chemical reaction Crossword Puzzles

Physical Changes & Chemical Reactions 2014-04-30

Physical Changes & Chemical Reactions crossword puzzle
Across
  1. During ______________ particles move further away from each other, causing the volume of the substance to increase
  2. In a __________ reaction new substances are formed
  3. When two substances are combined together but can still be physically separated
  4. A physical process where a solid breaks up in a liquid
  5. Chemical changes are generally ___________; the original substances cannot be restored
  6. Physical changes are generally ___________; the original substance can be restored
  7. During ______________ particles move closer together, causing the volume of the substance to decrease
  8. The term used to describe a liquid turning into a solid
Down
  1. In a ________________ change no new substances are formed
  2. If ___________ are produced during a chemical reaction it indicates a gas is being released
  3. The substances you have at the end of a chemical reaction
  4. The substances you have at the beginning of a chemical reaction
  5. The term used to describe a solid turning into a liquid
  6. The term used to describe a gas turning into a liquid
  7. The solid formed during a chemical reaction with two liquids
  8. The term used to describe a liquid turning into a gas
  9. Some chemical reactions must absorb energy in the form of _________ in order to occur
  10. A _________ change can be an indication of a chemical change
  11. During some chemical reactions _________ is released in the form of heat, sound or light

19 Clues: In a __________ reaction new substances are formed • The term used to describe a gas turning into a liquid • The term used to describe a liquid turning into a gas • A physical process where a solid breaks up in a liquid • The term used to describe a solid turning into a liquid • The term used to describe a liquid turning into a solid • ...

BIO 103 Quiz 2 2021-02-09

BIO 103 Quiz 2 crossword puzzle
Across
  1. In a chemical reaction, the state in which the rate of the forward reaction equals the rate of the reverse reaction
  2. A chemical element required for an organism to survive, grow, and reproduce
  3. The three dimensional space where an electron is fond 90% of the time
  4. The making and breaking of chemical bonds, leading to changes in the composition of matter
  5. The capacity to cause change, especially to do work
  6. A covalent bond between atoms that differ in electronegativity, such that shared electrons are pulled more closely to the more electronegative atom.
  7. A negatively charged ion
  8. A subatomic particle with no charge
  9. A material resulting from a chemical reaction
  10. A positively charged ion
Down
  1. the attraction of a given atom for the electrons in a covalent bond
  2. A starting material in a chemical reaction
  3. A compound resulting from the formation of an ionic bond
  4. A subatomic particle with a negative charge
  5. elements are those required by an organism in only minute quantities are called ______.
  6. A subatomic particle with a positive charge
  7. A type of weak chemical bond formed when the partial charge of H in a polar covalent bond is attracted to a partial negative charge in a different atom.
  8. Covalent bonds between two atoms that are equally electronegative are called _______.
  9. A substance that cannot be broken down into any other substance by chemical reactions

19 Clues: A negatively charged ion • A positively charged ion • A subatomic particle with no charge • A starting material in a chemical reaction • A subatomic particle with a negative charge • A subatomic particle with a positive charge • A material resulting from a chemical reaction • The capacity to cause change, especially to do work • ...

Chemical reaction 2021-02-04

Chemical reaction crossword puzzle
Across
  1. the starting substance in a chemical-
  2. process when atoms rearrange
  3. image or diagram
  4. Tiny pieces that all matter is made of
Down
  1. something made of the same atoms/group
  2. atoms grouped together in a certain way
  3. substance written in letter and
  4. atoms
  5. something observed about a substance

9 Clues: atoms • image or diagram • process when atoms rearrange • substance written in letter and • something observed about a substance • the starting substance in a chemical- • something made of the same atoms/group • Tiny pieces that all matter is made of • atoms grouped together in a certain way

Chapter 7 Vocab 2024-01-02

Chapter 7 Vocab crossword puzzle
Across
  1. reaction a chemical reaction that releases energy by light or heat
  2. reaction chemical reaction that involves a transfer of electrons between two species.
  3. reaction one of the major classes of chemical reactions
  4. reaction a reaction in which a compound breaks down into two or more simpler substances.
  5. a substance that takes part in and undergoes change during a reaction.
  6. energy the energy stored in the bonds of chemical compound
  7. a thing or person that is the result of an action or process.
  8. reaction any chemical reaction that absorbs heat from its environment.
  9. reaction a reaction in which the positive and negative ions of two ionic compounds exchange places to form two new compounds.
  10. reaction a reaction in which a substance reacts with oxygen gas, releasing energy in the form of light and heat
Down
  1. a multiplier or factor that measures some property.
  2. equation a representation of a chemical reaction using symbols of the elements to indicate the amount of substance
  3. reaction a reaction in which one element replaces a similar element in a compound
  4. the amount of substance of a system which contains as many elementary entities as there are atoms in 0.012 kilogram of carbon-12.
  5. mass the ratio between the mass and the amount of substance (measured in moles) of any sample

15 Clues: a multiplier or factor that measures some property. • reaction one of the major classes of chemical reactions • energy the energy stored in the bonds of chemical compound • a thing or person that is the result of an action or process. • reaction a chemical reaction that releases energy by light or heat • ...

Jacob Meier chapter 13 2016-10-13

Jacob Meier chapter 13 crossword puzzle
Across
  1. Description of a chemical reaction in which there is a net absorption of energy.
  2. The deterioration of a metal.
  3. energy The minimum amount of energy required in order for a chemical reaction to proceed.
  4. Description of a solution in which the hydronium ion is equal to the hydroxide ion.
  5. Description of a chemical reaction in which there is a net release of energy.
  6. The reaction substances in a chemical reaction.
Down
  1. The new materials formed in a chemical reaction.
  2. A substance that donates hydrogen ions
  3. A reaction between an acid and a base.
  4. A solution where the hydronium ion concentration is higher than the hydroxide ion.
  5. a substance that accepts hydrogen ions.
  6. A rapid exothermic oxidation.
  7. The process in which a reactant loses one or more electrons.
  8. acidity of a solution
  9. any substance that increases the rate of reaction.

15 Clues: acidity of a solution • The deterioration of a metal. • A rapid exothermic oxidation. • A substance that donates hydrogen ions • A reaction between an acid and a base. • a substance that accepts hydrogen ions. • The reaction substances in a chemical reaction. • The new materials formed in a chemical reaction. • any substance that increases the rate of reaction. • ...

Chemical reaction 2021-02-04

Chemical reaction crossword puzzle
Across
  1. the starting substance in a chemical-
  2. process when atoms rearrange
  3. image or diagram
  4. Tiny pieces that all matter is made of
Down
  1. something made of the same atoms/group
  2. atoms grouped together in a certain way
  3. substance written in letter and
  4. atoms
  5. something observed about a substance

9 Clues: atoms • image or diagram • process when atoms rearrange • substance written in letter and • something observed about a substance • the starting substance in a chemical- • something made of the same atoms/group • Tiny pieces that all matter is made of • atoms grouped together in a certain way

Chemical reaction 2021-03-05

Chemical reaction crossword puzzle
Across
  1. 8)A chemical formula is also called ... formula
  2. 2)what is the opposite reactions to the synthesis?
  3. 7)he wrote the formula on Senku’s clothes
  4. 9)the arrow in between products and reactants
Down
  1. 3)organic compounds such as ... and hydrogen are always listed first
  2. 1)who identified the synthesis reactions?
  3. 4)Priestley had discovered ... as a result of decomposition reaction
  4. 5)in chemical reactions it never changes
  5. 6)had postulated the atomic theory in the 19th

9 Clues: 5)in chemical reactions it never changes • 1)who identified the synthesis reactions? • 7)he wrote the formula on Senku’s clothes • 9)the arrow in between products and reactants • 6)had postulated the atomic theory in the 19th • 8)A chemical formula is also called ... formula • 2)what is the opposite reactions to the synthesis? • ...

Photosynthesis and Cellular Respiration 2023-05-10

Photosynthesis and Cellular Respiration crossword puzzle
Across
  1. Outputs of a chemical reaction
  2. Where cellular respiration occurs
  3. Make molecules
  4. dioxide A reactant in photosynthesis
  5. A reactant in photosynthesis
  6. A process by which plants make glucose
  7. opening in plants that let CO2 in and air out
  8. Organisms that don't have mitochondria
Down
  1. A product of photosynthesis
  2. chemical reaction with oxygen
  3. The energy units that are produced from cellular respiration
  4. What gives plants their green color
  5. chemical reaction without oxygen
  6. Where chlorophyll are found
  7. Inputs of a chemical reaction
  8. Organisms stay balanced
  9. A product of photosynthesis
  10. A reactant in photosynthesis

18 Clues: Make molecules • Organisms stay balanced • A product of photosynthesis • Where chlorophyll are found • A product of photosynthesis • A reactant in photosynthesis • A reactant in photosynthesis • chemical reaction with oxygen • Inputs of a chemical reaction • Outputs of a chemical reaction • chemical reaction without oxygen • Where cellular respiration occurs • ...

Chemical Bonds, Formulas, Reactions, Equations 2022-03-06

Chemical Bonds, Formulas, Reactions, Equations crossword puzzle
Across
  1. A reaction in which one element replaces another in a compound or when two elements in different compounds trade places.
  2. Change A change in which one or more substances combine or break apart to form new substances.
  3. A substance formed as a result of a chemical reaction.
  4. A chemical reaction that breaks down compounds into simpler products.
  5. System A system in which matter can enter from or escape to the surroundings.
  6. Law of the Conservation of Mass The principle that the total amount of matter is neither created nor destroyed during any chemical or physical change.
  7. Change A change that alters the form or appearance of a material but does not make the material into another substance.
  8. A substance that enters into a chemical reaction.
  9. A solid that forms from a solution during a chemical reaction.
  10. A reaction that absorbs energy, often in the form of heat, becoming colder.
Down
  1. 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.
  2. Equation A short, easy way to show a chemical reaction, using symbols.
  3. System A system in which no matter is allowed to enter or leave.
  4. A reaction that releases energy, usually in the form of heat, becoming warmer.
  5. A chemical reaction in which two or more simple substances combine to form a new, more complex substance.

15 Clues: A substance that enters into a chemical reaction. • A substance formed as a result of a chemical reaction. • A solid that forms from a solution during a chemical reaction. • System A system in which no matter is allowed to enter or leave. • A chemical reaction that breaks down compounds into simpler products. • ...

Chemical Reactions 2024-02-14

Chemical Reactions crossword puzzle
Across
  1. OUTERMOST ELECTRONS OF AN ATOM
  2. A REACTION WHERE ONE COMPOUND BREAKS APART INTO MULTIPLE ELEMENTS
  3. TYPE OF ELEMENT ON THE RIGHT 1/4 OF THE PERIODIC TABLE
  4. THE ENDING SUBSTANCES IN A CHEMICAL REACTION
  5. A SYMBOL FOR A SUBSTANCE WITH ONE CAPITAL LETTER
  6. WHEN A SUBSTANCES TURNS INTO A DIFFERENT SUBSTANCE
  7. TYPE OF ELEMENT ON THE LEFT 3/4 OF THE PERIODIC TABLE (EXCEPT HYDROGEN)
  8. LARGE NUMBER YOU PUT IN FRONT OF A CHEMICAL FORMULA WHEN YOU BALANCE AN EQUATION
  9. A SYMBOL FOR A SUBSTANCE WITH TWO OR MORE CAPITAL LETTERS
  10. AN EXPERIMENTAL SETUP THAT IS SEALED AND DOES NOT ALLOW THINGS TO GET IN OR OUT
  11. SOMETHING THAT DESCRIBES A CHEMICAL CHANGE USING NUMBERS, SYMBOLS, AND FORMULAS
  12. A REACTION WHERE TWO ELEMENTS COMBINE TO FORM A COMPOUND
Down
  1. AN ELEMENT WITH MULTIPLE POSSIBLE NUMBERS OF VALENCE ELECTRONS
  2. ANYTHING THAT HAS MASS AND TAKES UP SPACE
  3. MATTER IS NOT CREATED OR DESTROYED IN A CHEMICAL REACTION, JUST REARRANGED
  4. AN ELEMENT THAT ALWAYS GETS A SUBSCRIPT 2 WHEN ITS BY ITSELF
  5. THE STARTING SUBSTANCES IN A CHEMICAL REACTION
  6. AN EXPERIMENTAL SETUP THAT ALLOWS THINGS TO GET IN AND OUT
  7. DESCRIBES WHAT HAPPENS IN ORDER FOR A CHEMICAL CHANGE TO OCCUR
  8. A REACTION WHERE A CARBON COMPOUND BURNS IN THE PRESENCE OF OXYGEN AND PRODUCES WATER AND CARBON DIOXIDE

20 Clues: OUTERMOST ELECTRONS OF AN ATOM • ANYTHING THAT HAS MASS AND TAKES UP SPACE • THE ENDING SUBSTANCES IN A CHEMICAL REACTION • THE STARTING SUBSTANCES IN A CHEMICAL REACTION • A SYMBOL FOR A SUBSTANCE WITH ONE CAPITAL LETTER • WHEN A SUBSTANCES TURNS INTO A DIFFERENT SUBSTANCE • TYPE OF ELEMENT ON THE RIGHT 1/4 OF THE PERIODIC TABLE • ...

Vocab 5 ~ Crossword Puzzle 2016-11-03

Vocab 5 ~ Crossword Puzzle crossword puzzle
Across
  1. / A solid that forms during a chemical reaction in solution
  2. reaction / Any process in which electrons are added to an atom or ion (as by removing oxygen or adding hydrogen)
  3. → A + B.
  4. number / The number of electrons an atom gains, loses or shares when it forms chemical bonds.
  5. reaction / A double displacement reaction between an acid and a base to produce a salt (ionic compound) and water (solvent). Acidic and basic properties are destroyed.
  6. replacement reaction / reactant ionic compounds exchange ions to form two new product compounds with the same ions. A+B + C+D → A+D + C+B
Down
  1. reaction / two or more reactants combine to produce a single product. A + B --> AB
  2. Reactivity / chemical bonds between atoms are broken and new ones are formed. Producing one or more different substances.
  3. reaction / one reactant yields two or more products.
  4. series / list of elements organized according to the ease with which the elements undergo chemical reactions
  5. reaction / a chemical reaction that occurs when a substance reacts with oxygen, releasing energy in the form of heat and light
  6. reaction / There is a formation of a solid (known as a precipitate). They are classified as double replacement reactions.
  7. replacement reaction / one element replaces another element in a compound A+BC --> AC + B
  8. / the amount of a substance required to form a saturated solution with specific amount of solvent at a specified temperature
  9. ionic equation / Chemical equation for a reaction which lists only those species participating in the reaction.

15 Clues: → A + B. • reaction / one reactant yields two or more products. • / A solid that forms during a chemical reaction in solution • reaction / two or more reactants combine to produce a single product. A + B --> AB • replacement reaction / one element replaces another element in a compound A+BC --> AC + B • ...

Chemistry Crossword 2012-06-09

Chemistry Crossword crossword puzzle
Across
  1. Bromide the chemical name for LiBr
  2. electrons outer electrons
  3. Oxide the chemical name for BaO
  4. The Group 2 elements, the most reactive group on the periodic table
  5. a compound that separates into ions when it dissolves in water, producing a solution that conducts electricity
  6. a solid formed from the reaction of two solutions
  7. rapid reaction of a substance with oxygen to produce oxides
  8. Bond The attraction that holds oppositely charged ions together in a compound
  9. molecule a molecule consisting of only two atoms of either the same or different elements
  10. Ion an ion made up of more than one atom that acts as a single particle
  11. Property a description of a substance that does not involve forming a new substance (colour, texture and density)
  12. a chemical that is produced during a chemical reaction
  13. Property A characteristic behavior that occurs when the substance changes into something new
  14. Metal The Group 1 Elements
  15. ions that have negative charges
  16. for molecular compounds what's the prefix for 4
Down
  1. Earth Metals The Group 2 Elements
  2. acid the chemical name for HCI
  3. (II) Oxide the chemical name for PbO
  4. a chemical, present at the start of a chemical reaction, that is used up during the reaction
  5. Oxide the chemical name for BeO
  6. a particle in which atoms are joined by covalent bonds
  7. Compound a pure substance formed from two or more non-metals
  8. Neither acidic or basic; with a pH of 7
  9. ions with a positive charge
  10. Gases The Group 18 elements

26 Clues: electrons outer electrons • Metal The Group 1 Elements • ions with a positive charge • Gases The Group 18 elements • acid the chemical name for HCI • Oxide the chemical name for BaO • Oxide the chemical name for BeO • ions that have negative charges • Earth Metals The Group 2 Elements • Bromide the chemical name for LiBr • (II) Oxide the chemical name for PbO • ...

