chemically bonded together
  9. A type of change that creates a new substance with different properties
  10. A way of describing a chemical reaction using words or symbols
  11. The new substances formed in a chemical reaction
  12. A solid that forms from a chemical reaction in a solution
Down
  1. An energy level that holds electrons in an atom
  2. A process that separates liquids by their boiling points
  3. A process where substances change into new substances
  4. Emission of this may indicate a chemical change (e.g. burning)
  5. A change in this can indicate energy being released or absorbed in a reaction
  6. A sign of a chemical change, often seen as bubbles or fizzing
  7. Elements on the left side of the periodic table that tend to lose electrons
  8. A negatively charged particle found in electron shells
  9. An indicator of a chemical reaction involving a permanent change in appearance
  10. The starting substances in a chemical reaction

22 Clues: A basic building block of matter • The starting substances in a chemical reaction • An energy level that holds electrons in an atom • The new substances formed in a chemical reaction • A positively charged particle found in the nucleus • A process where substances change into new substances • A negatively charged particle found in electron shells • ...

8th grade topic 9 Chemical Reactions 2024-12-08

8th grade topic 9 Chemical Reactions crossword puzzle
Across
  1. a mixture that is the same throughout
  2. ___ energy is the minimum amount of energy needed for a reaction to take place
  3. the scattering of light as it passes through a colloid is called the ___ __
  4. long chains of molecules made of repeating units called monomers - examples are plastics and wool
  5. a solid may form when 2 liquids react, it is called this, a ___
  6. in this type of chemical reaction system, the environment can influence the reaction, or matter can enter and escape from the reaction
  7. the things that are produced in a chemical reaction
  8. a mixture containing small undissolved particles that do not settle out- they may be too small to see, but they can scatter light.
  9. what gets dissolved in a solution
  10. these are examples of synthetic foods- they are added too food to make them last longer
  11. you can put chemical inhibitors called ___ onto food to keep them from decaying
  12. all the atoms of each element reacting in a chemical equation must ___ the number of atoms that are being produced.
  13. the measure of how much solute can dissolve in a solvent at a given temperature
  14. in this type of reaction system, the reaction is contained, matter cannot enter or exit
  15. the amount of __ in a given volume is concentration
  16. if a solution is _______ then it contains more solute than a saturated one. Solution is unstable and may form crystals
  17. a compound that prevents or slows down a chemical reaction
  18. this type of reaction takes simple things and combines them to make them more complex
  19. in this type of reaction, one substance changes places with another
  20. a chemical ___ shows the number of chemicals and how they react to form now substances
  21. these are catalysts in our body that speed up chemical reactions
  22. a ___ change is one in which the appearance of the matter changes, it does not change what it is
  23. this number in front of a compound in a chemical equation tells you how many molecules of that compound there are
  24. the Law of ___ __ ___ states matter cannot be created nor destroyed, only changed
  25. these/this is any compound that is reacting, it is on the left side of the arrow in a chemical equation
  26. a mixture that you can see the separate parts
  27. salt and water are considered ___ ___ because they have fixed chemical compositions
Down
  1. Material made up of 2 or more substances that can be separated by physical means
  2. crushing or breaking something up will increase the __ __ of the substance and allow more surfaces for the reaction to take place
  3. in this type of reaction, one complex compound will break down into simpler ones
  4. if a solution is _________ then it is able to dissolve more solute at a given temp
  5. in this type of reaction, positive ions of both compound switch places
  6. if a solution is __________ then contains all the solute it can at a given temp
  7. a compound that speeds up a chemical reaction without itself being consumed
  8. when determining if something will dissolve something else it is helpful to remember the phrase “___ ____ ____”
  9. separating a mixture by heating so that the part that has a lower boiling point will evaporate first, then it is collected while the gas cools and condenses
  10. this small number following an element’s symbol in a chemical equation tells you how many atoms of that element are present in the reaction
  11. if chemicals change ___, it may indicate a chemical reaction has taken place
  12. material made by humans and are not natural are called __________
  13. adding water or another solvent to a solution will ____ the mixture and could slow down the reaction
  14. if this (tiny bubbles) are produced during a reaction, it may indicate a chemical reaction
  15. type of reaction that gives off energy
  16. a chemical reaction occurs when existing chemical ___ are broken and new ones may be made
  17. the arrow in a chemical equation means this word
  18. a mixture where particles can be seen and separated by settling or filtration.
  19. type of reaction that absorbs energy as it happens
  20. a ___ change occurs when a new substance is created
  21. what does the dissolving In a solution
  22. increasing this will cause particles to move faster and will increase the reaction rate, lowering it will decrease the rate

49 Clues: what gets dissolved in a solution • a mixture that is the same throughout • type of reaction that gives off energy • what does the dissolving In a solution • a mixture that you can see the separate parts • the arrow in a chemical equation means this word • type of reaction that absorbs energy as it happens • the things that are produced in a chemical reaction • ...