Chemistry Crossword 2012-06-09

Chemistry Crossword crossword puzzle
Across
  1. Metal The Group 1 Elements
  2. The Group 2 elements, the most reactive group on the periodic table
  3. Bromide the chemical name for LiBr
  4. Earth Metals The Group 2 Elements
  5. a solid formed from the reaction of two solutions
  6. acid the chemical name for HCI
  7. a particle in which atoms are joined by covalent bonds
  8. (II) Oxide the chemical name for PbO
  9. rapid reaction of a substance with oxygen to produce oxides
  10. a chemical, present at the start of a chemical reaction, that is used up during the reaction
  11. molecule a molecule consisting of only two atoms of either the same or different elements
  12. ions that have negative charges
Down
  1. for molecular compounds what's the prefix for 4
  2. Gases The Group 18 elements
  3. Oxide the chemical name for BaO
  4. Compound a pure substance formed from two or more non-metals
  5. Ion an ion made up of more than one atom that acts as a single particle
  6. Neither acidic or basic; with a pH of 7
  7. electrons outer electrons
  8. a compound that separates into ions when it dissolves in water, producing a solution that conducts electricity
  9. Oxide the chemical name for BeO
  10. a chemical that is produced during a chemical reaction
  11. Property a description of a substance that does not involve forming a new substance (colour, texture and density)
  12. Property A characteristic behavior that occurs when the substance changes into something new
  13. ions with a positive charge
  14. Bond The attraction that holds oppositely charged ions together in a compound

26 Clues: electrons outer electrons • Metal The Group 1 Elements • Gases The Group 18 elements • ions with a positive charge • acid the chemical name for HCI • Oxide the chemical name for BaO • Oxide the chemical name for BeO • ions that have negative charges • Earth Metals The Group 2 Elements • Bromide the chemical name for LiBr • (II) Oxide the chemical name for PbO • ...

Sam Cobb Science Crossword 2020-04-16

Sam Cobb Science Crossword crossword puzzle
Across
  1. only in plant cells strong and stiff
  2. the brain of a cell
  3. when a high concentration of matter flows to a low
  4. when cell membranes regulate the molecules that enter
  5. when a reaction absorbs heat, product is hotter
  6. what blood vessels do so blood stays away from skin
  7. "Powerhouse" of the cell
  8. chemical method of changing chemical compounds
Down
  1. part of cell is full of holes flexible and thin
  2. storage tanks of cells
  3. found in plant cells, green and makes food
  4. total kinetic energy of the tiny particles
  5. brain of the cell
  6. substances that are yielded from a chemical reaction
  7. Fluid in a cell that holds organelles in place
  8. substances initially involved in a chemical reaction
  9. pandemic of 2020
  10. what the blood vessels near the surface do to cool body
  11. when a reaction releases heat, product is colder
  12. cells internal organ

20 Clues: pandemic of 2020 • brain of the cell • the brain of a cell • cells internal organ • storage tanks of cells • "Powerhouse" of the cell • only in plant cells strong and stiff • found in plant cells, green and makes food • total kinetic energy of the tiny particles • Fluid in a cell that holds organelles in place • chemical method of changing chemical compounds • ...

Lesson 1.4 Unit 1 Vocab 2020-09-14

Lesson 1.4 Unit 1 Vocab crossword puzzle
Across
  1. complex sugar; many monosaccharides linked together. ex. cellulose, starch
  2. Nucleic acid that stores genetic information
  3. Type of protein used in chemical reactions. Speed up reactions by lowering the activation energy. Shape specific.
  4. Output of a chemical reaction. What leaves the enzyme after a reaction has occurred.
  5. A reaction that breaks down molecules into smaller parts.
  6. molecule made of many smaller molecules
  7. Acid Monomer of proteins. 20 different types
  8. Acid Monomer of lipids.
  9. Acid one of the 4 essential biomolecules. DNA and RNA are examples. Used to store genetic information.
  10. Nucleic acid that transports genetic information
  11. one of the 4 essential biomolecules. Short term energy storage, structure in plants
  12. Bond Chemical bond between amino acids
  13. Monomer of Nucleic Acids. 3 parts: Sugar, phosphate, nitrogen base.
Down
  1. single sugar, simple sugar. Ex. glucose
  2. substance that increases the rate (speed) of the reaction
  3. energy Amount of energy required to start a reaction
  4. To change shape
  5. single unit, building block, subunit
  6. one of the 4 essential biomolecules. Most diverse in terms of function. Used for structure, signaling, regulation, enzymes, transport.
  7. Input of a chemical reaction. Bonds to enzyme and undergoes change.
  8. matter containing carbon
  9. A reaction that builds new molecules from smaller molecules.
  10. Input of a chemical reaction. Synonym of substrate.
  11. one of the 4 essential biomolecules. Long term energy storage and membranes. ex. phospholipids
  12. many monomers linked together, ex. macromolecules

25 Clues: To change shape • Acid Monomer of lipids. • matter containing carbon • single unit, building block, subunit • Bond Chemical bond between amino acids • single sugar, simple sugar. Ex. glucose • molecule made of many smaller molecules • Nucleic acid that stores genetic information • Acid Monomer of proteins. 20 different types • Nucleic acid that transports genetic information • ...

Michael Graham science tic tac toe--types of reactions and chemical reactions crossword puzzle 2018-03-27

Michael Graham science tic tac toe--types of reactions and chemical reactions crossword puzzle crossword puzzle
Across
  1. total mass of the reactants equals total mass of the _______
  2. equation using formulas and symbols instead of words to represent a chemical reaction
  3. a reaction where energy is absorbed
  4. most decomposition reactions require ____.
  5. during a chemical reaction, matter is not ____ or destroyed
  6. matter can enter from or escape to the surroundings
  7. AC-->A+C
  8. AB+CD-->AD+CB
  9. a number that indicates the ratio of elements in a compound
Down
  1. a reaction where energy is released
  2. occurs when a substance reacts with oxygen to produce energy in the form of heat or light
  3. matter is not allowed to enter or leave
  4. symbols and numbers that represents atoms
  5. total mass of the _____ equals total mass of the products
  6. a number in front of the element
  7. A+BC-->AC+B
  8. A+B-->AB
  9. what the arrow means
  10. during a chemical reaction, matter is not created or _____

19 Clues: AC-->A+C • A+B-->AB • A+BC-->AC+B • AB+CD-->AD+CB • what the arrow means • a number in front of the element • a reaction where energy is released • a reaction where energy is absorbed • matter is not allowed to enter or leave • symbols and numbers that represents atoms • most decomposition reactions require ____. • matter can enter from or escape to the surroundings • ...

Unit 2: Chemistry of Life Vocabulary 2023-10-04

Unit 2: Chemistry of Life Vocabulary crossword puzzle
Across
  1. reaction- process that changes, or transforms, one set of chemicals into another set of chemicals
  2. complex cell that has a nucleus
  3. elements or compounds that enter into a chemical reaction
  4. of maintaining stable internal environment within a cell/organism
  5. reactant of an enzyme-catalyzed reaction
  6. reaction- a reaction that absorbs energy (absorbs heat)
  7. a complex carbohydrate made up of many monosaccharides
  8. reaction- a reaction that releases energy (gives off heat)
  9. biological catalysts
  10. reproduction-reproduction in which a single parent produces offspring, identical to the parent and each other
  11. energy- energy that is needed to get a reaction started
  12. reproduction-reproduction in which two parents produce unique offspring, different from the parents and each other
  13. made up of amino acids
  14. organism that lacks a nucleus
  15. acid- macromolecules containing hydrogen, oxygen, nitrogen, carbon, and phosphorus
  16. to which an organism responds
  17. material that organisms inherit from their parents
Down
  1. compound made up of carbon, hydrogen, and oxygen atoms; type of nutrient that is the major source of energy for the body
  2. formed as a result of a chemical reaction
  3. large organic molecule made up of many atoms (like proteins)
  4. molecules composed of many monomers; makes up macromolecules
  5. trait that an organism has that allows for it to survive and reproduce at a greater rate
  6. macromolecule made mostly from carbon and hydrogen atoms; includes fats, oils, and waxes
  7. small chemical unit that makes up a polymer
  8. substance that speeds up the rate of a chemical reaction
  9. the chemical reactions within an organism that build or break down substances
  10. simple sugar molecule
  11. acid- compound with an amino group on one end and a carboxyl group on the other end
  12. subunit of which nucleic acids are composed; made up of a 5-carbon sugar, a phosphate group, and a nitrogenous base

29 Clues: biological catalysts • simple sugar molecule • made up of amino acids • organism that lacks a nucleus • to which an organism responds • complex cell that has a nucleus • reactant of an enzyme-catalyzed reaction • formed as a result of a chemical reaction • small chemical unit that makes up a polymer • material that organisms inherit from their parents • ...

Unit 2 2025-09-25

Unit 2 crossword puzzle
Across
  1. substance that speeds up the rate of a chemical reaction
  2. bond- type of bond between atoms in which the electrons are shared
  3. capacity (specific heat)-- the amount of heat needed to raise the temperature of 1 gram of a substance 1 degree Celsius (°C)
  4. pure substance that consists entirely of one type of atom
  5. found in the nucleus that has no charge
  6. number-the number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table (also equals the number of electrons in an element)
  7. energy- energy that is needed to get a reaction started
  8. a combination of 2 or more elements connected by bonds
  9. action-- tendency of water to rise in a thin tube
  10. reaction- a reaction that absorbs energy (absorbs heat)
  11. force of attraction between different kinds of molecules
  12. reaction- a reaction that releases energy (gives off heat)
  13. reactant of an enzyme-catalyzed reaction
  14. symbol- one- or two-letter abbreviation for a chemical element name
  15. (chemistry definition) the center of an atom, which contains the protons and neutrons
Down
  1. formed as a result of a chemical reaction
  2. electron- electron found in the outermost shell of an atom; helps to determine bonding
  3. reaction- process that changes, or transforms, one set of chemicals into another set of chemicals
  4. positively charged particle found in the nucleus of an atom
  5. charged particle that orbits the nucleus in the electron cloud
  6. basic unit of matter
  7. attraction between molecules of the same substance
  8. mass-equal to the total number of protons and neutrons in the nucleus of an atom (based on isotopes)
  9. in a molecule, uneven distribution of electrons (results in (+) and (-) poles) ex. water
  10. bonding-- weak attraction between a hydrogen atom and another atom
  11. elements or compounds that enter into a chemical reaction
  12. biological catalysts

27 Clues: basic unit of matter • biological catalysts • found in the nucleus that has no charge • reactant of an enzyme-catalyzed reaction • formed as a result of a chemical reaction • action-- tendency of water to rise in a thin tube • attraction between molecules of the same substance • a combination of 2 or more elements connected by bonds • ...

CR& Matter Crossword 2025-08-20

CR& Matter Crossword crossword puzzle
Across
  1. A combination of substances that keep their own properties.
  2. A change that does not make a new substance (like melting ice).
  3. A force that holds atoms together in a molecule.
  4. Matter is not created or destroyed in a chemical reaction.
  5. A change that makes a new substance (like rusting or burning).
  6. A new substance formed in a chemical reaction.
  7. The smallest building block of matter.
  8. Observations or data that help explain what is happening in a reaction.
  9. of Matter The form matter takes (solid, liquid, gas).
Down
  1. A reaction that releases energy (feels warm or hot)
  2. A pure substance made of only one type of atom.
  3. Reaction A process where substances change into new substances.
  4. A reaction that absorbs energy (feels cool).
  5. The ability to cause change (often needed or released in reactions).
  6. Two or more atoms joined together.
  7. A starting substance in a chemical reaction.
  8. A substance made of different kinds of atoms bonded together.
  9. A characteristic of a substance (like color, hardness, or boiling point).
  10. A drawing, diagram, or object that helps explain something too small or complex to see directly.
  11. How much matter is in an object.

20 Clues: How much matter is in an object. • Two or more atoms joined together. • The smallest building block of matter. • A reaction that absorbs energy (feels cool). • A starting substance in a chemical reaction. • A new substance formed in a chemical reaction. • A pure substance made of only one type of atom. • A force that holds atoms together in a molecule. • ...

Science quiz 2013-07-05

Science quiz crossword puzzle
Across
  1. a hard substance
  2. any substance that undergoes a chemical change in a given reaction
  3. something used to represent something else
  4. a substance obtained from another substance through chemical change
  5. process of burning
  6. speed of a reaction
  7. breaking down
  8. the smallest componet of an element
  9. cause or affect
  10. accelerates a chemical reaction without itself being affected
  11. the periodic table is a list of?
  12. in maths a rule or principle
Down
  1. helps breaking down food
  2. outer area of an object
  3. something which is not metal
  4. used to cook a bbq
  5. composed of two or more elements
  6. a table of element
  7. hard material
  8. a combination of elements
  9. a flowing substance

21 Clues: hard material • breaking down • cause or affect • a hard substance • used to cook a bbq • a table of element • process of burning • speed of a reaction • a flowing substance • outer area of an object • helps breaking down food • a combination of elements • something which is not metal • in maths a rule or principle • composed of two or more elements • the periodic table is a list of? • ...

Observing Chemical Change 2022-03-18

Observing Chemical Change crossword puzzle
Across
  1. A rapid reaction between oxygen and a substance called fuel
  2. reaction in which energy is absorbed.
  3. Matter can enter from or escape to the surroundings.
  4. A material used to decrease the rate of a reaction.
  5. in front of chemical formula in an equation.
  6. in your body contain biological catalysts.
  7. Substances you have at the
  8. material that increases the rate of a reaction by lowering the activation energy
  9. One element replaces another in a compound or when two elements in different compounds trade places.
  10. reaction, using symbols instead of words.
  11. A solid that forms from solution during a chemical reaction
  12. A short,easy way to show a
  13. Characteristics of a substance that describes its ability to change into other substances.
  14. Matter is not allowed to enter or leave.
  15. that has mass and takes up space.
  16. A characteristic of a substance that can be observed without changing the substance
Down
  1. reaction that releases energy in the for of heat.
  2. Material that releases energy when it burns.
  3. Minimum amount of energy needed to start a chemical reaction
  4. When the reaction is complete, you have a new substance
  5. A change that alters the form or appearance of a substance but that does not make the substance into another substance.
  6. Amount of a substance in a given volume
  7. A Principle
  8. A change in matter that produces one or more new substances is a chemical change.
  9. in contrast to a synthesis reaction.
  10. The study of matter and how matter changes.
  11. When two or more elements or compounds combine to make a more complex substance.

27 Clues: A Principle • Substances you have at the • A short,easy way to show a • that has mass and takes up space. • in contrast to a synthesis reaction. • reaction in which energy is absorbed. • Amount of a substance in a given volume • Matter is not allowed to enter or leave. • reaction, using symbols instead of words. • in your body contain biological catalysts. • ...

Garett O Holmes Chapter-13Chemical 2016-10-12

Garett O Holmes Chapter-13Chemical crossword puzzle
Across
  1. Description of a chemical reaction in which there is a net absorption of energy.
  2. The new materials formed in a chemical reaction.
  3. Description of a chemical reaction in which there is a net release of energy.
  4. A measure of the acidity of a solution;equal to the negative logarithm of the hydronium ion concentration.
  5. The energy stored in molecules that can be released during a reaction.
  6. A substance that donates hydrogen ions.
  7. A rapid exothermic oxidation-reduction between a material and molecular oxygen.
Down
  1. A substance that accepts hydrogen ions.
  2. When a reaction and its reverse act at the same rate.
  3. Any substance that increases the rate of a chemical reaction without itself being consumed by the reaction.
  4. A polyatomic ion made by removing a proton(hydrogen ion)from a water molecule.
  5. the minimum energy required in order for a chemical reaction to proceed.
  6. Description of a solution in which the hydronium ion concentration ion is equal to the hydroxide ion concentration.
  7. A polyatomic ion made by adding a proton(hydrogen ion)to a water molecule.
  8. The reacting substances in a chemical reaction.