8th grade topic 9 Chemical Reactions 2024-12-08

8th grade topic 9 Chemical Reactions crossword puzzle
Across
  1. this small number following an element’s symbol in a chemical equation tells you how many atoms of that element are present in the reaction
  2. if a solution is _________ then it is able to dissolve more solute at a given temp
  3. a mixture where particles can be seen and separated by settling or filtration.
  4. salt and water are considered ___ ___ because they have fixed chemical compositions
  5. a solid may form when 2 liquids react, it is called this, a ___
  6. if chemicals change ___, it may indicate a chemical reaction has taken place
  7. what does the dissolving In a solution
  8. the measure of how much solute can dissolve in a solvent at a given temperature
  9. material made by humans and are not natural are called __________
  10. a mixture that you can see the separate parts
  11. in this type of reaction system, the reaction is contained, matter cannot enter or exit
  12. adding water or another solvent to a solution will ____ the mixture and could slow down the reaction
  13. long chains of molecules made of repeating units called monomers - examples are plastics and wool
  14. Material made up of 2 or more substances that can be separated by physical means
  15. the Law of ___ __ ___ states matter cannot be created nor destroyed, only changed
  16. these/this is any compound that is reacting, it is on the left side of the arrow in a chemical equation
  17. all the atoms of each element reacting in a chemical equation must ___ the number of atoms that are being produced.
  18. this number in front of a compound in a chemical equation tells you how many molecules of that compound there are
  19. the things that are produced in a chemical reaction
  20. these are examples of synthetic foods- they are added too food to make them last longer
  21. a compound that speeds up a chemical reaction without itself being consumed
  22. type of reaction that gives off energy
Down
  1. if this (tiny bubbles) are produced during a reaction, it may indicate a chemical reaction
  2. this type of reaction takes simple things and combines them to make them more complex
  3. in this type of reaction, positive ions of both compound switch places
  4. in this type of reaction, one substance changes places with another
  5. a compound that prevents or slows down a chemical reaction
  6. ___ energy is the minimum amount of energy needed for a reaction to take place
  7. the scattering of light as it passes through a colloid is called the ___ __
  8. a mixture that is the same throughout
  9. in this type of reaction, one complex compound will break down into simpler ones
  10. when determining if something will dissolve something else it is helpful to remember the phrase “___ ____ ____”
  11. what gets dissolved in a solution
  12. a ___ change is one in which the appearance of the matter changes, it does not change what it is
  13. if a solution is _______ then it contains more solute than a saturated one. Solution is unstable and may form crystals
  14. in this type of chemical reaction system, the environment can influence the reaction, or matter can enter and escape from the reaction
  15. if a solution is __________ then contains all the solute it can at a given temp
  16. type of reaction that absorbs energy as it happens
  17. separating a mixture by heating so that the part that has a lower boiling point will evaporate first, then it is collected while the gas cools and condenses
  18. a chemical reaction occurs when existing chemical ___ are broken and new ones may be made
  19. crushing or breaking something up will increase the __ __ of the substance and allow more surfaces for the reaction to take place
  20. a ___ change occurs when a new substance is created
  21. a chemical ___ shows the number of chemicals and how they react to form now substances
  22. a mixture containing small undissolved particles that do not settle out- they may be too small to see, but they can scatter light.
  23. these are catalysts in our body that speed up chemical reactions
  24. the amount of __ in a given volume is concentration
  25. you can put chemical inhibitors called ___ onto food to keep them from decaying
  26. increasing this will cause particles to move faster and will increase the reaction rate, lowering it will decrease the rate
  27. the arrow in a chemical equation means this word

49 Clues: what gets dissolved in a solution • a mixture that is the same throughout • what does the dissolving In a solution • type of reaction that gives off energy • a mixture that you can see the separate parts • the arrow in a chemical equation means this word • type of reaction that absorbs energy as it happens • a ___ change occurs when a new substance is created • ...

Kenzie Schmidt Science Ch.13 2017-02-23

Kenzie Schmidt Science Ch.13 crossword puzzle
Across
  1. In this type of chemical reaction there is almost always an explosion and oxides are created
  2. This goes on the x axis of a reaction graph (2 words)
  3. this goes on the y axis of reaction graphs
  4. What must always be balanced? (2 words)
  5. In this type of chemical reaction the formula shrinks (AB -> A+B)
  6. In this type of chemical reaction the formula grows (A+B -> AB)
  7. When there is a net absorption of energy in the reaction (2 words)
Down
  1. The amount of energy required to pull 2 bonded atoms apart which is the same as the amount of energy released when they are brought together (2 words)
  2. When there is a net release of energy in the reaction (2 words)
  3. The energy it takes for the chemical reaction to get started (2 words)
  4. In this chemical reaction one element "changes teams" (2 words)
  5. In this chemical reaction, 2 elements "change teams" (2 words)
  6. The rule that no atoms are gained or lost during any reaction (4 words)
  7. When balancing chemical equations what can never be changed?
  8. Change in color is a clue of what type of reaction?

15 Clues: What must always be balanced? (2 words) • this goes on the y axis of reaction graphs • Change in color is a clue of what type of reaction? • This goes on the x axis of a reaction graph (2 words) • When balancing chemical equations what can never be changed? • In this chemical reaction, 2 elements "change teams" (2 words) • ...

Chapter 2 Terms 2013-08-15

Chapter 2 Terms crossword puzzle
Across
  1. Measurement of acidity.
  2. Substances that decreases activation energy and increases reaction rate in a chemical reaction.
  3. Reactant in a chemical reaction upon which an enzyme acts.
  4. Reaction Process by which substances turn into different substances through the making and breaking of chemical bonds.
  5. Atom that has gained or lost one or more electron(s).
  6. Molecule made of carbon of carbon , hydrogen, and oxygen; includes starches and sugars.
  7. Compound that takes up a proton (H+) when dissolved in a solution.
  8. Bond Chemical Bond formed between oppositely charged ions.
  9. Acid Molecule that makes up proteins.
  10. Molecular subunit of a polymer.
  11. Non-polar molecule made up of carbon, hydrogen, and oxygen. Includes fats and oils.
  12. Acid Hydrocarbon chain often bonded to glycerol in a lipid.
  13. Two or more atoms held together by covalent bonds, not necessarily a compound.
  14. Bound Attraction between a slightly positive hydrogen atom and slightly negative hydrogen atom.
  15. Substance that dissolves in a solvent and is present at a lower concentration than the solvent.
Down
  1. Substance formed by a chemical reaction.
  2. Substance in which solutes dissolve and that is present in greatest concentration in a solution.
  3. Acid Polymer of nucleotides; the genetic material of organisms.
  4. Polymer made up of amino acids linked by peptide bonds.
  5. Bond Chemical bond formed when two atoms share one or more pairs of electrons.
  6. Energy Amount of energy needed to break a bond between two particular atoms.
  7. Chemical reaction that yields a net release of energy in the form of heat.
  8. Chemical reaction that requires a net input of energy.
  9. Substances that gives a proton (H+) when dissolved in a solution.
  10. Attractions between molecules of different substances.
  11. Attraction between molecules of the same substance.
  12. Energy The lowest amount of energy needed to start a chemical reaction.
  13. Condition in which reactants and products of a chemical reaction are formed at the same rate.
  14. Large, Carbon based molecule formed by the smaller sub units called monomers.
  15. Smallest basic unit of matter
  16. Substance made of different elements that are bonded together in a set ratio
  17. Mixture that is consistent throughout; also called homogeneous mixture.
  18. Protein that catalyzes chemical reactions in organisms.
  19. Substance that is changed by a chemical reaction.
  20. Substance made of only one type of atom that cannot be broken down by chemical means.

35 Clues: Measurement of acidity. • Smallest basic unit of matter • Molecular subunit of a polymer. • Acid Molecule that makes up proteins. • Substance formed by a chemical reaction. • Substance that is changed by a chemical reaction. • Attraction between molecules of the same substance. • Atom that has gained or lost one or more electron(s). • ...

Chapter 2 Terms 2013-08-13

Chapter 2 Terms crossword puzzle
Across
  1. Measurement of acidity.
  2. Acid Hydrocarbon chain often bonded to glycerol in a lipid.
  3. Substance that is changed by a chemical reaction.
  4. Bond Chemical bond formed when two atoms share one or more pairs of electrons.
  5. Bond Chemical Bond formed between oppositely charged ions.
  6. Reactant in a chemical reaction upon which an enzyme acts.
  7. Acid Polymer of nucleotides; the genetic material of organisms.
  8. Compound that takes up a proton (H+) when dissolved in a solution.
  9. Substance made of only one type of atom that cannot be broken down by chemical means.
  10. Molecule made of carbon of carbon , hydrogen, and oxygen; includes starches and sugars.
  11. Condition in which reactants and products of a chemical reaction are formed at the same rate.
  12. Energy The lowest amount of energy needed to start a chemical reaction.
  13. Mixture that is consistent throughout; also called homogeneous mixture.
  14. Two or more atoms held together by covalent bonds, not necessarily a compound.
  15. Substance formed by a chemical reaction.
  16. Substance made of different elements that are bonded together in a set ratio
Down
  1. Bound Attraction between a slightly positive hydrogen atom and slightly negative hydrogen atom.
  2. Acid Molecule that makes up proteins.
  3. Substances that gives a proton (H+) when dissolved in a solution.
  4. Chemical reaction that yields a net release of energy in the form of heat.
  5. Substances that decreases activation energy and increases reaction rate in a chemical reaction.
  6. Large, Carbon based molecule formed by the smaller sub units called monomers.
  7. Molecular subunit of a polymer.
  8. Substance that dissolves in a solvent and is present at a lower concentration than the solvent.
  9. Chemical reaction that requires a net input of energy.
  10. Substance in which solutes dissolve and that is present in greatest concentration in a solution.
  11. Reaction Process by which substances turn into different substances through the making and breaking of chemical bonds.
  12. Energy Amount of energy needed to break a bond between two particular atoms.
  13. Protein that catalyzes chemical reactions in organisms.
  14. Polymer made up of amino acids linked by peptide bonds.
  15. Atom that has gained or lost one or more electron(s).
  16. Attraction between molecules of the same substance.
  17. Attractions between molecules of different substances.
  18. Smallest basic unit of matter
  19. Non-polar molecule made up of carbon, hydrogen, and oxygen. Includes fats and oils.

35 Clues: Measurement of acidity. • Smallest basic unit of matter • Molecular subunit of a polymer. • Acid Molecule that makes up proteins. • Substance formed by a chemical reaction. • Substance that is changed by a chemical reaction. • Attraction between molecules of the same substance. • Atom that has gained or lost one or more electron(s). • ...

Chemistry 2025-04-28

Chemistry crossword puzzle
Across
  1. A chemical change with the release of heat
  2. Displacement A reaction involving exchange of ions between two compounds
  3. Equation The symbolic representation of a chemical reaction
  4. The chemical used to test the presence of carbon dioxide
  5. The brown coating formed on iron due to corrosion
  6. Substance that speeds up a chemical reaction without being consumed
  7. Removal of oxygen or addition of hydrogen to a substance
  8. Reaction involving addition of oxygen or removal of hydrogen
  9. Reaction where two or more substances combine to form a single product
Down
  1. An insoluble solid formed during a double displacement reaction
  2. Reaction where a more reactive element displaces a less reactive one
  3. Reaction absorbing heat from surroundings
  4. Formation of a solid during a chemical reaction in solution
  5. The process of a substance combining with oxygen to release heat and light
  6. Reaction where a compound breaks down into two or more substances

15 Clues: Reaction absorbing heat from surroundings • A chemical change with the release of heat • The brown coating formed on iron due to corrosion • The chemical used to test the presence of carbon dioxide • Removal of oxygen or addition of hydrogen to a substance • Formation of a solid during a chemical reaction in solution • ...

Brandon Glass 2019-06-14

Brandon Glass crossword puzzle
Across
  1. Atoms that give away or accept electrons from another in order to follow the octet rule
  2. Atoms or groups of atoms with a charge
  3. a starting substance in a chemical reaction.
  4. A reaction that involves an exchange of positive ions between two compounds.
  5. a group of atoms bonding together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction
  6. Has negative charged ions
  7. The symbol that separates the reactants from the products of a chemical reaction is?
  8. A symbolic representation of a chemical reaction in a form of symbols and formulas
  9. a whole number that appears before a formula in an equation.
  10. Has positive charged ions, formed when electrons are lost
  11. water,mercury,vegetable oil, ethanol.
Down
  1. A reaction in which a single compound is broken down into simpler substances.
  2. A reaction in which oxygen reacts with another substance,often producing carbon dioxide and water
  3. has a definite shape and volume
  4. A pair of electrons is shared between two atoms
  5. an equation in which each side has the same number of atoms of each element.
  6. when the energy level contain a full 8 electrons
  7. Bonds form to make atoms "happy"
  8. water turning into mist
  9. A reaction in which the atoms of one element replace the atoms of a second element
  10. electrons move in definite "orbit"
  11. a new substance formed in a chemical reaction.

22 Clues: water turning into mist • Has negative charged ions • has a definite shape and volume • Bonds form to make atoms "happy" • electrons move in definite "orbit" • water,mercury,vegetable oil, ethanol. • Atoms or groups of atoms with a charge • a starting substance in a chemical reaction. • a new substance formed in a chemical reaction. • ...