15 Clues: A substance that accepts hydrogen ions. • A substance that donates hydrogen ions. • The reacting substances in a chemical reaction. • The new materials formed in a chemical reaction. • When a reaction and its reverse act at the same rate. • The energy stored in molecules that can be released during a reaction. • ...

GarettOHolmes Chapter-130 2016-10-12

GarettOHolmes Chapter-130 crossword puzzle
Across
  1. A measure of the acidity of a solution;equal to the negative logarithm of the hydronium ion concentration.
  2. A polyatomic ion made by adding a proton(hydrogen ion)to a water molecule.
  3. The energy stored in molecules that can be released during a reaction.
  4. Any substance that increases the rate of a chemical reaction without itself being consumed by the reaction.
  5. A substance that accepts hydrogen ions.
  6. Description of a chemical reaction in which there is a net absorption of energy.
  7. The new materials formed in a chemical reaction.
Down
  1. A polyatomic ion made by removing a proton(hydrogen ion)from a water molecule.
  2. A rapid exothermic oxidation-reduction between a material and molecular oxygen.
  3. A substance that donates hydrogen ions.
  4. the minimum energy required in order for a chemical reaction to proceed.
  5. When a reaction and its reverse act at the same rate.
  6. The reacting substances in a chemical reaction.
  7. Description of a chemical reaction in which there is a net release of energy.
  8. Description of a solution in which the hydronium ion concentration ion is equal to the hydroxide ion concentration.

15 Clues: A substance that donates hydrogen ions. • A substance that accepts hydrogen ions. • The reacting substances in a chemical reaction. • The new materials formed in a chemical reaction. • When a reaction and its reverse act at the same rate. • The energy stored in molecules that can be released during a reaction. • ...

Garett Holmes chapter-13 2016-10-12

Garett Holmes chapter-13 crossword puzzle
Across
  1. A measure of the acidity of a solution;equal to the negative logarithm of the hydronium ion concentration.
  2. Description of a solution in which the hydronium ion concentration ion is equal to the hydroxide ion concentration.
  3. The new materials formed in a chemical reaction.
  4. Description of a chemical reaction in which there is a net release of energy.
  5. the minimum energy required in order for a chemical reaction to proceed.
  6. Description of a chemical reaction in which there is a net absorption of energy.
  7. A rapid exothermic oxidation-reduction between a material and molecular oxygen.
  8. A polyatomic ion made by adding a proton(hydrogen ion)to a water molecule.
  9. A substance that donates hydrogen ions.
Down
  1. Any substance that increases the rate of a chemical reaction without itself being consumed by the reaction.
  2. A polyatomic ion made by removing a proton(hydrogen ion)from a water molecule.
  3. When a reaction and its reverse act at the same rate.
  4. A substance that accepts hydrogen ions.
  5. The reacting substances in a chemical reaction.
  6. The energy stored in molecules that can be released during a reaction.

15 Clues: A substance that accepts hydrogen ions. • A substance that donates hydrogen ions. • The reacting substances in a chemical reaction. • The new materials formed in a chemical reaction. • When a reaction and its reverse act at the same rate. • The energy stored in molecules that can be released during a reaction. • ...

POV: I told a chemistry joke in class, but there was no reaction 2023-08-21

POV: I told a chemistry joke in class, but there was no reaction crossword puzzle
Across
  1. A combination of two or more substances in which each keeps its own properties,
  2. of conservation of mass; The mass of substances before a chemical reaction is the same as the mass of substances after the reaction,
  3. The small number beside a chemical symbol, letting you know how many atoms are in the reaction
  4. A solid formed from two or more elements, with fixed proportions,
  5. change; the type of change where the molecules chemical composition does not change
  6. A chemical reaction in which heat is absorbed from the surroundings,
  7. The number of atoms of each element must be the same on both sides of a balanced chemical equation,
  8. A substance formed from two or more elements that are chemically combined,
Down
  1. Substance that takes part in a chemical reaction,
  2. A type of chemical reaction in which a compound breaks down into simpler substances, Physical; The type of change where a substance changes its physical appearance, but not its chemical composition,
  3. The process by which a solid turns into a liquid,
  4. change; The type of change where a new substance with different properties is formed and bonds are broken,
  5. A reaction in which two or more substances combine to form a new substance,
  6. The smallest unit of an element that retains its properties,
  7. The type of reaction that releases energy in the form of light or heat.
  8. A substance that cannot be broken down into simpler substances by chemical means, made up of only one type of atom,

16 Clues: Substance that takes part in a chemical reaction, • The process by which a solid turns into a liquid, • The smallest unit of an element that retains its properties, • A solid formed from two or more elements, with fixed proportions, • A chemical reaction in which heat is absorbed from the surroundings, • ...

Garett O Holmes Chapter-13 2016-10-12

Garett O Holmes Chapter-13 crossword puzzle
Across
  1. Description of a chemical reaction in which there is a net release of energy.
  2. the minimum energy required in order for a chemical reaction to proceed.
  3. The reacting substances in a chemical reaction.
  4. A polyatomic ion made by adding a proton(hydrogen ion)to a water molecule.
  5. Description of a chemical reaction in which there is a net absorption of energy.
  6. A substance that accepts hydrogen ions.
  7. The new materials formed in a chemical reaction.
Down
  1. A polyatomic ion made by removing a proton(hydrogen ion)from a water molecule.
  2. A rapid exothermic oxidation-reduction between a material and molecular oxygen.
  3. When a reaction and its reverse act at the same rate.
  4. The energy stored in molecules that can be released during a reaction.
  5. A measure of the acidity of a solution;equal to the negative logarithm of the hydronium ion concentration.
  6. Any substance that increases the rate of a chemical reaction without itself being consumed by the reaction.
  7. Description of a solution in which the hydronium ion concentration ion is equal to the hydroxide ion concentration.
  8. A substance that donates hydrogen ions.

15 Clues: A substance that accepts hydrogen ions. • A substance that donates hydrogen ions. • The reacting substances in a chemical reaction. • The new materials formed in a chemical reaction. • When a reaction and its reverse act at the same rate. • The energy stored in molecules that can be released during a reaction. • ...

Chemical Changes 2023-04-24

Chemical Changes crossword puzzle
Across
  1. ____________ is sometimes taken in or given out during a chemical reaction.
  2. During a chemical reaction, mass is conserved.
  3. A change in which new substances are formed is called a ____________ change.
  4. During respiration, ____________ is broken down in the presence of oxygen to form carbon dioxide and water.
  5. Substances that react with each other are known as ____________.
  6. Rusting occurs when _________ reacts with oxygen and water.
  7. Light and heat are usually given out during ____________.
  8. In a word equation, products are shown are shown on the ______-hand side.
  9. Word equations include the reactants, products and ____________ under which a chemical reaction occurs.
  10. The mass of the reactants is ____________ to the mass of the products in a chemical reaction.
Down
  1. During combustion, a substance is heated in the presence of ____________ to form a one or more new susbtances.
  2. Thermal ____________ occurs when a substance breaks down into simpler substances upon heating.
  3. Chemical changes are usually ____________.
  4. An example of an oxidation reaction is cellular _______________.
  5. When a substance gains oxygen, it undergoes ____________.
  6. An ____________ instead of an '=' sign is used in qord equations.
  7. Substances formed at the end of a reaction are known as ____________.
  8. Calcium ____________ is an example of a substance that undergoes thermal decomposition upon heating.
  9. In a word equation, reactants are shown on the ______-hand side.

19 Clues: Chemical changes are usually ____________. • During a chemical reaction, mass is conserved. • When a substance gains oxygen, it undergoes ____________. • Light and heat are usually given out during ____________. • Rusting occurs when _________ reacts with oxygen and water. • An example of an oxidation reaction is cellular _______________. • ...

Chemistry Extra Credit Crossword 2016-01-18

Chemistry Extra Credit Crossword crossword puzzle
Across
  1. ____ reaction; always yields carbon dioxide and water
  2. _____ composition; the percentage by most of each element in a compound
  3. ____ composition; percentage by most of each element in a compound
  4. relationships among the reactants and products involved in a chemical reaction
  5. central core of an atom
  6. substance that initiates or speeds up a chemical reaction
  7. Gilbert_____; American chemist who proposed the "octet rule"
  8. counting unit which represents Avogadro's number of particles/ojects
  9. element with an atomic number of 92
  10. element with the symbol Xe
Down
  1. _____ reaction; example: AB>A+B
  2. Subatomic particle with a positive charge
  3. chemical_____; recipe for chemical reaction
  4. _____ reagent; reactant in a chemical reaction which is left over
  5. ____mass; total mass of all the elements in a compound (in grams)
  6. element with an atomic weight of 1.0079
  7. _____ bond; bond in which two atoms transfer valance electrons
  8. Group 17 on periodic table
  9. element with an atomic number of 78
  10. electron____; surrounds nucleus in an atom
  11. element with an atomic number of 14
  12. Ion that has lost electron(s)
  13. Ion that has gained electron(s)

23 Clues: central core of an atom • Group 17 on periodic table • element with the symbol Xe • Ion that has lost electron(s) • _____ reaction; example: AB>A+B • Ion that has gained electron(s) • element with an atomic number of 78 • element with an atomic number of 14 • element with an atomic number of 92 • element with an atomic weight of 1.0079 • ...

Crossword: Chemistry MA 2025-04-29

Crossword: Chemistry MA crossword puzzle
Across
  1. Reaction in which a single compound breaks down to form two or more products
  2. Reaction in which an element displaces another element from its solution
  3. The reactions which require energy
  4. The substance/substances which undergo chemical change and is found on the left side of the chemical equation
  5. When fats and oils are oxidised they become
  6. Decomposition reaction carried via heating
  7. Decomposition reaction carried via electric current
  8. Two or more substances combine to form a single product
Down
  1. Loss of oxygen or gain of hydrogen
  2. Decomposition reaction carried via light
  3. Type of reaction in which precipitate is formed
  4. When a metal is attacked by substances around it
  5. The reactions which release energy, usually in the form of heat
  6. chemical reaction where a substance reacts with oxygen, releasing heat and light
  7. Combining power of an element
  8. The new substance/substances formed on the right side of a chemical equation.
  9. Reaction where one reactant gets oxidised while other gets reduced

17 Clues: Combining power of an element • Loss of oxygen or gain of hydrogen • The reactions which require energy • Decomposition reaction carried via light • Decomposition reaction carried via heating • When fats and oils are oxidised they become • Type of reaction in which precipitate is formed • When a metal is attacked by substances around it • ...

Chemistry Crossword 2012-06-09

Chemistry Crossword crossword puzzle
Across
  1. a chemical, present at the start of a chemical reaction, that is used up during the reaction
  2. Bromide the chemical name for LiBr
  3. Compound a pure substance formed from two or more non-metals
  4. The Group 2 elements, the most reactive group on the periodic table
  5. molecule a molecule consisting of only two atoms of either the same or different elements
  6. rapid reaction of a substance with oxygen to produce oxides
  7. a compound that separates into ions when it dissolves in water, producing a solution that conducts electricity
  8. a solid formed from the reaction of two solutions
  9. Property A characteristic behavior that occurs when the substance changes into something new
  10. Oxide the chemical name for BaO
  11. Earth Metals The Group 2 Elements
Down
  1. electrons outer electrons
  2. Ion an ion made up of more than one atom that acts as a single particle
  3. (II) Oxide the chemical name for PbO
  4. ions with a positive charge
  5. acid the chemical name for HCI
  6. for molecular compounds what's the prefix for 4
  7. Gases The Group 18 elements
  8. Oxide the chemical name for BeO
  9. Property a description of a substance that does not involve forming a new substance (colour, texture and density)
  10. a particle in which atoms are joined by covalent bonds
  11. Neither acidic or basic; with a pH of 7
  12. a chemical that is produced during a chemical reaction
  13. ions that have negative charges
  14. Bond The attraction that holds oppositely charged ions together in a compound
  15. Metal The Group 1 Elements

26 Clues: electrons outer electrons • Metal The Group 1 Elements • ions with a positive charge • Gases The Group 18 elements • acid the chemical name for HCI • Oxide the chemical name for BeO • ions that have negative charges • Oxide the chemical name for BaO • Earth Metals The Group 2 Elements • Bromide the chemical name for LiBr • (II) Oxide the chemical name for PbO • ...

Chemical Reactions 2024-03-06

Chemical Reactions crossword puzzle
Across
  1. right side of a chemical equation
  2. left side of a chemical equation
  3. means "produces"
  4. a chemical ___________ is a way to diagram a reaction
  5. absorbs energy
  6. conservation of __________
  7. energy of reaction
  8. releases energy
Down
  1. measures average heat
  2. tells how many atoms of a particular element are in a compound
  3. ______________ energy
  4. lowers activation energy
  5. covalent compound
  6. __________ theory states that the rate of reaction depends on orientation and energy
  7. number used to balance a chemical equation
  8. transition ________________
  9. what makes up a compound

17 Clues: absorbs energy • releases energy • means "produces" • covalent compound • energy of reaction • measures average heat • ______________ energy • lowers activation energy • what makes up a compound • conservation of __________ • transition ________________ • left side of a chemical equation • right side of a chemical equation • number used to balance a chemical equation • ...

Unit 2 Vocab 2025-09-25

Unit 2 Vocab crossword puzzle
Across
  1. energy- energy that is needed to get a reaction started
  2. electron- electron found in the outermost shell of an atom; helps to determine bonding
  3. charged particle that orbits the nucleus in the electron cloud
  4. number-the number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table (also equals the number of electrons in an element)
  5. reaction- a reaction that absorbs energy (absorbs heat)
  6. in a molecule, uneven distribution of electrons (results in (+) and (-) poles) ex. water
  7. basic unit of matter
  8. elements or compounds that enter into a chemical reaction
  9. force of attraction between different kinds of molecules
  10. symbol- one- or two-letter abbreviation for a chemical element name
  11. formed as a result of a chemical reaction
  12. biological catalysts
  13. mass-equal to the total number of protons and neutrons in the nucleus of an atom (based on isotopes)
  14. pure substance that consists entirely of one type of atom
  15. reactant of an enzyme-catalyzed reaction
  16. bonding-- weak attraction between a hydrogen atom and another atom
Down
  1. (chemistry definition) the center of an atom, which contains the protons and neutrons
  2. reaction- process that changes, or transforms, one set of chemicals into another set of chemicals
  3. found in the nucleus that has no charge
  4. bond- type of bond between atoms in which the electrons are shared
  5. a combination of 2 or more elements connected by bonds
  6. positively charged particle found in the nucleus of an atom
  7. action-- tendency of water to rise in a thin tube
  8. attraction between molecules of the same substance
  9. substance that speeds up the rate of a chemical reaction
  10. capacity (specific heat)-- the amount of heat needed to raise the temperature of 1 gram of a substance 1 degree Celsius (°C)
  11. reaction- a reaction that releases energy (gives off heat)

27 Clues: basic unit of matter • biological catalysts • found in the nucleus that has no charge • reactant of an enzyme-catalyzed reaction • formed as a result of a chemical reaction • action-- tendency of water to rise in a thin tube • attraction between molecules of the same substance • a combination of 2 or more elements connected by bonds • ...

PS: Chemistry P2 2021-09-28

PS: Chemistry P2 crossword puzzle
Across
  1. Any change that doesn’t change the identity. Observed with senses. Determined without changing matter.
  2. The transition of a substance directly from the solid to the gas state, without passing through the liquid state
  3. A chemical reaction where energy is released from the system to the surroundings
  4. The outside of the atom. Where electron's are located.
  5. One of the fundamental states of matter. A high-energy state of atoms and molecules.
  6. A substance that speeds up a chemical reaction, but itself does not undergo any permanent chemical change
  7. An element or compound produced by a chemical reaction.
  8. The center of the atom. Where the Proton and neutron are located.
  9. A reaction in which two nuclei combine to form a nucleus.
  10. A neutral particle located in the nucleus with a charge of zero.
Down
  1. A reaction in which the nucleus of an atom splits into two or more smaller, lighter nuclei.
  2. Any change that does change the identity. Indicates how substance reacts with something else. Matter will be changed into a new substance
  3. Atoms combined in fix quantities. Atoms can be separated only by destroying substance.
  4. Energy in chemical reactions, it is the energy required to break chemical bonds to allow the reaction to proceed to products
  5. Physical change of matter that are reversible.
  6. An element or compound that enters into a chemical reaction.
  7. A positively charged subatomic particle located in the nucleus of an atom.
  8. One of the fundamental states of matter in which the molecules have both a fixed volume but not a fixed shape
  9. One of the fundamental states of matter in which the molecules do not have a fixed volume or shape. Molecules move the fastest.
  10. A negatively charged subatomic particle located outside of the nucleus of the atom.
  11. Atoms of the same element with identical atomic numbers but different atomic masses due to different number of neutrons in the nucleus
  12. One of the fundamental states of matter in which the molecules have both a fixed volume and a fixed shape. Molecules move the slowest.
  13. A chemical reaction where energy is absorbed by the system from the surroundings

23 Clues: Physical change of matter that are reversible. • The outside of the atom. Where electron's are located. • An element or compound produced by a chemical reaction. • A reaction in which two nuclei combine to form a nucleus. • An element or compound that enters into a chemical reaction. • A neutral particle located in the nucleus with a charge of zero. • ...

26 Terms from Chapter 2 2022-03-21

26 Terms from Chapter 2 crossword puzzle
Across
  1. a short easy way to show a chemical reaction using symbols instead of words
  2. a reaction that releases energy in the form of heat
  3. a rapid reaction between oxygen and a substance called fuel
  4. the substances you have at the beginning
  5. a number placed in front of a chemical formula in an equation
  6. a characteristic of a substance that describes its ability to change into other substances
  7. a material that increases the rate of a reaction by lowering the activation energy
  8. the cells in your body contain biological catalysts
  9. a characteristic of a substance that can be observed without changing the substance into another substance
  10. anything that has mass and takes up space
  11. a material that releases energy when it burns
  12. a solid that forms from a solution during a chemical reaction
  13. a principal that states that during a chemical reaction, matter is not created or destroyed
  14. the amount of substance given volume
  15. a material used to decrease the rate of a reaction
  16. when two or more elements or compounds combine to make a more complex substance
  17. matter is not allowed to enter or leave
Down
  1. a reaction in which energy is absorbed
  2. a change in matter that produces one or more new substances
  3. a change that alters the form or appearance of a substance but that does not make a substance into another substance
  4. when the reaction is complete
  5. the study of matter and how matter changes
  6. when one element replaces another in a compound or when two elements in different compounds trade places
  7. the minimum amount of energy needed to start a chemical reaction
  8. breaks down compounds into simpler products
  9. matter can enter from or escape to the surroundings

26 Clues: when the reaction is complete • the amount of substance given volume • a reaction in which energy is absorbed • matter is not allowed to enter or leave • the substances you have at the beginning • anything that has mass and takes up space • the study of matter and how matter changes • breaks down compounds into simpler products • ...

matter vocab 2025-04-24

matter vocab crossword puzzle
Across
  1. converted into one or more substances
  2. chemical substance formed into different ones
  3. substances convert to one
  4. stuff that takes up space
  5. changes affecting the form
  6. three dimensional space
  7. from a chemical reaction
  8. a combination
  9. atoms forming to molecules
  10. smallest particle
  11. a substance that can not be broken
  12. molecules sticking together
Down
  1. speeds up a chemical reaction
  2. a substance that can be observed
  3. transferred energy
  4. a group of atoms
  5. a property of a substance
  6. a degree of heat
  7. releasing energy
  8. a branch of science
  9. two or more elements combined
  10. a reaction that observes heat
  11. amount of matter in a object
  12. transferred heat

24 Clues: a combination • a group of atoms • a degree of heat • releasing energy • transferred heat • smallest particle • transferred energy • a branch of science • three dimensional space • from a chemical reaction • a property of a substance • substances convert to one • stuff that takes up space • changes affecting the form • atoms forming to molecules • molecules sticking together • ...

Keating Brown Student Product 2024-02-08

Keating Brown Student Product crossword puzzle
Across
  1. What is the result of a chemical reaction
  2. What are enzymes made of
  3. pH level at 7 is
  4. Denature of the pH level is
  5. Denature of the Temp is
  6. The enzyme becomes what when it is too hot or cold
  7. Molecules that speed up chemical reactions
  8. A chemical reaction in the body
  9. Small organic molecules bonded to the enzyme
  10. Hydrogen peroxide plus water and oxygen make
  11. What can change the shape of an enzyme
  12. pH level 0-6.9 is
Down
  1. Most enzymes are...
  2. The specific fit of enzymes
  3. Cleaning supplies are...
  4. pH level between 8-14 is
  5. Where do chemical reactions occur
  6. Lemons are...
  7. What controls the chemical reactions in the body
  8. The molecules where enzymes act on
  9. Where the chemical reaction occurs
  10. If the enzyme does not function correctly it is
  11. A graph that goes up then mellows out and stays straight
  12. Enzymes are...
  13. Enzymes names end in -

25 Clues: Lemons are... • Enzymes are... • pH level at 7 is • pH level 0-6.9 is • Most enzymes are... • Enzymes names end in - • Denature of the Temp is • Cleaning supplies are... • pH level between 8-14 is • What are enzymes made of • The specific fit of enzymes • Denature of the pH level is • A chemical reaction in the body • Where do chemical reactions occur • The molecules where enzymes act on • ...

Chemical Reactions. By:Rishi Shah 10R 2024-04-30

Chemical Reactions. By:Rishi Shah 10R crossword puzzle
Across
  1. The chemical reaction in which both oxidation and reduction occur together.
  2. The eating up of metals as a result of their exposure to air moisture and other gases in the atmosphere.
  3. The chemical reaction which takes place when a single substance decomposes to give two or more substances
  4. The decomposition reaction which break down a compound in the presence of electrical energy.
  5. Starting materials which are written on the left-hand side of the equation.
  6. The decomposition reactions which break down a compound on heating.
  7. A substance (agent) in a redox reaction which gives oxygen or gains hydrogen.
Down
  1. The chemical reaction which takes place when two compounds exchange their ions to form new compounds.
  2. The chemical reaction which takes place when two or more substances combine to form a single substance.
  3. the decomposition reactions which break down a compound in the presence of light.
  4. The chemical reaction which takes place when one or a group of atoms is replaced by another atom or group of atoms.
  5. Written on right hand side of a chemical reaction.
  6. The chemical reaction in which insoluble salts are formed.
  7. A substance (agent) in a redox reaction which gives hydrogen or gains oxygen.
  8. The oxidation of oil or fats in food resulting in bad taste and smell.

15 Clues: Written on right hand side of a chemical reaction. • The chemical reaction in which insoluble salts are formed. • The decomposition reactions which break down a compound on heating. • The oxidation of oil or fats in food resulting in bad taste and smell. • The chemical reaction in which both oxidation and reduction occur together. • ...

unit 2 vocab 2021-09-29

unit 2 vocab crossword puzzle
Across
  1. reaction a reaction that releases energy
  2. bilogical catalyst
  3. mass equal to the total number of protons and nuetrons in the nucleus of an atom
  4. reaction a reaction that absorbs energy
  5. number the number of protons in the nucles of an atom
  6. small chemical unit that makes up a polymer
  7. symbol one-or two-leter abbreviation for a chemical element name
  8. electron electron found in the outer most shell of an atom
  9. the center of an atom
  10. reactant of an enzyme-catalyzed reaction
  11. acid macromolecule containing hydrogen
  12. energy energy that is needed to get a reaction started
  13. substance formed as a reslut of a chemicals
  14. macromolecule made up of amino acids
  15. acid compoud with an amino group
Down
  1. compound made up of carbon,hydrogen and oxygen atoms
  2. reaction process that changes or transforms, one set of chemicals into another set of chemicals
  3. elements or compounds that enter into a chemical reaction
  4. particle found in the nucleus
  5. the basic unit of matter
  6. subunit of which nucleic acids
  7. pure substance that consist entirely of one type of atom
  8. bond type of bond between atoms in which the electrons are shared
  9. negatively charged particels
  10. substance that speeds up the rate of a chemical reaction
  11. molecules composed of many molecule made up of many atoms
  12. a combination of 2 or more elements connected by bonds
  13. positively charged particles found in the nucleus
  14. macromolecule made mostly from carbon and hydrogen atoms

29 Clues: bilogical catalyst • the center of an atom • the basic unit of matter • negatively charged particels • particle found in the nucleus • subunit of which nucleic acids • acid compoud with an amino group • macromolecule made up of amino acids • acid macromolecule containing hydrogen • reaction a reaction that absorbs energy • reaction a reaction that releases energy • ...

CHE 2 EC Crossword 2016-11-02

CHE 2 EC Crossword crossword puzzle
Across
  1. A chemical reaction where multiple smaller parts fuse to form a greater compound
  2. the smallest unit of matter used in chemistry
  3. a phrase that means many atoms
  4. a unit for mass
  5. atoms found on the right side of the periodic table
  6. "8 is great" all atoms want 8 electrons in their outside shell
  7. The law that states that matter can not be "used up" in a reaction. Instead it is transferred from one place to another
  8. Electrons on the outside shell of an atom.
  9. a unit for volume
  10. Atoms that lose electrons and hold a positive charge
  11. Atoms that gain electrons and hold a positive charge
Down
  1. A chemical reaction where one element kicks another element out of a chemical bond
  2. atoms found on the left side of the periodic table
  3. A chemical reaction where the elements in two compounds swap partners with one another
  4. The scientist who thought up the idea of the mole
  5. A unit representing 602 sextillion of something.
  6. A chemical reaction where one bigger compound breaks down into smaller parts
  7. A chemical reaction where oxygen burns a fuel producing carbon dioxide and water.

18 Clues: a unit for mass • a unit for volume • a phrase that means many atoms • Electrons on the outside shell of an atom. • the smallest unit of matter used in chemistry • A unit representing 602 sextillion of something. • The scientist who thought up the idea of the mole • atoms found on the left side of the periodic table • atoms found on the right side of the periodic table • ...

Chemical Reactions 2022-04-25

Chemical Reactions crossword puzzle
Across
  1. One of the evidences of a chemical reaction that can be smelled.
  2. New substances formed in a chemical reaction.
  3. One of the evidences of a chemical reaction that can be seen.
  4. Solid deposit in a solution.
  5. Substances that participate in a chemical reaction.
Down
  1. A chemical reaction that requires heat.
  2. A chemical reaction in which heat is released to the surroundings.
  3. The change that always produces a new substance.
  4. The change that is reversible.
  5. Formation of gas.
  6. In a chemical reaction mass is neither ... nor ...
  7. In a chemical reaction mass is neither ... nor ...
  8. The scientist who stated The Law of Conservation of Mass.

13 Clues: Formation of gas. • Solid deposit in a solution. • The change that is reversible. • A chemical reaction that requires heat. • New substances formed in a chemical reaction. • The change that always produces a new substance. • In a chemical reaction mass is neither ... nor ... • In a chemical reaction mass is neither ... nor ... • ...

Chemical Reactions 2022-04-25

Chemical Reactions crossword puzzle
Across
  1. One of the evidences of a chemical reaction that can be smelled.
  2. New substances formed in a chemical reaction.
  3. One of the evidences of a chemical reaction that can be seen.
  4. Solid deposit in a solution.
  5. Substances that participate in a chemical reaction.
Down
  1. A chemical reaction that requires heat.
  2. A chemical reaction in which heat is released to the surroundings.
  3. The change that always produces a new substance.
  4. The change that is reversible.
  5. Formation of gas.
  6. In a chemical reaction mass is neither (7) nor (9).
  7. In a chemical reaction mass is neither (7) nor (9).
  8. The scientist who stated The Law of Conservation of Mass.

13 Clues: Formation of gas. • Solid deposit in a solution. • The change that is reversible. • A chemical reaction that requires heat. • New substances formed in a chemical reaction. • The change that always produces a new substance. • In a chemical reaction mass is neither (7) nor (9). • In a chemical reaction mass is neither (7) nor (9). • ...

Chemical Reactions Review Crossword 2022-05-09

Chemical Reactions Review Crossword crossword puzzle
Across
  1. a chemical _____ uses symbols and formulas to show chemical reactions
  2. the # of molecules in a substance
  3. substance made of the combined atoms of two or more elements
  4. a chemical ____ is one or two letters used to represent an element
  5. type of bond that is formed in HCl
  6. a type of reaction in which heat is absorbed
  7. type of bond that involves two metals
Down
  1. a process in which substances undergo chemical change
  2. the substances that are formed in a chemical reaction
  3. tells what elements a compound contains and the exact number of the atoms of those elements
  4. a chemical ____ is a combination of symbols that shows the ratio of elements in a compound
  5. type of bond that is formed in NaCl
  6. the # of atoms of each element in the molecule
  7. the substances that undergo the chemical reaction
  8. a type of reaction in which heat is given off
  9. a solid that forms from a solution during a chemical reaction

16 Clues: the # of molecules in a substance • type of bond that is formed in HCl • type of bond that is formed in NaCl • type of bond that involves two metals • a type of reaction in which heat is absorbed • a type of reaction in which heat is given off • the # of atoms of each element in the molecule • the substances that undergo the chemical reaction • ...

Chemical reactions: OBSERVATIONS 2025-06-04

Chemical reactions: OBSERVATIONS crossword puzzle
Across
  1. Another word for bubbles of gas in a liquid(13)
  2. abbreviation for precipitate(3)
  3. A change in this can show energy is absorbed or released. (11)
  4. A noticeable change in this can indicate a chemical reaction. (5)
  5. A slow chemical reaction between iron, oxygen, and water. (7)
  6. A sudden release of energy, gas, and heat in a reaction. (9)
  7. A change that cannot return to its original state. (12)
  8. Observed when a gas is produced in a chemical reaction. (8)
  9. The change of a liquid to a solid. (8)
Down
  1. A change that results in the formation of a new substance. (8)
  2. The change of a gas to a liquid. (12)
  3. The change of a liquid to a gas. (11)
  4. A chemical reaction that involves burning. (10)
  5. The change of a solid to a liquid. (7)
  6. A solid formed from a chemical reaction in a solution. (11)
  7. A change that can go back to its original state. (10)
  8. A frying egg is an example of this type of change. (12)
  9. A change that does not result in a new substance. (8)

18 Clues: abbreviation for precipitate(3) • The change of a gas to a liquid. (12) • The change of a liquid to a gas. (11) • The change of a solid to a liquid. (7) • The change of a liquid to a solid. (8) • Another word for bubbles of gas in a liquid(13) • A chemical reaction that involves burning. (10) • A change that can go back to its original state. (10) • ...

ashley h crossword puzzle 2017-02-27

ashley h crossword puzzle crossword puzzle
Across
  1. combination or composition, in particular
  2. replacement reaction replaces one element for another in a compound
  3. a substance that takes part in and undergoes change during a reaction
  4. the amount of product obtained in a chemical reaction
  5. the state or process of rotting; decay
  6. cause (a substance) to be deposited in solid form from a solution
  7. replacement exchanges the cations (or the anions) of two ionic compounds
  8. consisting of two atoms
Down
  1. a substance produced during a natural, chemical, or manufacturing process
  2. equation symbolic representation of a chemical reaction in the form of symbols and formulae
  3. chemical decomposition produced by passing an electric current through a liquid or solution containing ions
  4. a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change
  5. ion charged chemical species (ion) composed of two or more atoms covalently bonded or of a metal complex that can be considered to be acting as a single unit
  6. A number or symbol multiplied with a variable or an unknown quantity in an algebraic term
  7. of or containing water, typically as a solvent or medium
  8. the process or result of oxidizing or being oxidized.
  9. the action or fact of making a specified thing smaller or less in amount, degree, or size
  10. apid chemical combination of a substance with oxygen, involving the production of heat and light
  11. compound a chemical compound that contains exactly two different elements

19 Clues: consisting of two atoms • the state or process of rotting; decay • combination or composition, in particular • the amount of product obtained in a chemical reaction • the process or result of oxidizing or being oxidized. • of or containing water, typically as a solvent or medium • cause (a substance) to be deposited in solid form from a solution • ...