Bonds & Reactions 2025-02-11

Bonds & Reactions crossword puzzle
Across
  1. the least reactive group of elements
  2. the same thing as a hydrogen ion
  3. attractive forces between molecules
  4. the building blocks of matter
  5. burning; a reaction with O2
  6. elements with properties in between metals and nonmetals
  7. A chemical that releases hydrogen ions (H+) when dissolved in water
  8. a charged atom
  9. the little numbers within a chemical formula
  10. the meaning of the delta symbol (triangle) above the arrow
  11. an atoms outermost electrons
  12. the bond between a metal atom and a nonmetal atom
  13. the substances that you produce in a chemical reaction
Down
  1. ___________ ions are made of more than one atom covalently bonded together
  2. atoms are not created or _________ during chemical reactions
  3. the most reactive group of metals
  4. a substance added to a chemical reaction to increase the reaction rate
  5. the bond between two nonmetal atoms
  6. molecules where the charge isn’t spread out equally
  7. the substances that you start with in a chemical reaction
  8. the type of reaction where a compound breaks down into simpler substances
  9. the bond between two metal atoms
  10. the most reactive group of nonmetals
  11. the type of reaction where two substances are combined to make a new substance
  12. the large numbers in front of each formula in a reaction equation
  13. a group of atoms covalently bonded together
  14. the diatomic elements

27 Clues: a charged atom • the diatomic elements • burning; a reaction with O2 • an atoms outermost electrons • the building blocks of matter • the same thing as a hydrogen ion • the bond between two metal atoms • the most reactive group of metals • the bond between two nonmetal atoms • attractive forces between molecules • the least reactive group of elements • ...

8.4 - Chemical Bonds & Equations 2021-12-12

8.4 - Chemical Bonds & Equations crossword puzzle
Across
  1. A mathematical model that displays the number of atoms of each element that form a chemical compound is called a chemical ___.
  2. If the total energy required to break bonds in the reactants is ___ than the total energy released when the new bonds are formed in the products, the reaction is endothermic.
  3. ___ ___ do not normally form bonds because they have a full set of valence electrons.
  4. In a chemical ___, a substance is changed to a new substance with different properties.
  5. If the total energy required to break bonds in the reactants is ___ than the total energy released when the new bonds are formed in the products, the reaction is exothermic.
  6. In a chemical equation, the ___ are written on the right.
  7. Nonmetals tend to gain electrons in chemical reactions, forming ___ ions.
  8. In a chemical equation, the ___ are written on the left.
  9. Metals tend to lose electrons in chemical reactions, forming ___ ions.
  10. Compounds consist of two or more elements that are ___ combined in a fixed ratio.
  11. In a chemical formula, the ___ tells you the number of molecules of the compound.
  12. We use coefficients to ___ chemical equations because the mass of the reactants must equal the mass of the products.
Down
  1. In a chemical equation a(n) ___ indicates a change to new substances.
  2. A chemical ___ describes a chemical reaction with symbols and formulas.
  3. In ionic bonding, atoms ___ electrons.
  4. The Law of Conservation of Matter states that regardless of how substances in a closed system are changed, the total ___ remains the same.
  5. A burning match is an example of a(n) ___ reaction.
  6. In an exothermic reaction, energy is ___.
  7. Melting ice is an example of a(n) ___ process.
  8. In ___ bonding, two nonmetals react.
  9. In a chemical formula, a(n) ___ tells you the number of atoms of the element to the left.
  10. In an endothermic reaction, energy is ___.
  11. In covalent bonding, atoms ___ electrons.
  12. In ___ bonding, a metal reacts with a nonmetal.

24 Clues: In ___ bonding, two nonmetals react. • In ionic bonding, atoms ___ electrons. • In an exothermic reaction, energy is ___. • In covalent bonding, atoms ___ electrons. • In an endothermic reaction, energy is ___. • Melting ice is an example of a(n) ___ process. • In ___ bonding, a metal reacts with a nonmetal. • A burning match is an example of a(n) ___ reaction. • ...

Science - Chapter 1 2023-09-18

Science - Chapter 1 crossword puzzle
Across
  1. a material that increases the rate of a reaction by lowering the activation energy
  2. the study of the properties of matter and how matter changes
  3. a combination of symbols that represent the elements in a compound
  4. a well-mixed mixture
  5. type of chemical reaction where two or more substances (elements or compounds) combine to make a more complex substance
  6. a reaction that absorbs energy in the form of heat
  7. a particle made of two or more atoms bonded together
  8. a number in front of a chemical formula that tells how many atoms or molecules of each reactant are present
  9. type of chemical reaction where reactant(s) are broken down into simpler products
  10. the amount of one material in a given volume of another material
  11. a material that releases energy when it burns
  12. a shorter, easier way to show chemical reactions using symbols instead of words
Down
  1. fire requires fuel, oxygen, and _____.
  2. the materials you have after a chemical reaction has occurred
  3. a solid that forms from solution during a chemical reaction
  4. numbers that show the number of atoms of an element in a molecule or the ratio of elements in a compound
  5. a reaction that releases energy in the form of heat
  6. a substance that cannot be broken down into any other substances by chemical or physical means
  7. biological catalysts that provide a surface on which reactions take place
  8. _______ of mass - matter cannot be created or destroyed. Total mass of the reactants must equal the total mass of the products
  9. a change that alters the form or appears of a material but does not convert the material into new substances
  10. (in chemistry) one or two letter set of characters used to identify an element
  11. a material that decreases the rate of a reaction
  12. the minimum amount of energy needed to start a chemical reaction
  13. type of chemical reaction where one element replaces another in a compound or two elements in different compounds trade places
  14. a change in matter that forms one or more new substances
  15. substance made of two or more elements chemically combined in a specific ratio
  16. the materials you have at the beginning of a chemical reaction
  17. a rapid reaction between oxygen and a fuel - results in fire.
  18. anything that has mass and takes up space
  19. two or more pure substances (elements, compounds, or both) that are in the same place but are not chemically combined

31 Clues: a well-mixed mixture • fire requires fuel, oxygen, and _____. • anything that has mass and takes up space • a material that releases energy when it burns • a material that decreases the rate of a reaction • a reaction that absorbs energy in the form of heat • a reaction that releases energy in the form of heat • a particle made of two or more atoms bonded together • ...