Unit 5 Vocabulary Chemistry 2025-12-11

Unit 5 Vocabulary Chemistry crossword puzzle
Across
  1. Two non-metals bonded together
  2. When two or more elements are chemically bonded together
  3. A type of chemical reaction where both of the reactants combine
  4. A type of chemical reaction where a hydrocarbon and oxygen react, and oxygen and carbon dioxide are produced
  5. A type of chemical reaction where both the cations and anions switch places
  6. More than one of the same element bonded together
  7. The starting chemicals of a reaction before it occurs
  8. There are different amounts of electrons when there are these of an element
Down
  1. A type of chemical reaction where two anions or two cations switch places
  2. A type of chemical reaction where the combined reactants break apart
  3. The parts left after the chemical reaction occurs
  4. The number that goes before the chemical formula that tells us how many of the compound there are
  5. How many atoms there are of the element
  6. One metal and one non-metal bonded together

14 Clues: Two non-metals bonded together • How many atoms there are of the element • One metal and one non-metal bonded together • The parts left after the chemical reaction occurs • More than one of the same element bonded together • The starting chemicals of a reaction before it occurs • When two or more elements are chemically bonded together • ...

chemical reaction 2022-05-13

chemical reaction crossword puzzle
Across
  1. - materials end result
  2. - (burnt food) - _____ reacts with oxygen to form ____ dioxide
  3. - a chemical reaction that needs heat
  4. - makes a chemical reaction go faster
  5. - two or more substances combined but not chemically
  6. monoxide, CO - colourless, toxic, odourless gas
Down
  1. - iron reacts with water and oxygen
  2. - starting materials
  3. - a chemical reaction that gives out heat
  4. compound - joined by chemical bonds

10 Clues: - starting materials • - materials end result • - iron reacts with water and oxygen • compound - joined by chemical bonds • - a chemical reaction that needs heat • - makes a chemical reaction go faster • - a chemical reaction that gives out heat • monoxide, CO - colourless, toxic, odourless gas • - two or more substances combined but not chemically • ...

Chapter 7 Vocabulary 2024-01-02

Chapter 7 Vocabulary crossword puzzle
Across
  1. 6.02214076 × 1023 of some chemical unit, be it atoms, molecules, ions, or others.
  2. the species formed from chemical reactions.
  3. a reaction in which a substance reacts with oxygen gas, releasing energy in the form of light and heat.
  4. the mass of a given chemical element or chemical compound (g) divided by the amount of substance (mol).
  5. a chemical reaction that involves the release of energy in the form of heat or light.
  6. a number placed in front of a chemical symbol or formula that shows how many atoms or molecules of the substance are involved in the reaction
  7. a chemical process in which two or more simple elements or compounds combine to form a more complex product
  8. a substance that takes part in and undergoes change during a reaction.
  9. reactions that involve the transfer of electrons from one species to another.
  10. a reaction in which one element replaces a similar element in a compound
Down
  1. a reaction in which the positive and negative ions of two ionic compounds exchange places to form two new compounds
  2. symbolic representations of chemical reactions in which the reactants and the products are expressed in terms of their respective chemical formulae.
  3. any chemical reaction that absorbs heat from its environment
  4. a reaction in which a compound breaks down into two or more simpler substances
  5. energy stored in the bonds of atoms and molecules.

15 Clues: the species formed from chemical reactions. • energy stored in the bonds of atoms and molecules. • any chemical reaction that absorbs heat from its environment • a substance that takes part in and undergoes change during a reaction. • a reaction in which one element replaces a similar element in a compound • ...

The Progress of Chemical Reactions 2026-03-05

The Progress of Chemical Reactions crossword puzzle
Across
  1. A biological catalyst, usually a protein, that speeds up specific chemical reactions in living organisms.
  2. The substances formed as a result of a chemical reaction, written on the right side of a chemical equation.
  3. A high-energy, unstable state during a chemical reaction where old bonds are breaking and new bonds are forming.
  4. A substance that increases the rate of a chemical reaction by lowering the activation energy without being consumed.
  5. The specific reactant molecule that an enzyme acts upon.
  6. A reaction that releases energy (usually heat) into the surroundings; products have less energy than reactants.
  7. A theoretical representation of the energy pathway as reactants are transformed into products.
  8. The total heat content of a system, often measured as the change in heat during a reaction.
Down
  1. The minimum amount of energy required to initiate a chemical reaction.
  2. The starting substances in a chemical reaction, written on the left side of a chemical equation.
  3. A reaction that occurs through a series of simpler steps known as elementary steps.
  4. A reaction that absorbs energy from the surroundings; products have more energy than reactants.
  5. The specific region on an enzyme where the substrate binds and the reaction takes place.
  6. A reaction that occurs in a single event; reactants convert directly to products without intermediates.
  7. A process in which a protein or enzyme loses its shape (and function) due to external stress like high heat or pH changes.

15 Clues: The specific reactant molecule that an enzyme acts upon. • The minimum amount of energy required to initiate a chemical reaction. • A reaction that occurs through a series of simpler steps known as elementary steps. • The specific region on an enzyme where the substrate binds and the reaction takes place. • ...

Chapter 6 Metabolism 2024-03-06

Chapter 6 Metabolism crossword puzzle
Across
  1. substance that forms as result of reaction
  2. of activation energy that must be added in order for molecules to react with oneanother
  3. reactions reactions that occur simultaneously
  4. Meausure of disorder or randomness in a system
  5. energy Energy associated with motion
  6. metabolic process that breaks down large molecules into smaller ones, catabolic metabolism
  7. Sum of chemical reactions that occur in the cell
  8. RNA molecule that functions as an enzyme that can catalyze a chemical reaction
  9. chemical reaction in which smaller molecules form into bigger ones
  10. reactions Chemical reactions that require an imput of energy
  11. sites region of an enzyme where the substrate binds and where a chemical reaction occurs
  12. organic nutrients that is required in small amount ts for metabolic reactions
Down
  1. a paired set of chemical reactions in which one molecule gives up electrons, while another molecule accepts electrons
  2. Nucleotide with 2 phosphate groups that become ATP
  3. organic catalyst, protein that spends up reactions in cells
  4. reaction chemical reaction that releases eneregy
  5. energy energy in a system that is capable of doing work
  6. nucleotide with 3 phosphate groups, breakdown of ATP
  7. of therodynamics Two laws explaining energy and its relation and exchange
  8. energy Stored energy in a potentially usable form, as a result of location or spatial arrangement
  9. nonprotein assistant required by an enzyme in order to function
  10. nonprotein enzyme organic molecule that aids that action of the enzyme which is loosely bound
  11. fit model Change in the shape of enzymes active shape that enhances that active site and its substrates
  12. Subtance that participates in reaction
  13. inhabition Means by which cells regulate enzyme activity, may be competitive or non competitive inhabition
  14. pathways Series of linked reactions, beginning with a particular reactant and terminating with end product
  15. Capacity to do work and bring about change

27 Clues: energy Energy associated with motion • Subtance that participates in reaction • substance that forms as result of reaction • Capacity to do work and bring about change • reactions reactions that occur simultaneously • Meausure of disorder or randomness in a system • Sum of chemical reactions that occur in the cell • reaction chemical reaction that releases eneregy • ...

Unit 2 Vocab 2024-09-17

Unit 2 Vocab crossword puzzle
Across
  1. molecule that provides energy for cellular processes
  2. molecule that has a positive and negative end
  3. large molecule made from repeating monomers
  4. energy needed to start a chemical reaction
  5. long hydrocarbon chain with a carboxyl group
  6. single-stranded molecule involved in protein synthesis
  7. molecule with genetic instructions
  8. region on an enzyme where the substrate binds and reaction occurs
  9. hydrophobic molecule used for energy storage
  10. chemical reaction where two molecules combine to release water
  11. prefix meaning water
  12. very large molecule consisting of many atoms
  13. suffix meaning amino acid
  14. prefix meaning many
  15. prefix meaning away from
  16. simplest form of carbohydrate
  17. suffix meaning hormone
  18. building blocks of proteins
  19. prefix meaning large
Down
  1. sugar or starch used for energy
  2. lipid with two fatty acids and a phosphate group
  3. molecules like dna and rna that store/transfer genetic information
  4. carbon-based molecule
  5. carbohydrate composed of long chains of monosaccharides
  6. weak bond between bases in a dna molecule
  7. molecule made of amino acids
  8. substance that speeds up a chemical reaction without being used up
  9. suffix meaning enzyme
  10. molecule on which an enzyme acts
  11. small molecule that can join others to form a polymer
  12. basic unit of nucleic acids
  13. suffix meaning protein
  14. protein that speeds up biochemical reactions
  15. chain of amino acids linked by peptide bonds
  16. prefix meaning with
  17. chemical reaction that breaks a compound with water
  18. suffix meaning sugar
  19. chemical bond where atoms share electrons
  20. substance formed as a result of a chemical reaction
  21. prefix meaning one
  22. substance that starts a chemical reaction

41 Clues: prefix meaning one • prefix meaning with • prefix meaning many • prefix meaning water • suffix meaning sugar • prefix meaning large • carbon-based molecule • suffix meaning enzyme • suffix meaning protein • suffix meaning hormone • prefix meaning away from • suffix meaning amino acid • basic unit of nucleic acids • building blocks of proteins • molecule made of amino acids • ...

Chemical Reactions 2025-01-27

Chemical Reactions crossword puzzle
Across
  1. - ^-A measure of how much solute can dissolve in a given solvent at a given temperature.
  2. change - ^-A change in a substance that does not involve a change in the identity of the substance
  3. - ^-A mixture containing small, undissolved particles that do not settle out.
  4. system - ^-A system in which no matter is allowed to enter or leave
  5. - ^-A long molecule consisting of many similar or identical monomers linked together.
  6. - ^-A mixture that forms when one substance dissolves another.
  7. resource - ^-Anything in the environment that humans use.
  8. - ^-A substance produced in a chemical reaction
  9. - ^-A chemical reaction that breaks down compounds into simpler products.
  10. - ^-A chemical substance that is present at the start of a chemical reaction
  11. reaction - ^-a chemical reaction in which heat is released to the surroundings
  12. - ^-A mixture in which particles can be seen and easily separated by settling or filtration
  13. system - ^-A system in which matter can enter from or escape to the surroundings.
Down
  1. - ^-(adj.) made or put together by people; (n.) something artificial
  2. change - ^-A change that occurs when one or more substances change into entirely new substances with different properties.
  3. - ^-Melt, Make a solution out of, or turn into a liquid
  4. - ^-A liquid substance capable of dissolving other substances
  5. reaction - ^-A reaction that ABSORBS energy in the form of heat
  6. - ^-A substance that is dissolved in a solution.
  7. - ^-to repeat a research study, usually with different participants and in different situations, to confirm the results of the original study
  8. - ^-how fast or slow something happens.
  9. of Conservation of Matter - ^-Matter is not created nor destroyed in any chemical or physical change
  10. - ^-material composed of two or more elements or compounds that are physically mixed together but not chemically combined

23 Clues: - ^-how fast or slow something happens. • - ^-A substance produced in a chemical reaction • - ^-A substance that is dissolved in a solution. • - ^-Melt, Make a solution out of, or turn into a liquid • resource - ^-Anything in the environment that humans use. • - ^-A liquid substance capable of dissolving other substances • ...

Unit 6 Chemical Patterns Review 2024-08-23

Unit 6 Chemical Patterns Review crossword puzzle
Across
  1. a product from acid carbonate reactions
  2. a change where matter changes but not the chemical identity
  3. slippery substance that have bitter taste
  4. new substances formed during a chemical reaction
  5. a compound made up of two or more chemical components that are not chemically linked
  6. a logarithmic scale used to specify the acidity or basicity of aqueous solution
  7. original substances in a chemical reaction
  8. A substance that cannot be broken down into simpler substances by chemical means
Down
  1. large number in from of a chemical formula
  2. corrosive substances that are sour
  3. substances used to tell whether a material is an acid or base
  4. reaction of an acid and base
  5. lots of these ions present in bases
  6. small number after an element in chemical equation
  7. a change where a new chemical reaction forms new products
  8. lots of these ions present in acids
  9. a substance made from two or more different elements that have been chemically joined

17 Clues: reaction of an acid and base • corrosive substances that are sour • lots of these ions present in bases • lots of these ions present in acids • a product from acid carbonate reactions • slippery substance that have bitter taste • large number in from of a chemical formula • original substances in a chemical reaction • new substances formed during a chemical reaction • ...

chapter 16 gabe h 2017-04-26

chapter 16 gabe h crossword puzzle
Across
  1. that inhibits someone or something
  2. that increases the rate of a chemical reaction
  3. or factor that measures some property
  4. used to preserve foodstuffs
  5. reaction/separation of a substance into two
  6. mass/a molecule is the sum of the atomic weights of the atoms in the empirical
  7. mass/ physical property defined as the mass of a given substance
  8. substance precipitated from a solution.
Down
  1. by the release of heat.
  2. equation/ representation, using chemical symbols in a form
  3. displacement reaction/is a type of oxidation-reductionchemical reaction when an element or ion moves out of one
  4. on or capable of the internal generation of heat
  5. displacement reaction/When a chemical reaction occurs
  6. that takes part in and undergoes change during a reaction
  7. reaction/process of joining two substances together to form one complex compound.
  8. quantity obtained by multiplying quantities together

16 Clues: by the release of heat. • used to preserve foodstuffs • that inhibits someone or something • or factor that measures some property • substance precipitated from a solution. • reaction/separation of a substance into two • that increases the rate of a chemical reaction • on or capable of the internal generation of heat • quantity obtained by multiplying quantities together • ...

Tic-tac-toe crossword puzzle 24 words 2022-10-20

Tic-tac-toe crossword puzzle 24 words crossword puzzle
Across
  1. change A change of one substance into another substance
  2. The number written slightly below and to the right of a chemical symbol that shows how many atoms of an element are in a compound
  3. change A usually reversible change in the physical properties of a substance, as size and shape
  4. A substance that is present at the beginning of a chemical reaction, takes part in the reaction, and is changed into a new substance
  5. A substance made up of two or more different types of atoms bonded together
  6. An atom of one element that has a different number of neutrons than another atom of the same element
  7. A negatively charged particle located outside of an atom’s nucleus about 2000 times smaller than either a proton or neutron
  8. number The total number of protons in an atom’s nucleus
  9. A combination of two or more substances that do not combine chemically, but remain the same individual substances
  10. The number before a chemical formula indicating how many molecules are involved in a chemical reaction
  11. of conservation of mass A scientific law stating that during a chemical reaction, matter is not created nor destroyed
  12. A substance that is not uniform throughout
  13. A neutral particle located in an atom’s nucleus
Down
  1. A substance that increases the rate of a chemical reaction but is not consumed by the reaction
  2. A group of atoms that are held together by covalent bonds so that they move together
  3. A substance formed by a chemical reaction; made by the rearrangement of atoms and bonds in reactants
  4. A positively charged particle located in an atom’s nucleus
  5. A substance that increases the rate of a chemical reaction but is not consumed by the reaction
  6. mass number The total number of protons and neutrons in an atom’s nucleus
  7. A substance that cannot be broken down into a simpler substance by ordinary
  8. A solid substance that forms as a result of a chemical reaction between chemicals in two liquids
  9. A substance that is evenly spread throughout. Particles not distinguishable
  10. a vertical column in the periodic table of the elements that have similar properties
  11. a horizontal row in the periodic table of the elements that have varying properties

24 Clues: A substance that is not uniform throughout • A neutral particle located in an atom’s nucleus • change A change of one substance into another substance • number The total number of protons in an atom’s nucleus • A positively charged particle located in an atom’s nucleus • mass number The total number of protons and neutrons in an atom’s nucleus • ...

Chemical reactions: OBSERVATIONS 2025-06-04

Chemical reactions: OBSERVATIONS crossword puzzle
Across
  1. Another word for bubbles of gas in a liquid(13)
  2. abbreviation for precipitate(3)
  3. A change in this can show energy is absorbed or released. (11)
  4. A noticeable change in this can indicate a chemical reaction. (5)
  5. A slow chemical reaction between iron, oxygen, and water. (7)
  6. A sudden release of energy, gas, and heat in a reaction. (9)
  7. A change that cannot return to its original state. (12)
  8. Observed when a gas is produced in a chemical reaction. (8)
  9. The change of a liquid to a solid. (8)
Down
  1. A change that results in the formation of a new substance. (8)
  2. The change of a gas to a liquid. (12)
  3. The change of a liquid to a gas. (11)
  4. A chemical reaction that involves burning. (10)
  5. The change of a solid to a liquid. (7)
  6. A solid formed from a chemical reaction in a solution. (11)
  7. A change that can go back to its original state. (10)
  8. A frying egg is an example of this type of change. (12)
  9. A change that does not result in a new substance. (8)

18 Clues: abbreviation for precipitate(3) • The change of a gas to a liquid. (12) • The change of a liquid to a gas. (11) • The change of a solid to a liquid. (7) • The change of a liquid to a solid. (8) • Another word for bubbles of gas in a liquid(13) • A chemical reaction that involves burning. (10) • A change that can go back to its original state. (10) • ...