Y8 Chemical Reactions 2023-10-17

Y8 Chemical Reactions crossword puzzle
Across
  1. Not transparent; does not allow light to pass through.
  2. Harmful or poisonous to living organisms.
  3. Can be drawn into a wire without breaking.
  4. Resistant to indentation or scratching.
  5. Ability to ignite and sustain combustion.
  6. Prone to chemically reacting with other substances.
  7. Properties - Characteristics related to appearance and state.
  8. Initial substances on the left in a chemical equation.
  9. Represents a chemical reaction using symbols and formulas.
  10. Shift in heat as a signal of chemical change.
  11. Speeds up a reaction but is not consumed.
  12. Easily ignited and capable of burning.
  13. Capable of bending without breaking.
Down
  1. Notations for solid, liquid, gas, and aqueous.
  2. Alteration in hue as a sign of a chemical change.
  3. Properties - Characteristics related to chemical reactions.
  4. Chemical reaction involving metal, oxygen, and often water.
  5. Solid formed in a chemical reaction.
  6. Solid formed when reactants combine in a solution.
  7. Capable of causing gradual damage or erosion.
  8. Allows some light to pass but scatters it.
  9. Observable signs to identify physical and chemical changes.
  10. Resulting substances on the right in a chemical equation.
  11. Can be shaped or molded without breaking.
  12. A substance that speeds up a chemical reaction.
  13. Emission of gas as evidence of a chemical change.
  14. Signifies "reacts to produce."

27 Clues: Signifies "reacts to produce." • Solid formed in a chemical reaction. • Capable of bending without breaking. • Easily ignited and capable of burning. • Resistant to indentation or scratching. • Harmful or poisonous to living organisms. • Ability to ignite and sustain combustion. • Can be shaped or molded without breaking. • Speeds up a reaction but is not consumed. • ...

Chemical Reaction 2025-01-20

Chemical Reaction crossword puzzle
Across
  1. states that reacting particles must collide with enough energy for a reaction to occur
  2. reaction involving oxidation and reduction
  3. number given to an element that shows if it has lost or gained electrons
  4. a substance that speeds up a chemical reaction without being changed in the process
Down
  1. is a substance that oxidises another substance and itself reduced
  2. the sum of oxidation numbers in a compound
  3. measure of how fast a reaction takes place
  4. chemical reaction where a substance reacts with oxygen
  5. is a substance that reduces other substance and itself oxidised
  6. a change in which a new substance is formed

10 Clues: the sum of oxidation numbers in a compound • measure of how fast a reaction takes place • reaction involving oxidation and reduction • a change in which a new substance is formed • chemical reaction where a substance reacts with oxygen • is a substance that reduces other substance and itself oxidised • ...

Science Vocabulary 6 2023-11-02

Science Vocabulary 6 crossword puzzle
Across
  1. numbers that appear before a formula in a chemical equation to show the relative proportions of each reactant and product
  2. new substances formed as a result of a chemical reaction
  3. a chemical bond in which two atoms share a pair of valence electrons
  4. the force that holds cations and anions together
  5. the force that holds atoms or ions together as a unit
  6. a mixture of two or more elements, at least one of which is a metal, that has the characteristic properties of a metal
  7. a chemical reaction in which two compounds exchange positive ions and form new compounds
  8. a neutral group of atoms that are joined together by one or more covalent bonds
  9. an ion with a positive charge
  10. a representation of a chemical reaction in which the reactants and products are expressed as formulas
  11. a substance that undergoes change in a chemical reaction
  12. a chemical reaction in which two or more substances react to form a single substance
Down
  1. a chemical reaction in which a compound breaks down into two or more simpler substances
  2. a diagram of an atom, ion or molecule in which each dot represents a valence electron
  3. notation that shows what elements a compound contains and the ratio of the atoms or ions of these elements in the compound
  4. a chemical reaction in which one element takes the place of another element in a compound
  5. the energy stored in chemical bonds
  6. an ion with a negative charge
  7. the attraction between a metal cation and the shared electrons that surround it
  8. an atom or group of atoms that has a positive or negative charge

20 Clues: an ion with a negative charge • an ion with a positive charge • the energy stored in chemical bonds • the force that holds cations and anions together • the force that holds atoms or ions together as a unit • new substances formed as a result of a chemical reaction • a substance that undergoes change in a chemical reaction • ...

Ch 6+7 vocab 2023-11-03

Ch 6+7 vocab crossword puzzle
Across
  1. - the force that holds cations and anions together
  2. - the force that holds atoms or ions together as a unit
  3. - a chemical reaction in which two compounds exchange positive ions and form new compounds
  4. - a neutral group of atoms that are joined together by one or more covalent bonds
  5. - the attraction between a metal cation and the shared electrons that surround it
  6. - new substances formed as a result of a chemical reaction
  7. - a chemical bond in which two atoms share a pair of valence electrons
  8. - an atom or group of atoms that has a positive or negative charge
  9. - a substance that undergoes change in a chemical reaction
  10. - an ion with a negative charge
  11. - the energy stored in chemical bonds
  12. - a chemical reaction in which two or more substances react to form a single substance
Down
  1. - notation that shows what elements a compound contains and the ratio of the atoms or ions of these elements in the compound
  2. - a chemical reaction in which a compound breaks down into two or more simpler substances
  3. - a chemical reaction in which one element takes the place of another element in a compound
  4. - numbers that appear before a formula in a chemical equation to show the relative proportions of each reactant and product
  5. - a representation of a chemical reaction in which the reactants and products are expressed as formulas
  6. - a diagram of an atom, ion or molecule in which each dot represents a valence electron
  7. - an ion with a positive charge
  8. - a mixture of two or more elements, at least one of which is a metal, that has the characteristic properties of a metal

20 Clues: - an ion with a positive charge • - an ion with a negative charge • - the energy stored in chemical bonds • - the force that holds cations and anions together • - the force that holds atoms or ions together as a unit • - new substances formed as a result of a chemical reaction • - a substance that undergoes change in a chemical reaction • ...

Vocab 2023-11-06

Vocab crossword puzzle
Across
  1. the force that holds cations and anions together
  2. the force that holds atoms or ions together as a unit
  3. a chemical reaction in which two compounds exchange positive ions and form new compounds
  4. a neutral group of atoms that are joined together by one or more covalent bonds
  5. the attraction between a metal cation and the shared electrons that surround it
  6. new substances formed as a result of a chemical reaction
  7. a chemical bond in which two atoms share a pair of valence electrons
  8. an atom or group of atoms that has a positive or negative charge
  9. a substance that undergoes change in a chemical reaction
  10. an ion with a negative charge
  11. the energy stored in chemical bonds
  12. a chemical reaction in which two or more substances react to form a single substance
Down
  1. notation that shows what elements a compound contains and the ratio of the atoms or ions of these elements in the compound
  2. a chemical reaction in which a compound breaks down into two or more simpler substances
  3. a chemical reaction in which one element takes the place of another element in a compound
  4. numbers that appear before a formula in a chemical equation to show the relative proportions of each reactant and product
  5. a representation of a chemical reaction in which the reactants and products are expressed as formulas
  6. a diagram of an atom, ion or molecule in which each dot represents a valence electron
  7. an ion with a positive charge
  8. a mixture of two or more elements, at least one of which is a metal, that has the characteristic properties of a metal

20 Clues: an ion with a positive charge • an ion with a negative charge • the energy stored in chemical bonds • the force that holds cations and anions together • the force that holds atoms or ions together as a unit • new substances formed as a result of a chemical reaction • a substance that undergoes change in a chemical reaction • ...