Chemical Equations 2025-10-09

Chemical Equations crossword puzzle
Across
  1. - A number placed before a chemical formula in an equation to show how many molecules or atoms take part.
  2. - A statement based on repeated experimental observations that describes some aspect of the world.
  3. - A process in which substances change into new substances.
  4. - A substance with a distinct composition that can be involved in a chemical reaction.
  5. - When a compound or molecule does not change easily.
  6. - A combination of symbols that shows the elements in a compound and their proportions.
  7. - The principle that matter cannot be created or destroyed in a chemical reaction.
  8. - A substance made of only one kind of atom.
  9. - A substance made from two or more different elements chemically combined.
Down
  1. - Related to matter and energy but not involving a change in chemical composition.
  2. - A substance formed as a result of a chemical reaction.
  3. - A symbolic representation of a chemical reaction showing reactants and products.
  4. - To make the number of atoms of each element equal on both sides of a chemical equation.
  5. - The amount of matter in an object or substance.
  6. - A group of two or more atoms bonded together representing the smallest unit of a compound.
  7. - A small number written to the lower right of an element symbol showing how many atoms of the element are in the molecule.
  8. - The smallest unit of an element that retains the properties of that element.
  9. - A substance that starts a chemical reaction.
  10. - The process where substances interact and change to form new substances.

19 Clues: - A substance made of only one kind of atom. • - A substance that starts a chemical reaction. • - The amount of matter in an object or substance. • - When a compound or molecule does not change easily. • - A substance formed as a result of a chemical reaction. • - A process in which substances change into new substances. • ...

PS: Chemistry P2 2021-09-28

PS: Chemistry P2 crossword puzzle
Across
  1. The center of the atom. Where the Proton and neutron are located.
  2. A negatively charged subatomic particle located outside of the nucleus of the atom.
  3. One of the fundamental states of matter. A high-energy state of atoms and molecules.
  4. One of the fundamental states of matter in which the molecules do not have a fixed volume or shape. Molecules move the fastest.
  5. Physical change of matter that are reversible. solid One of the fundamental states of matter in which the molecules have both a fixed volume and a fixed shape. Molecules move the slowest.
  6. An element or compound produced by a chemical reaction.
  7. One of the fundamental states of matter in which the molecules have both a fixed volume but not a fixed shape
  8. Any change that does change the identity. Indicates how substance reacts with something else. Matter will be changed into a new substance
  9. A substance that speeds up a chemical reaction, but itself does not undergo any permanent chemical change
  10. A reaction in which the nucleus of an atom splits into two or more smaller, lighter nuclei.
  11. A reaction in which two nuclei combine to form a nucleus.
  12. Atoms of the same element with identical atomic numbers but different atomic masses due to different number of neutrons in the nucleus
Down
  1. An element or compound that enters into a chemical reaction.
  2. The transition of a substance directly from the solid to the gas state, without passing through the liquid state
  3. A neutral particle located in the nucleus with a charge of zero.
  4. A chemical reaction where energy is absorbed by the system from the surroundings
  5. A chemical reaction where energy is released from the system to the surroundings
  6. Energy in chemical reactions, it is the energy required to break chemical bonds to allow the reaction to proceed to products
  7. A positively charged subatomic particle located in the nucleus of an atom.
  8. Atoms combined in fix quantities. Atoms can be separated only by destroying substance.
  9. The outside of the atom. Where electron's are located.
  10. Any change that doesn’t change the identity. Observed with senses. Determined without changing matter.

22 Clues: The outside of the atom. Where electron's are located. • An element or compound produced by a chemical reaction. • A reaction in which two nuclei combine to form a nucleus. • An element or compound that enters into a chemical reaction. • A neutral particle located in the nucleus with a charge of zero. • ...

Vocab 2022-10-12

Vocab crossword puzzle
Across
  1. A substance that is present at the beginning of a chemical reaction, takes part in the reaction, and is changed into a new substance.
  2. number: The total number of protons and neutrons in an atom’s nucleus.
  3. A substance made up of two or more different types of atoms bonded together.
  4. The number written slightly below and to the right of a chemical symbol that shows how many atoms of an element are in a compound.
  5. The total number of protons in an atom’s nucleus.
  6. a vertical column in the periodic table of the elements that have similar properties.
  7. A substance that is not uniform throughout.
  8. A neutral particle located in an atom’s nucleus.
  9. An atom of group of atoms that has a positive or negative electric charge; forms by gaining or losing electrons.
  10. A negatively charged particle located outside of an atom’s nucleus about 2000 times smaller than either a proton or neutron.
  11. A group of atoms that are held together by covalent bonds so that they move together.
  12. A combination of two or more substances that do not combine chemically, but remain the same individual substances.
Down
  1. A change of one substance into another substance.
  2. A usually reversible change in the physical properties of a substance, as size and shape.
  3. A substance that increases the rate of a chemical reaction but is not consumed by the reaction.
  4. A scientific law stating that during a chemical reaction, matter is not created nor destroyed.
  5. A negatively charged particle located outside of an atom’s nucleus about 2000 times smaller than either a proton or neutron.
  6. A substance formed by a chemical reaction; made by the rearrangement of atoms and bonds in reactants.
  7. A solid substance that forms as a result of a chemical reaction between chemicals in two liquids
  8. A substance that is evenly spread throughout. Particles not distinguishable.
  9. a horizontal row in the periodic table of the elements that have varying properties.
  10. A positively charged particle located in an atom’s nucleus.
  11. The number before a chemical formula indicating how many molecules are involved in a chemical reaction.
  12. A substance that cannot be broken down into a simpler substance by ordinary chemical changes.

24 Clues: A substance that is not uniform throughout. • A neutral particle located in an atom’s nucleus. • A change of one substance into another substance. • The total number of protons in an atom’s nucleus. • A positively charged particle located in an atom’s nucleus. • number: The total number of protons and neutrons in an atom’s nucleus. • ...

Chapter 6&7 Vocab 2024-04-02

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

18 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 • ...

biochemistry 2020-09-11

biochemistry crossword puzzle
Across
  1. A reaction that builds new molecules from smaller molecules.
  2. Acid one of the 4 essential biomolecules. DNA and RNA are examples. Used to store genetic information.
  3. single unit, building block, subunit
  4. containing carbon
  5. Type of protein used in chemical reactions. Speed up reactions by lowering the activation energy. Shape specific.
  6. one of the 4 essential biomolecules. Most diverse in terms of function. Used for structure, signaling, regulation, enzymes, transport.
  7. one of the 4 essential biomolecules. Short term energy storage, structure in plants
  8. energy Amount of energy required to start a reaction
  9. To change shape
  10. Nucleic acid that stores genetic information
  11. molecule made of many smaller molecules
  12. Nucleic acid that transports genetic information
  13. Output of a chemical reaction. What leaves the enzyme after a reaction has occurred.
  14. complex sugar; many monosaccharides linked together. ex. cellulose, starch
Down
  1. single sugar, simple sugar. Ex. glucose
  2. Monomer of Nucleic Acids. 3 parts: Sugar, phosphate, nitrogen base.
  3. Bond Chemical bond between amino acids
  4. one of the 4 essential biomolecules. Long term energy storage and membranes. ex. phospholipids
  5. Acid Monomer of lipids.
  6. Acid Monomer of proteins. 20 different types
  7. substance that increases the rate (speed) of the reaction
  8. Input of a chemical reaction. Bonds to enzyme and undergoes change.
  9. many monomers linked together, ex. macromolecules
  10. Input of a chemical reaction. Synonym of substrate.

24 Clues: To change shape • containing carbon • Acid Monomer of lipids. • single unit, building block, subunit • Bond Chemical bond between amino acids • single sugar, simple sugar. Ex. glucose • molecule made of many smaller molecules • Acid Monomer of proteins. 20 different types • Nucleic acid that stores genetic information • Nucleic acid that transports genetic information • ...

Review Unit 2 2022-10-17

Review Unit 2 crossword puzzle
Across
  1. reactions is a chemical reaction that releases energy as heat.
  2. complex chemistry in the body
  3. reaction examples include ripping of paper or melting of ice?
  4. is the energy needed to start a chemical reaction
  5. large molecules to small molecules (release energy/ heat)
  6. A main source of energy for organisms in the form of sugar or starches.
  7. store long-term energy and form protective barriers
  8. are complex macromolecules that perform a variety of functions
Down
  1. reactions that change one substance into another
  2. are resulting materials at the end of a chemical reaction
  3. small molecules are built into large molecules (need energy/ heat)
  4. are starting materials in a chemical reaction
  5. reaction examples include frying an egg or rusting of metal?
  6. that transmit genetic information/store directions for making proteins
  7. reactions is a chemical reaction that absorbs energy.

15 Clues: complex chemistry in the body • are starting materials in a chemical reaction • reactions that change one substance into another • is the energy needed to start a chemical reaction • store long-term energy and form protective barriers • reactions is a chemical reaction that absorbs energy. • are resulting materials at the end of a chemical reaction • ...

Chemistry Crossword 2013-12-09

Chemistry Crossword crossword puzzle
Across
  1. when all substances in a compound are combined with oxygen, which then produces carbon dioxide and water.
  2. The compounds that are formed when a reaction goes to completion.
  3. two or more chemical species combine to form a more complex product.
  4. when an element or ion moves out of one compound and into another - that is, one element is replaced by another in a compound.
  5. cause a substance to be deposited in solid form from a solution.
  6. Chemical equation for a reaction which lists only those species participating in the reaction.
  7. the minor component in a solution, dissolved in the solvent.
  8. a solution in water.
  9. a chemical reaction between two compounds where the positive ion of one compound is exchanged with the positive ion of another compound.
  10. A spectator ion is an ion that exists as a reactant and a product in a chemical equation.
  11. able to dissolve other substances.
  12. Yield is the quantity of product obtained from a reaction.
  13. indicates the number of atoms of this element in the chemical compound.
  14. the number that normally appears at the beginning of a term in a chemical equation.
Down
  1. separation of a substance into two or more substances that may differ from each other and from the original substance.
  2. a substance formed when two or more chemical elements are chemically bonded together.
  3. the force that holds atoms together.
  4. Equation a symbolic representation of a chemical reaction. The reactant entities are normally given on the left side while the product entities are given on the right side. The equation represents soluble ionic compounds as separate ions.
  5. a substance that takes part in and undergoes change during a reaction.

19 Clues: a solution in water. • able to dissolve other substances. • the force that holds atoms together. • Yield is the quantity of product obtained from a reaction. • the minor component in a solution, dissolved in the solvent. • cause a substance to be deposited in solid form from a solution. • The compounds that are formed when a reaction goes to completion. • ...

Chemistry Crossword 2013-12-09

Chemistry Crossword crossword puzzle
Across
  1. indicates the number of atoms of this element in the chemical compound.
  2. a solution in water.
  3. the force that holds atoms together.
  4. when all substances in a compound are combined with oxygen, which then produces carbon dioxide and water.
  5. A spectator ion is an ion that exists as a reactant and a product in a chemical equation.
  6. two or more chemical species combine to form a more complex product.
  7. when an element or ion moves out of one compound and into another - that is, one element is replaced by another in a compound.
  8. Chemical equation for a reaction which lists only those species participating in the reaction.
  9. a substance that takes part in and undergoes change during a reaction.
  10. Equation a symbolic representation of a chemical reaction. The reactant entities are normally given on the left side while the product entities are given on the right side. The equation represents soluble ionic compounds as separate ions.
  11. The compounds that are formed when a reaction goes to completion.
  12. a substance formed when two or more chemical elements are chemically bonded together.
  13. Yield is the quantity of product obtained from a reaction.
  14. the minor component in a solution, dissolved in the solvent.
Down
  1. a chemical reaction between two compounds where the positive ion of one compound is exchanged with the positive ion of another compound.
  2. cause a substance to be deposited in solid form from a solution.
  3. separation of a substance into two or more substances that may differ from each other and from the original substance.
  4. able to dissolve other substances.
  5. the number that normally appears at the beginning of a term in a chemical equation.

19 Clues: a solution in water. • able to dissolve other substances. • the force that holds atoms together. • Yield is the quantity of product obtained from a reaction. • the minor component in a solution, dissolved in the solvent. • cause a substance to be deposited in solid form from a solution. • The compounds that are formed when a reaction goes to completion. • ...

Chemistry Crossword 2013-12-09

Chemistry Crossword crossword puzzle
Across
  1. a substance formed when two or more chemical elements are chemically bonded together.
  2. indicates the number of atoms of this element in the chemical compound.
  3. when all substances in a compound are combined with oxygen, which then produces carbon dioxide and water.
  4. cause a substance to be deposited in solid form from a solution.
  5. when an element or ion moves out of one compound and into another - that is, one element is replaced by another in a compound.
  6. Yield is the quantity of product obtained from a reaction.
  7. Chemical equation for a reaction which lists only those species participating in the reaction.
  8. two or more chemical species combine to form a more complex product.
  9. the minor component in a solution, dissolved in the solvent.
  10. The compounds that are formed when a reaction goes to completion.
  11. Equation a symbolic representation of a chemical reaction. The reactant entities are normally given on the left side while the product entities are given on the right side. The equation represents soluble ionic compounds as separate ions.
  12. able to dissolve other substances.
  13. a substance that takes part in and undergoes change during a reaction.
Down
  1. a solution in water.
  2. separation of a substance into two or more substances that may differ from each other and from the original substance.
  3. a chemical reaction between two compounds where the positive ion of one compound is exchanged with the positive ion of another compound.
  4. the force that holds atoms together.
  5. A spectator ion is an ion that exists as a reactant and a product in a chemical equation.
  6. the number that normally appears at the beginning of a term in a chemical equation.

19 Clues: a solution in water. • able to dissolve other substances. • the force that holds atoms together. • Yield is the quantity of product obtained from a reaction. • the minor component in a solution, dissolved in the solvent. • cause a substance to be deposited in solid form from a solution. • The compounds that are formed when a reaction goes to completion. • ...

YEAR 7 FINAL VOCABULARY 2025-12-04

YEAR 7 FINAL VOCABULARY crossword puzzle
Across
  1. Substances formed during a chemical reaction.
  2. Type of change where no new substance is formed.
  3. A solid that forms from mixing two liquids.
  4. Physical process where sugar mixes into water.
  5. Two or more atoms chemically joined.
  6. The quantity that rises when water absorbs energy.
  7. A physical change of state from solid to liquid.
  8. The reverse process of photosynthesis.
  9. Reaction that produces heat and light.
  10. Liquid turning into gas; requires energy.
  11. Evidence of gas being released in a reaction.
Down
  1. A chemical change where iron reacts with oxygen.
  2. Substances found on the left side of a chemical equation.
  3. Substance represented by the formula C₆H₁₂O₆.
  4. Gas changing into a liquid; an exothermic process.
  5. A reaction that takes in energy from the surroundings.
  6. Gas that reacts with magnesium to produce a bright white light.
  7. Type of change that forms a new substance.
  8. A reaction that releases energy to the surroundings.
  9. A substance made from two or more elements bonded.

20 Clues: Two or more atoms chemically joined. • The reverse process of photosynthesis. • Reaction that produces heat and light. • Liquid turning into gas; requires energy. • Type of change that forms a new substance. • A solid that forms from mixing two liquids. • Substances formed during a chemical reaction. • Substance represented by the formula C₆H₁₂O₆. • ...

Chemistry Crossword 2013-12-09

Chemistry Crossword crossword puzzle
Across
  1. The compounds that are formed when a reaction goes to completion.
  2. Yield is the quantity of product obtained from a reaction.
  3. indicates the number of atoms of this element in the chemical compound.
  4. the force that holds atoms together.
  5. A spectator ion is an ion that exists as a reactant and a product in a chemical equation.
  6. two or more chemical species combine to form a more complex product.
  7. separation of a substance into two or more substances that may differ from each other and from the original substance.
  8. the minor component in a solution, dissolved in the solvent.
  9. a substance that takes part in and undergoes change during a reaction.
  10. able to dissolve other substances.
Down
  1. cause a substance to be deposited in solid form from a solution.
  2. Equation a symbolic representation of a chemical reaction. The reactant entities are normally given on the left side while the product entities are given on the right side. The equation represents soluble ionic compounds as separate ions.
  3. when all substances in a compound are combined with oxygen, which then produces carbon dioxide and water.
  4. a chemical reaction between two compounds where the positive ion of one compound is exchanged with the positive ion of another compound.
  5. Chemical equation for a reaction which lists only those species participating in the reaction.
  6. a solution in water.
  7. when an element or ion moves out of one compound and into another - that is, one element is replaced by another in a compound.
  8. the number that normally appears at the beginning of a term in a chemical equation.
  9. a substance formed when two or more chemical elements are chemically bonded together.

19 Clues: a solution in water. • able to dissolve other substances. • the force that holds atoms together. • Yield is the quantity of product obtained from a reaction. • the minor component in a solution, dissolved in the solvent. • cause a substance to be deposited in solid form from a solution. • The compounds that are formed when a reaction goes to completion. • ...

Chemistry 2018-11-12

Chemistry crossword puzzle
Across
  1. A stable subatomic particle occurring in all atomic nuclei, with a positive electric charge equal in magnitude to that of an electron, but of opposite sign
  2. Chemical reaction that releases heat energy
  3. Chemical reaction that occurs when oxygen reacts with a substance to form a new substance and give off energy
  4. Number of protons in the nucleus of one atom of an element
  5. Workplace Hazardous Material Information System
  6. Pure substance that cannot be broken down into other substances; substance only made up of one type of atom
  7. Basic unit of a chemical element
  8. Chemical reaction that absorbs heat energy
  9. More than two elements combine
  10. Below
  11. New materials produced by the reaction
Down
  1. Slow chemical change that occurs when oxygen in air reacts with a metal
  2. French chemist who created a nomenclature for naming compounds
  3. Anything that has mass and occupies space
  4. Pure substance formed when non-metals combine
  5. A subatomic particle of about the same mass as a proton but without an electric charge, present in all atomic nuclei except those of ordinary hydrogen
  6. Chemical reaction that takes place in the cells in your body
  7. Mass of one atom of an element calculated from the total number of protons, neutrons, and electrons of that atom; measured in amu
  8. Have metallic and non-metallic properties
  9. Materials at the start of a reaction
  10. A book describing the achievements of alchemists.
  11. A table in which the elements are organized by their physical and chemical properties
  12. Substances that help a reaction proceed faster
  13. The central and most important part of an object, movement, or group, forming the basis for its activity and growth
  14. Pure substance formed when at least one metal and one non-metal combine

25 Clues: Below • More than two elements combine • Basic unit of a chemical element • Materials at the start of a reaction • New materials produced by the reaction • Anything that has mass and occupies space • Have metallic and non-metallic properties • Chemical reaction that absorbs heat energy • Chemical reaction that releases heat energy • ...

10 2024-11-28

10 crossword puzzle
Across
  1. if the
  2. speed
  3. the energy
  4. burning
  5. carbohydrates
  6. Reaction in which one element replaces another element within a compound
  7. Gain of hydrogen by a substance during a chemical reaction
Down
  1. __ mirror
  2. Reaction in which heat is given out along with the products
  3. screen
  4. term
  5. bb
  6. the opening
  7. a point
  8. rear view
  9. when we breathe
  10. When
  11. Insoluble
  12. the
  13. lactic acid

20 Clues: bb • the • term • When • speed • if the • screen • a point • burning • __ mirror • rear view • Insoluble • the energy • the opening • lactic acid • carbohydrates • when we breathe • Gain of hydrogen by a substance during a chemical reaction • Reaction in which heat is given out along with the products • Reaction in which one element replaces another element within a compound

Types Of Reactions 2025-04-27

Types Of Reactions crossword puzzle
Across
  1. A reaction which gains and loses oxygen
  2. An insoluble substance formed during a double displacement reaction
  3. Something which speeds up the chemical reaction
  4. when one reactant decomposes to form 2 or more products
  5. Aqueous form of copper sulphate is known as
  6. Sodium Chloride, Silver Chloride, and Methyl Chloride are examples of
  7. An unbalanced chemical reaction with correct formulae
  8. Decompostion reaction which involves light
  9. Decomposition reaction which involves light
Down
  1. usually forms a precipitate
  2. When a more reactive metal displaces and less reactive metal
  3. when 2 or more reactants combine to form one product
  4. When a metal is attacked by moisture, acids etc it corrodes.
  5. Ca(OH)2 is known as
  6. Why do we balance chemical equations
  7. (aq)represents
  8. When oxygen reacts on fats and oils
  9. Decompostion reaction which involves electricity

18 Clues: (aq)represents • Ca(OH)2 is known as • usually forms a precipitate • When oxygen reacts on fats and oils • Why do we balance chemical equations • A reaction which gains and loses oxygen • Decompostion reaction which involves light • Aqueous form of copper sulphate is known as • Decomposition reaction which involves light • Something which speeds up the chemical reaction • ...

Rate of Reactions - Concentration 2024-08-19

Rate of Reactions - Concentration crossword puzzle
Across
  1. The process where substances are transformed into different substances.
  2. Describes large-scale applications where concentration control is vital, such as in chemical manufacturing.
  3. A principle that explains how reactions occur, involving collision and energy.
  4. A type of reaction that occurs faster when oxygen concentration is increased, such as in a fire.
  5. The relationship between concentration and rate in a first-order reaction.
  6. The process in plants that increases with higher carbon dioxide concentration.
  7. The speed at which a chemical reaction occurs.
  8. The minimum energy required for a reaction to occur.
Down
  1. A group of atoms bonded together, representing the smallest unit of a chemical compound.
  2. A factor that affects reaction rates in gases; increasing it increases concentration.
  3. Required interaction for a reaction to occur between molecules.
  4. The amount of a substance in a given volume.
  5. A substance that speeds up a reaction without being consumed.
  6. An everyday process where increasing the concentration of acid (like vinegar) can speed up the tenderising of meat.
  7. A factor that affects reaction rate by influencing the energy of collisions.
  8. The area of a solid reactant exposed to a reaction; increasing this area usually increases reaction rate.
  9. High concentration of harmful substances in the air can lead to faster degradation of buildings and health.
  10. A material involved in a chemical reaction.

18 Clues: A material involved in a chemical reaction. • The amount of a substance in a given volume. • The speed at which a chemical reaction occurs. • The minimum energy required for a reaction to occur. • A substance that speeds up a reaction without being consumed. • Required interaction for a reaction to occur between molecules. • ...

Chemical Bonding Vocabulary 2024-11-14

Chemical Bonding Vocabulary crossword puzzle
Across
  1. Substances that increase the rate of a chemical reaction without being consumed in the process
  2. A positively charged ions that are formed when an atoms when one an atom loses one or more electrons
  3. A type of chemical bond that involves the sharing of electrons between atoms
  4. The system of sets or rules used to name or classify things
  5. A type of chemical bond that forms between two atoms when one atom transfers electrons to another atom
  6. The process by which organic matter break down into similar substances
  7. A type of chemical reaction when two or more substances combine to form a new,more complex substance
Down
  1. State that mass cannot be created or destroyed in a chemical reactiom
  2. A concept used in chemistry to describe the charge that an atom would have if all it's bonds were 100% ionic
  3. The speed at which a chemical reaction takes place
  4. A chemical reaction that absorbs heat from its surroundings
  5. A process in which substances called reactants, undergo a chemical change to form new substances called products
  6. A substance that undergoes a chemical reaction
  7. A force of attraction between atoms that holds them together in a molecule
  8. A negatively charged ion
  9. A substance formed as a result of a chemical reaction

16 Clues: A negatively charged ion • A substance that undergoes a chemical reaction • The speed at which a chemical reaction takes place • A substance formed as a result of a chemical reaction • A chemical reaction that absorbs heat from its surroundings • The system of sets or rules used to name or classify things • ...

Chapter 9,10 & 11 2015-03-06

Chapter 9,10 & 11 crossword puzzle
Across
  1. an ionic compound that produces hydroxide ions when dissolved in water
  2. compound that contains one or more hydrogen atoms and produces hydrogen ions (H+) when dissolved in water
  3. formula basic ratio that gives the lowest whole-number ratio of the atoms of the elements in a compound
  4. of definite proportions samples of any chemical compound, the masses of the elements are always in the same proportions
  5. particle the smallest unit into which a substance can be broken down without a change in composition, usually atoms, molecules, or ions
  6. the amount of a substance that contains 6.02 × 1023 representative particles of that substance
  7. equation a representation of a chemical reaction; the formulas of the reactants re connected by an arrow with the formulas of the products
  8. mass mass of a mole of an element
  9. of multiple proportions the different masses of one element that combine with the same mass of the other element are in the ratio of small whole numbers
  10. reaction a chemical change in which an element or a compound reacts with oxygen, often producing energy in the form of heat and light
  11. reaction a chemical change in which a single compound breaks down into two or more simpler products
  12. replacement reaction a chemical change in which one element replaces a second element in a compound
  13. equation a chemical equation that does not indicate the relative amounts of the reactants and products
  14. reaction a chemical change in which two or more substances react to form a single new substance; also called a synthesis reaction
  15. composition the percent by mass of each element in a compound
  16. series a list of elements in order of decreasing activity; the activity series of halogens is Fl, Cl, Br, I
Down
  1. replacement reaction a chemical change involving an exchange of positive ions between two compounds
  2. a chemical equation in which mass is conserved; each side of the equation has the same number of atoms of each element
  3. ions a tightly bound group of atoms that behaves as a unit and has a positive or negative charge
  4. ionic compounds an equation for a reaction in solution that shows only those particles that are directly involved in the chemical change
  5. ion an equation for a reaction in solution that shows only those particles that are directly involved in the chemical change
  6. volume the volume occupied by 1 mole of a gas at standard temperature and pressure
  7. a substance that speeds up the reaction but is not used up in the reaction
  8. a small whole number that appears in front of a formula in a balanced chemical equation
  9. ions consist of a single atom with a positive or negative charge resulting from the loss or gain of one or more valence electrons, respectively
  10. the conditions under which the volume of a gas is usually measured; standard temperature is 0°C, and standard pressure is 101.3 kPa, or 1 atmosphere (atm)
  11. ionic equation an equation that shows dissolved ionic compounds as dissociated free ions
  12. number The number of representative particles in a mole, 6.02 × 1023
  13. compound composed of two elements and can be either ionic or molecular

29 Clues: mass mass of a mole of an element • composition the percent by mass of each element in a compound • number The number of representative particles in a mole, 6.02 × 1023 • an ionic compound that produces hydroxide ions when dissolved in water • compound composed of two elements and can be either ionic or molecular • ...

Chemistry 2023-11-14

Chemistry crossword puzzle
Across
  1. _____model is an early atomic model depicting electrons orbiting the nucleus
  2. resulting substance(s) formed in a chemical reaction
  3. ________ chemical reaction absorbs heat from its surroundings during a chemical reaction
  4. neutrally charged subatomic particle found in the nucleus
  5. numeric factor indicating the quantity of a substance in a chemical reaction
  6. positively charged particle found in the nucleus
  7. _________Chemical reaction releases heat to its surroundings during a reaction
  8. basic unit of matter, consisting of protons neutrons and electrons
Down
  1. small number indicating the number of atoms in a molecule
  2. rapid reaction with oxygen which produces water and Carbon dioxide
  3. combination of substances to form a more complex product
  4. negatively charged particle found in the electron cloud
  5. substance entering a chemical reaction (Left side)
  6. breakdown of a compound into simpler substances

14 Clues: breakdown of a compound into simpler substances • positively charged particle found in the nucleus • substance entering a chemical reaction (Left side) • resulting substance(s) formed in a chemical reaction • negatively charged particle found in the electron cloud • combination of substances to form a more complex product • ...

Chemical Reaction Crossword Puzzle 2013-12-18

Chemical Reaction Crossword Puzzle crossword puzzle
Across
  1. number placed in front of a chemical formula
  2. when two or more elements combine to make more complex substance
  3. reaction that breaks down compounds
  4. reaction that is complete
  5. reaction which releases energy
  6. a systen in which no matter can enter
  7. decrease the rate of a reaction
  8. rapid reaction
  9. reaction which energy is absored
  10. mimimum amount of energy needed is a chemical reaction
Down
  1. substances in the beginning
  2. cells in your body
  3. the study of matter and how matter changes
  4. amount of a substance ina given volume
  5. material that releases energy when it burns
  6. solid that forms from solution
  7. when one element replaces another in a compound
  8. a system in which matter can enter
  9. Anything that has mass
  10. increses the rate of a reaction

20 Clues: rapid reaction • cells in your body • Anything that has mass • reaction that is complete • substances in the beginning • solid that forms from solution • reaction which releases energy • decrease the rate of a reaction • increses the rate of a reaction • reaction which energy is absored • a system in which matter can enter • reaction that breaks down compounds • ...

Exam Review 2024-05-24

Exam Review crossword puzzle
Across
  1. Percent
  2. Nickel
  3. Chemical
  4. Aluminum
  5. Goggles
  6. Keq
  7. PercentError
  8. Scale
  9. Tin
Down
  1. Equilibrium
  2. Lead
  3. BunsenBurner
  4. BeakerTongs
  5. Data
  6. Metal
  7. Reaction

16 Clues: Keq • Tin • Lead • Data • Metal • Scale • Nickel • Percent • Goggles • Chemical • Aluminum • Reaction • Equilibrium • BeakerTongs • BunsenBurner • PercentError

Separates only 2024-07-10

Separates only crossword puzzle
Across
  1. What can Avogadro's law be used to calculate.
  2. The symbol for moles.
  3. The number for the molar volume of gas.
  4. Calculated by: (actual yield of product/theoretical yield of product)x100
  5. The name given to the volume occupied by one mole of any gas at room temperature and pressure.
  6. The name of the product wanted in a chemical reaction.
  7. Products that are not desired from a chemical reaction.
Down
  1. Calculated by: (total Mr of desired product/total Mr of all reactants)x100
  2. The maximum possible yield of a product from a chemical reaction.
  3. Which law states that when temperature and pressure stay the same equal volumes of different gases contain an equal number of molecules.
  4. The type of reaction that occurs if yield is less than 100%.
  5. The amount of product made in a chemical reaction.
  6. Some reactants undergo these and so do not create the desired product.
  7. Atom economy is 100% when ____ reactants end up in the desired product.
  8. The number of products made in a chemical reaction where atom economy is 100%.
  9. What is not gained or lost in a chemical reaction.

16 Clues: The symbol for moles. • The number for the molar volume of gas. • What can Avogadro's law be used to calculate. • The amount of product made in a chemical reaction. • What is not gained or lost in a chemical reaction. • The name of the product wanted in a chemical reaction. • Products that are not desired from a chemical reaction. • ...

Enzymes 2023-10-19

Enzymes crossword puzzle
Across
  1. The loss of an enzyme's shape and function due to extreme changes in temperature or pH.
  2. A model that describes how the active site of an enzyme adjusts its shape to accommodate the substrate.
  3. Organic molecules that act as cofactors for certain enzymes, often derived from vitamins.
  4. Chemical transformation facilitated by enzymes, reducing the activation energy required for the reaction to occur.
  5. A biological catalyst that speeds up chemical reactions in living organisms without being consumed in the process.
  6. The process by which an enzyme's activity is reduced or blocked by another molecule.
  7. The specific molecule upon which an enzyme acts during a chemical reaction.
  8. Reactions only progress in one direction, forming products from reactants.
  9. When an inhibitor binds to a site on the enzyme other than the active site, altering the enzyme's conformation.
  10. A substance that increases the rate of a chemical reaction without being consumed in the process.
  11. Measures the speed of enzyme-catalyzed reactions.
  12. When a molecule similar in structure to the substrate competes with the substrate for the enzyme's active site.
Down
  1. A model that illustrates the specificity of enzyme-substrate interactions, where the active site of the enzyme is complementary in shape to the substrate.
  2. Reaction can proceed in both forward and reverse directions.
  3. When a molecule competes with the substrate for binding to the enzyme's active site.
  4. Chemical reactions within living organisms regulated by enzymes.
  5. An enzyme functions at its maximum efficiency, typically under specific conditions such as pH and temperature.
  6. Influences the rate of enzymatic reactions
  7. The region of the enzyme where the substrate binds and the catalytic reaction takes place.
  8. The energy required to start a chemical reaction, which enzymes lower.
  9. The molecules formed as a result of an enzyme-catalyzed reaction.
  10. Inorganic molecules or ions that assist enzymes in catalyzing reactions.