Ch 6&7 2024-04-04

Ch 6&7 crossword puzzle
Across
  1. the attraction between a metal cation and the shared electrons that surround it
  2. a chemical reaction in which two or more substances react to form a single substance
  3. a chemical reaction in which one element takes the place of another element in a compound
  4. a neutral group of atoms that are joined together by one or more covalent bonds
  5. an atom or group of atoms that has a positive or negative charge
  6. a mixture of two or more elements, at least one of which is a metal, that has the characteristic properties of a metal
  7. a diagram of an atom, ion or molecule in which each dot represents a valence electron
  8. new substances formed as a result of a chemical reaction
  9. the force that holds atoms or ions together as a unit
  10. an ion with a negative charge
Down
  1. an ion with a positive charge
  2. a chemical reaction in which two compounds exchange positive ions and form new compounds
  3. the energy stored in chemical bonds
  4. a chemical bond in which two atoms share a pair of valence electrons
  5. numbers that appear before a formula in a chemical equation to show the relative proportions of each reactant and product
  6. notation that shows what elements a compound contains and the ratio of the atoms or ions of these elements in the compound
  7. a representation of a chemical reaction in which the reactants and products are expressed as formulas
  8. a substance that undergoes change in a chemical reaction
  9. a chemical reaction in which a compound breaks down into two or more simpler substances
  10. the force that holds cations and anions together

20 Clues: an ion with a positive charge • an ion with a negative charge • the energy stored in chemical bonds • the force that holds cations and anions together • the force that holds atoms or ions together as a unit • a substance that undergoes change in a chemical reaction • new substances formed as a result of a chemical reaction • ...

Types of Chemical Equations 2025-04-24

Types of Chemical Equations crossword puzzle
Across
  1. A type of chemical reaction that involves both reduction (gain of electrons) and oxidation (loss of electrons).
  2. A chemical equation where the number of atoms of each element is the same on both the reactant and product sides.
  3. A chemical equation that shows the chemical formulas of the reactants and products but is not balanced.
  4. A type of chemical reaction where two or more reactants join together to form a single product.
  5. A type of chemical reaction where a single compound breaks down into two or more simpler substances.
  6. The insoluble solid that forms and separates out of a solution during a precipitation reaction.
  7. A process or reaction that absorbs heat from its surroundings.
  8. A substance that is formed as a result of a chemical reaction.
  9. The unpleasant smell and taste that develops in fats and oils when they are exposed to air for a long time.
  10. The gradual destruction of a material, especially a metal, by chemical or electrochemical reactions with its environment.
Down
  1. A substance that takes part in and undergoes change during a chemical reaction.
  2. A type of chemical reaction where a more reactive element takes the place of a less reactive element in a compound.
  3. A solution in which the solvent is water, often indicated by the symbol "(aq)" after a chemical formula.
  4. A process or reaction that releases heat to its surroundings.
  5. A type of double displacement reaction where an insoluble solid forms and separates from the solution.
  6. A type of chemical reaction where the positive and negative ions of two different ionic compounds exchange places, forming two new compounds.

16 Clues: A process or reaction that releases heat to its surroundings. • A process or reaction that absorbs heat from its surroundings. • A substance that is formed as a result of a chemical reaction. • A substance that takes part in and undergoes change during a chemical reaction. • ...

Reactions and Stoichiometry 2016-06-16

Reactions and Stoichiometry crossword puzzle
Across
  1. the rate at which reactants change into products over time
  2. positive or negative number that indicates how many electrons an atom has gained, lost, or shared to become stable
  3. the SI unit of amount of substance
  4. A reaction in which a single compound breaks down to form two or more simpler substances (AB-->A+B)
  5. a chemical change in which one element replaces a second element in a compound (A+Bx-->Ax+B)
  6. Proton (H+) acceptor
  7. An ionic compound made up of a cation from a base and an anion from an acid
  8. a chemical reaction in which each side of the equation has the same number of atoms of each element
  9. a chemical compound that increases the concentration of hydrogen ions in an aqueous solution
Down
  1. a chemical reaction in which one atom gains electrons while one atom loses electrons
  2. the percent by mass of each element in a compound
  3. the volume occupied by 1 mole of a gas at STP
  4. an organic compound consisting of only hydrogen and carbon
  5. the ratio of the actual yield to the theoretical yield for a chemical reaction
  6. a measure of how much solute can dissolve in a given solvent at a given temperature
  7. A substance produced in a chemical reaction
  8. number of representative particles in a mole, 6.02x10^23
  9. the principle that states that the total amount of matter is constant during any chemical or physical change, matter is neither created nor destroyed
  10. A solid that forms from a solution during a chemical reaction
  11. a chemical substance that is present at the start of a chemical reaction
  12. a substance that increases the concentration of hydroxide ions in an aqueous solution

21 Clues: Proton (H+) acceptor • the SI unit of amount of substance • A substance produced in a chemical reaction • the volume occupied by 1 mole of a gas at STP • the percent by mass of each element in a compound • number of representative particles in a mole, 6.02x10^23 • an organic compound consisting of only hydrogen and carbon • ...

Ch.11 2023-11-29

Ch.11 crossword puzzle
Across
  1. an ion with a negative charge
  2. a neutral group of atoms that are joined together by one or more covalent bonds
  3. a mixture of two or more elements, at least one of which is a metal, that has the characteristic properties of a metal
  4. the attraction between a metal cation and the shared electrons that surround it
  5. the force that holds cations and anions together
  6. a substance that undergoes change in a chemical reaction
  7. a representation of a chemical reaction in which the reactants and products are expressed as formulas
  8. an ion with a positive charge
  9. a chemical reaction in which a compound breaks down into two or more simpler substances
  10. a diagram of an atom, ion or molecule in which each dot represents a valence electron
  11. a chemical reaction in which one element takes the place of another element in a compound
Down
  1. a chemical reaction in which two or more substances react to form a single substance
  2. the energy stored in chemical bonds
  3. a chemical reaction in which two compounds exchange positive ions and form new compounds
  4. a chemical bond in which two atoms share a pair of valence electrons
  5. numbers that appear before a formula in a chemical equation to show the relative proportions of each reactant and product
  6. the force that holds atoms or ions together as a unit
  7. notation that shows what elements a compound contains and the ratio of the atoms or ions of these elements in the compound
  8. new substances formed as a result of a chemical reaction
  9. an atom or group of atoms that has a positive or negative charge

20 Clues: an ion with a negative charge • an ion with a positive charge • the energy stored in chemical bonds • the force that holds cations and anions together • the force that holds atoms or ions together as a unit • a substance that undergoes change in a chemical reaction • new substances formed as a result of a chemical reaction • ...

CH 6&7 SCHOOLOGY 2023-11-10

CH 6&7 SCHOOLOGY crossword puzzle
Across
  1. a chemical reaction in which one element takes the place of another element in a compound
  2. a chemical reaction in which two compounds exchange positive ions and form new compounds
  3. a chemical reaction in which a compound breaks down into two or more simpler substances
  4. an ion with a positive charge
  5. the force that holds atoms or ions together as a unit
  6. a diagram of an atom, ion or molecule in which each dot represents a valence electron
  7. a chemical reaction in which two or more substances react to form a single substance
  8. numbers that appear before a formula in a chemical equation to show the relative proportions of each reactant and product
  9. a neutral group of atoms that are joined together by one or more covalent bonds
  10. the energy stored in chemical bonds
  11. a mixture of two or more elements, at least one of which is a metal, that has the characteristic properties of a metal
Down
  1. the attraction between a metal cation and the shared electrons that surround it
  2. the force that holds cations and anions together
  3. a chemical bond in which two atoms share a pair of valence electrons
  4. a substance that undergoes change in a chemical reaction
  5. a representation of a chemical reaction in which the reactants and products are expressed as formulas
  6. an atom or group of atoms that has a positive or negative charge
  7. an ion with a negative charge
  8. new substances formed as a result of a chemical reaction
  9. notation that shows what elements a compound contains and the ratio of the atoms or ions of these elements in the compound

20 Clues: an ion with a positive charge • an ion with a negative charge • the energy stored in chemical bonds • the force that holds cations and anions together • the force that holds atoms or ions together as a unit • a substance that undergoes change in a chemical reaction • new substances formed as a result of a chemical reaction • ...

Chapter 6 & 7 Vocab 2023-11-03

Chapter 6 & 7 Vocab crossword puzzle
Across
  1. - a representation of a chemical reaction in which the reactants and products are expressed as formulas
  2. - a chemical reaction in which two compounds exchange positive ions and form new compounds
  3. - the attraction between a metal cation and the shared electrons that surround it
  4. - the force that holds cations and anions together
  5. - the force that holds atoms or ions together as a unit
  6. - numbers that appear before a formula in a chemical equation to show the relative proportions of each reactant and product
  7. - a chemical reaction in which one element takes the place of another element in a compound
  8. - new substances formed as a result of a chemical reaction
  9. - an ion with a positive charge
  10. - a chemical reaction in which two or more substances react to form a single substance
  11. - an atom or group of atoms that has a positive or negative charge
Down
  1. - a chemical bond in which two atoms share a pair of valence electrons
  2. - notation that shows what elements a compound contains and the ratio of the atoms or ions of these elements in the compound
  3. - a diagram of an atom, ion or molecule in which each dot represents a valence electron
  4. - a neutral group of atoms that are joined together by one or more covalent bonds
  5. - a chemical reaction in which a compound breaks down into two or more simpler substances
  6. - a mixture of two or more elements, at least one of which is a metal, that has the characteristic properties of a metal
  7. - a substance that undergoes change in a chemical reaction
  8. - the energy stored in chemical bonds
  9. - an ion with a negative charge

20 Clues: - an ion with a negative charge • - an ion with a positive charge • - the energy stored in chemical bonds • - the force that holds cations and anions together • - the force that holds atoms or ions together as a unit • - a substance that undergoes change in a chemical reaction • - new substances formed as a result of a chemical reaction • ...

Ch 6 and 7 Vocab 2023-11-06

Ch 6 and 7 Vocab crossword puzzle
Across
  1. - the force that holds cations and anions together
  2. - the force that holds atoms or ions together as a unit
  3. - a chemical reaction in which two compounds exchange positive ions and form new compounds
  4. - a neutral group of atoms that are joined together by one or more covalent bonds
  5. - the attraction between a metal cation and the shared electrons that surround it
  6. - new substances formed as a result of a chemical reaction
  7. - a chemical bond in which two atoms share a pair of valence electrons
  8. - an atom or group of atoms that has a positive or negative charge
  9. - a substance that undergoes change in a chemical reaction
  10. - an ion with a negative charge
  11. - the energy stored in chemical bonds
  12. - a chemical reaction in which two or more substances react to form a single substance
Down
  1. - notation that shows what elements a compound contains and the ratio of the atoms or ions of these elements in the compound
  2. - a chemical reaction in which a compound breaks down into two or more simpler substances
  3. - a chemical reaction in which one element takes the place of another element in a compound
  4. - numbers that appear before a formula in a chemical equation to show the relative proportions of each reactant and product
  5. - a representation of a chemical reaction in which the reactants and products are expressed as formulas
  6. - a diagram of an atom, ion or molecule in which each dot represents a valence electron
  7. - an ion with a positive charge
  8. - a mixture of two or more elements, at least one of which is a metal, that has the characteristic properties of a metal

20 Clues: - an ion with a positive charge • - an ion with a negative charge • - the energy stored in chemical bonds • - the force that holds cations and anions together • - the force that holds atoms or ions together as a unit • - new substances formed as a result of a chemical reaction • - a substance that undergoes change in a chemical reaction • ...

Science unit 6/7 Vocab 2024-04-02

Science unit 6/7 Vocab crossword puzzle
Across
  1. numbers that appear before a formula in a chemical equation to show the relative proportions of each reactant and product
  2. new substances formed as a result of a chemical reaction
  3. a chemical bond in which two atoms share a pair of valence electrons
  4. the force that holds cations and anions together
  5. the force that holds atoms or ions together as a unit
  6. a mixture of two or more elements, at least one of which is a metal, that has the characteristic properties of a metal
  7. a chemical reaction in which two compounds exchange positive ions and form new compounds
  8. a neutral group of atoms that are joined together by one or more covalent bonds
  9. an ion with a positive charge
  10. a representation of a chemical reaction in which the reactants and products are expressed as formulas
  11. a substance that undergoes change in a chemical reaction
  12. a chemical reaction in which two or more substances react to form a single substance
Down
  1. a chemical reaction in which a compound breaks down into two or more simpler substances
  2. a diagram of an atom, ion or molecule in which each dot represents a valence electron
  3. notation that shows what elements a compound contains and the ratio of the atoms or ions of these elements in the compound
  4. a chemical reaction in which one element takes the place of another element in a compound
  5. the energy stored in chemical bonds
  6. an ion with a negative charge
  7. the attraction between a metal cation and the shared electrons that surround it
  8. an atom or group of atoms that has a positive or negative charge

20 Clues: an ion with a negative charge • an ion with a positive charge • the energy stored in chemical bonds • the force that holds cations and anions together • the force that holds atoms or ions together as a unit • new substances formed as a result of a chemical reaction • a substance that undergoes change in a chemical reaction • ...

Science Vocabulary 6 2023-11-02

Science Vocabulary 6 crossword puzzle
Across
  1. the force that holds cations and anions together
  2. a chemical reaction in which two compounds exchange positive ions and form new compounds
  3. a mixture of two or more elements, at least one of which is a metal, that has the characteristic properties of a metal
  4. an ion with a positive charge
  5. numbers that appear before a formula in a chemical equation to show the relative proportions of each reactant and product
  6. a chemical bond in which two atoms share a pair of valence electrons
  7. a chemical reaction in which two or more substances react to form a single substance
  8. a chemical reaction in which a compound breaks down into two or more simpler substances
  9. notation that shows what elements a compound contains and the ratio of the atoms or ions of these elements in the compound
  10. the force that holds atoms or ions together as a unit
Down
  1. a representation of a chemical reaction in which the reactants and products are expressed as formulas
  2. the attraction between a metal cation and the shared electrons that surround it
  3. a substance that undergoes change in a chemical reaction
  4. a chemical reaction in which one element takes the place of another element in a compound
  5. an atom or group of atoms that has a positive or negative charge
  6. the energy stored in chemical bonds
  7. a diagram of an atom, ion or molecule in which each dot represents a valence electron
  8. an ion with a negative charge
  9. a neutral group of atoms that are joined together by one or more covalent bonds
  10. new substances formed as a result of a chemical reaction

20 Clues: an ion with a negative charge • an ion with a positive charge • the energy stored in chemical bonds • the force that holds cations and anions together • the force that holds atoms or ions together as a unit • a substance that undergoes change in a chemical reaction • new substances formed as a result of a chemical reaction • ...

Science Vocabulary 6 2023-11-02

Science Vocabulary 6 crossword puzzle
Across
  1. the energy stored in chemical bonds
  2. a mixture of two or more elements, at least one of which is a metal, that has the characteristic properties of a metal
  3. an ion with a positive charge
  4. numbers that appear before a formula in a chemical equation to show the relative proportions of each reactant and product
  5. the attraction between a metal cation and the shared electrons that surround it
  6. a chemical reaction in which a compound breaks down into two or more simpler substances
  7. a chemical bond in which two atoms share a pair of valence electrons
  8. a neutral group of atoms that are joined together by one or more covalent bonds
  9. a chemical reaction in which two or more substances react to form a single substance
  10. a representation of a chemical reaction in which the reactants and products are expressed as formulas
Down
  1. a chemical reaction in which one element takes the place of another element in a compound
  2. a diagram of an atom, ion or molecule in which each dot represents a valence electron
  3. notation that shows what elements a compound contains and the ratio of the atoms or ions of these elements in the compound
  4. a substance that undergoes change in a chemical reaction
  5. the force that holds atoms or ions together as a unit
  6. a chemical reaction in which two compounds exchange positive ions and form new compounds
  7. an atom or group of atoms that has a positive or negative charge
  8. new substances formed as a result of a chemical reaction
  9. the force that holds cations and anions together
  10. an ion with a negative charge

20 Clues: an ion with a positive charge • an ion with a negative charge • the energy stored in chemical bonds • the force that holds cations and anions together • the force that holds atoms or ions together as a unit • a substance that undergoes change in a chemical reaction • new substances formed as a result of a chemical reaction • ...

Science Vocabulary 6 2023-11-02

Science Vocabulary 6 crossword puzzle
Across
  1. a chemical reaction in which two compounds exchange positive ions and form new compounds
  2. the force that holds atoms or ions together as a unit
  3. a chemical reaction in which a compound breaks down into two or more simpler substances
  4. a chemical bond in which two atoms share a pair of valence electrons
  5. a substance that undergoes change in a chemical reaction
  6. a representation of a chemical reaction in which the reactants and products are expressed as formulas
  7. a diagram of an atom, ion or molecule in which each dot represents a valence electron
Down
  1. a chemical reaction in which one element takes the place of another element in a compound
  2. numbers that appear before a formula in a chemical equation to show the relative proportions of each reactant and product
  3. a neutral group of atoms that are joined together by one or more covalent bonds
  4. a chemical reaction in which two or more substances react to form a single substance
  5. the energy stored in chemical bonds
  6. an atom or group of atoms that has a positive or negative charge
  7. an ion with a positive charge
  8. notation that shows what elements a compound contains and the ratio of the atoms or ions of these elements in the compound
  9. an ion with a negative charge
  10. new substances formed as a result of a chemical reaction
  11. a mixture of two or more elements, at least one of which is a metal, that has the characteristic properties of a metal
  12. the force that holds cations and anions together
  13. the attraction between a metal cation and the shared electrons that surround it

20 Clues: an ion with a positive charge • an ion with a negative charge • the energy stored in chemical bonds • the force that holds cations and anions together • the force that holds atoms or ions together as a unit • a substance that undergoes change in a chemical reaction • new substances formed as a result of a chemical reaction • ...