22 Clues: Influences the rate of enzymatic reactions • Measures the speed of enzyme-catalyzed reactions. • Reaction can proceed in both forward and reverse directions. • Chemical reactions within living organisms regulated by enzymes. • The molecules formed as a result of an enzyme-catalyzed reaction. • The energy required to start a chemical reaction, which enzymes lower. • ...

chemical interactions 2022-03-21

chemical interactions crossword puzzle
Across
  1. during a chemical reaction, matter is not created or destroyed.
  2. a characteristic of a substance that can be observed without changing the substance into another substance.
  3. use chemical formulas and other symbols instead of words to summarize reaction.
  4. a material that increases the rate of a reaction by lowering the activation energy.
  5. a reaction that releases energy in the form of heat.
  6. the result of fire
  7. a characteristic of a substance that describes its ability to change into other substances.
  8. the cells in your body contain biological catalysts.
  9. a material that releases energy when it burns
  10. matter is not allowed to enter or leave.
  11. can be described in the terms of two kinds of properties, physical and chemical.
  12. a material that used to work by preventing reactants from coming together.
  13. the minimum amount of energy needed to start a chemical reaction.
Down
  1. a number placed in front of a chemical formula in am equation
  2. the study of matter and how matter changes
  3. a solid that forms from solution during a chemical reaction
  4. when the reaction is complete, you have new substances.
  5. A change in matter that produces one or more new substances
  6. the amount of a substance in a given volume
  7. a reaction in which energy is absorbed
  8. any change that alters the form or appearance of a substance but that does not make the substance into another substance.
  9. breaks down compounds into simpler products.
  10. matter can enter from or escape to surroundings.
  11. when two elements in different compounds trade places.
  12. the substances you have at the beginning.
  13. when two or more elements or compounds combine to make more complex substances.

26 Clues: the result of fire • a reaction in which energy is absorbed • matter is not allowed to enter or leave. • the substances you have at the beginning. • the study of matter and how matter changes • the amount of a substance in a given volume • breaks down compounds into simpler products. • a material that releases energy when it burns • ...

chemical interactions 2022-03-21

chemical interactions crossword puzzle
Across
  1. the substances you have at the beginning.
  2. a reaction that releases energy in the form of heat.
  3. use chemical formulas and other symbols instead of words to summarize reaction.
  4. a material that used to work by preventing reactants from coming together.
  5. the study of matter and how matter changes
  6. the amount of a substance in a given volume
  7. when two or more elements or compounds combine to make more complex substances.
  8. a solid that forms from solution during a chemical reaction
  9. a characteristic of a substance that can be observed without changing the substance into another substance.
  10. the cells in your body contain biological catalysts.
  11. matter can enter from or escape to surroundings.
  12. can be described in the terms of two kinds of properties, physical and chemical.
  13. when the reaction is complete, you have new substances.
Down
  1. the minimum amount of energy needed to start a chemical reaction.
  2. during a chemical reaction, matter is not created or destroyed.
  3. any change that alters the form or appearance of a substance but that does not make the substance into another substance.
  4. a reaction in which energy is absorbed
  5. when two elements in different compounds trade places.
  6. the result of fire
  7. matter is not allowed to enter or leave.
  8. a characteristic of a substance that describes its ability to change into other substances.
  9. a material that increases the rate of a reaction by lowering the activation energy.
  10. a number placed in front of a chemical formula in am equation
  11. breaks down compounds into simpler products.
  12. A change in matter that produces one or more new substances
  13. a material that releases energy when it burns

26 Clues: the result of fire • a reaction in which energy is absorbed • matter is not allowed to enter or leave. • the substances you have at the beginning. • the study of matter and how matter changes • the amount of a substance in a given volume • breaks down compounds into simpler products. • a material that releases energy when it burns • ...

YEAR 7 FINAL VOCABULARY 2025-12-04

YEAR 7 FINAL VOCABULARY crossword puzzle
Across
  1. Substances formed during a chemical reaction.
  2. Type of change where no new substance is formed.
  3. A solid that forms from mixing two liquids.
  4. Physical process where sugar mixes into water.
  5. Two or more atoms chemically joined.
  6. The quantity that rises when water absorbs energy.
  7. A physical change of state from solid to liquid.
  8. The reverse process of photosynthesis.
  9. Reaction that produces heat and light.
  10. Liquid turning into gas; requires energy.
  11. Evidence of gas being released in a reaction.
Down
  1. A chemical change where iron reacts with oxygen.
  2. Substances found on the left side of a chemical equation.
  3. Substance represented by the formula C₆H₁₂O₆.
  4. Gas changing into a liquid; an exothermic process.
  5. A reaction that takes in energy from the surroundings.
  6. Gas that reacts with magnesium to produce a bright white light.
  7. Type of change that forms a new substance.
  8. A reaction that releases energy to the surroundings.
  9. A substance made from two or more elements bonded.

20 Clues: Two or more atoms chemically joined. • The reverse process of photosynthesis. • Reaction that produces heat and light. • Liquid turning into gas; requires energy. • Type of change that forms a new substance. • A solid that forms from mixing two liquids. • Substances formed during a chemical reaction. • Substance represented by the formula C₆H₁₂O₆. • ...

Chemical Reaction: Precipitate Form 2025-11-12

Chemical Reaction: Precipitate Form crossword puzzle
Across
  1. the result of the experiment is consistent and repeatable
  2. the sound produced in testing hydrogen
  3. the process when you mix the acids and alkalis solution together
  4. a solution where water is the solvent
  5. substance to test the presence of carbon dioxide
  6. the small number written below in a chemical formula showing how many atoms of an element are in a molecule
  7. variable that is changed
  8. the substances you start with in a chemical reaction
  9. the big number in front of a chemical formula showing how many molecules of that substance are present
  10. a mixture formed when a solute dissolves in a solvent
Down
  1. ability of substance that is not able to dissolve in a liquid
  2. the colour changed when the carbon dioxide is present
  3. the observation in testing the oxygen
  4. the process of forming a precipitate.
  5. ability of substance that is able to dissolve in a liquid (usually water)
  6. variable that is measured
  7. a solid that forms when two soluble reactants react and produce an insoluble substance
  8. the substance that dissolves
  9. a special equipment for neutralisation
  10. the new substances formed after the reaction
  11. the liquid that does the dissolving
  12. when a solid mixes evenly with a liquid so that it disappears and forms a solution
  13. breaking down or rotting of once-living materials, like plants or animals
  14. the experiment tests what it is supposed to test(correct variables)
  15. variable that is controlled

25 Clues: variable that is changed • variable that is measured • variable that is controlled • the substance that dissolves • the liquid that does the dissolving • the observation in testing the oxygen • the process of forming a precipitate. • a solution where water is the solvent • the sound produced in testing hydrogen • a special equipment for neutralisation • ...

YEAR 8 CHEMISTRY FINAL VOCABULARY 2025-12-04

YEAR 8 CHEMISTRY FINAL VOCABULARY crossword puzzle
Across
  1. Substances formed during a chemical reaction.
  2. Type of change where no new substance is formed.
  3. A solid that forms from mixing two liquids.
  4. Physical process where sugar mixes into water.
  5. Two or more atoms chemically joined.
  6. The quantity that rises when water absorbs energy.
  7. A physical change of state from solid to liquid.
  8. The reverse process of photosynthesis.
  9. Reaction that produces heat and light.
  10. Liquid turning into gas; requires energy.
  11. Evidence of gas being released in a reaction.
Down
  1. A chemical change where iron reacts with oxygen.
  2. Substances found on the left side of a chemical equation.
  3. Substance represented by the formula C₆H₁₂O₆.
  4. Gas changing into a liquid; an exothermic process.
  5. A reaction that takes in energy from the surroundings.
  6. Gas that reacts with magnesium to produce a bright white light.
  7. Type of change that forms a new substance.
  8. A reaction that releases energy to the surroundings.
  9. A substance made from two or more elements bonded.

20 Clues: Two or more atoms chemically joined. • The reverse process of photosynthesis. • Reaction that produces heat and light. • Liquid turning into gas; requires energy. • Type of change that forms a new substance. • A solid that forms from mixing two liquids. • Substances formed during a chemical reaction. • Substance represented by the formula C₆H₁₂O₆. • ...

chemicals: 2016-10-23

chemicals: crossword puzzle
Across
  1. a green chemical found in the chloroplasts of green plants, needed to carry out photosynthesis
  2. a reaction of acid with a base, forming salt and water
  3. single celled organisms that live in water
  4. a process in which chemicals move
  5. chemicals that take part in a chemical reaction
  6. a green coating of copper hydroxide that is produced when copper reacts with moisture, carbon dioxide and oxygen in the atmosphere
  7. hydrated iron (III) oxide
  8. a biological catalyst that speeds up reactions
Down
  1. endothermic reaction that takes place in green plants. uses energy from sunlight to combine water and carbon dioxide and produces glucose and oxygen gas.
  2. a simple sugar formed by photosynthesis
  3. highly combustible chemicals
  4. a rapid reaction with oxygen that releases energy in the form of heat and/ or light
  5. a chemical reaction that absorbs energy
  6. chemicals produced in a chemical reaction
  7. a term commonly used for sodium chloride
  8. a chemical reaction that releases energy
  9. a way of protecting aluminium from corrosion, by deliberately creating a layer of aluminium oxide over it

17 Clues: hydrated iron (III) oxide • highly combustible chemicals • a process in which chemicals move • a simple sugar formed by photosynthesis • a chemical reaction that absorbs energy • a term commonly used for sodium chloride • a chemical reaction that releases energy • chemicals produced in a chemical reaction • single celled organisms that live in water • ...

Chemical Reactions 2015-12-06

Chemical Reactions crossword puzzle
Across
  1. Reaction that involves a substance rapidly combining with oxygen, usually accompanied by a flame; burning
  2. Chemical compound with a pH > 7 that tastes bitter and is soapy to touch
  3. Shorthand way of describing the ratio of elements in a compound or molecule
  4. Solution formed by soluble bases
  5. Reaction that involves the breakdown of a compound into simpler substances; energy in the form of heat or electricity is required to break the bonds in the reactants
  6. Shorthand way of showing what happens to the reactants and products in a chemical reaction
  7. Insoluble compound formed in a precipitation reaction
  8. When solid products ‘fall out’ of solution of ionic substances
  9. When an acid and a base react to neutralise each other and form a salt and water
  10. Chemical substance formed in a reaction between an acid and a base, usually a metal and non-metal combination
Down
  1. Substance that changes colour in the presence of an acid or base
  2. Shorthand way of describing a chemical reaction in words; reactants are on one side of the equation and products on the other
  3. Compound of carbon and hydrogen
  4. Scientific law that states the total mass of the reactants in a chemical reaction always equals the total mass of the products
  5. Base that dissolves in water
  6. Chemical compound with a pH < 7 that tastes sour and contains at least one hydrogen atom
  7. Swapping of ions between two salts in solution
  8. Substance that is neither an acid nor a base; pH = 7
  9. Reaction that involves the oxidation of a substance, usually a metal
  10. Scale that indicates the relative acidity or alkalinity of a solution; ranges from 0 to 14

20 Clues: Base that dissolves in water • Compound of carbon and hydrogen • Solution formed by soluble bases • Swapping of ions between two salts in solution • Substance that is neither an acid nor a base; pH = 7 • Insoluble compound formed in a precipitation reaction • When solid products ‘fall out’ of solution of ionic substances • ...

Types of Chemical Reactions by Levin 2024-04-30

Types of Chemical Reactions by Levin crossword puzzle
Across
  1. A type of reaction involving both oxidation and reduction processes.
  2. Chemical decomposition produced by passing an electric current through a solution.
  3. The breakdown of a compound into simpler substances.
  4. A substance composed of two or more elements chemically combined.
  5. A reaction that absorbs heat energy from its surroundings.
  6. A reaction that releases heat energy to its surroundings.
  7. Substances initially present in a chemical reaction.
  8. The loss of electrons or increase in oxidation state during a reaction.
  9. The gain of electrons or decrease in oxidation state during a reaction.
  10. Relating to heat or energy transfer in a system.
Down
  1. Substances formed as a result of a chemical reaction.
  2. A reaction where one element replaces another in a compound.
  3. When two or more substances unite to form a single product.
  4. A solid formed in a solution during a chemical reaction.
  5. A compound produced by the reaction of calcium oxide with water.

15 Clues: Relating to heat or energy transfer in a system. • The breakdown of a compound into simpler substances. • Substances initially present in a chemical reaction. • Substances formed as a result of a chemical reaction. • A solid formed in a solution during a chemical reaction. • A reaction that releases heat energy to its surroundings. • ...

Chemical Reaction - RMS 2024-10-17

Chemical Reaction - RMS crossword puzzle
Across
  1. Something that is made of all the same atoms or group of atoms.
  2. To change the order or position of something.
  3. An ending substance that is part of a chemical reaction.
  4. Mixing the substances to make elephant's toothpaste was an example of a ______ change.
  5. A process in which atoms rearrange to form new substances (two words)
  6. The name of the town in Amplify with the reddish-brown water
  7. An object,diagram, or computer program that helps us understand something by making it simpler or easier to see.
Down
  1. A starting substance that is part of a chemical reaction.
  2. The class demonstration with vinegar and baking soda was an example of a chemical change because a _____ was produced.
  3. Another name for iron oxide
  4. Something that can be observed about a substance such as its color, smell, or boiling point.
  5. Two or more atoms bonded (connected) together.
  6. The relative size of things
  7. The tiny piece that all matter, all the stuff in the world, is made of.

14 Clues: Another name for iron oxide • The relative size of things • To change the order or position of something. • Two or more atoms bonded (connected) together. • An ending substance that is part of a chemical reaction. • A starting substance that is part of a chemical reaction. • The name of the town in Amplify with the reddish-brown water • ...

Lesson 4 2025-10-27

Lesson 4 crossword puzzle
Across
  1. term that means potential for hydrogen
  2. polymer that is hard to break and can be recycled
  3. a base that neutralizes the acid upsetting your stomach
  4. when heat energy is absorbed in a chemical reaction
  5. substances you start with in a chemical reaction
  6. reaction when two or more substances interact to form new molecules
Down
  1. substance that speeds up a chemical reaction
  2. reaction that doesn't change the molecules, but can change appearance or state
  3. solids with a regular, repeating arrangement of atoms
  4. molecules arranged in long chains of repeating small molecules
  5. valuable crystals used to make jewelry
  6. substance that donates hydrogen ions, tastes sour and conducts electricity
  7. when heat energy is released in a chemical reaction
  8. chemical opposite of an acid

14 Clues: chemical opposite of an acid • term that means potential for hydrogen • valuable crystals used to make jewelry • substance that speeds up a chemical reaction • substances you start with in a chemical reaction • polymer that is hard to break and can be recycled • when heat energy is absorbed in a chemical reaction • when heat energy is released in a chemical reaction • ...

Science Key Words 2022-12-06

Science Key Words crossword puzzle
Across
  1. Information without numbers or measures
  2. The organelle where photosynthesis occurs
  3. chemical reaction which frees energy
  4. The study of plants
  5. the results of a chemical reaction
  6. The organelle where respiration occurs
  7. A chemical reaction which makes glucose
  8. A simple sugar which living things use for energy
  9. A living thing which can make its own food
  10. The study of animals
Down
  1. A protist which can photosynthesize
  2. Information with numbers or measures
  3. the ingredients of a chemical reaction
  4. The comparison of Volume or Area to Mass
  5. A living thing which must eat others for energy
  6. The three elements which all life is made of
  7. Complex sugar which is comprised of many glucoses
  8. The study of the ecosystems
  9. The study of life

19 Clues: The study of life • The study of plants • The study of animals • The study of the ecosystems • the results of a chemical reaction • A protist which can photosynthesize • Information with numbers or measures • chemical reaction which frees energy • the ingredients of a chemical reaction • The organelle where respiration occurs • Information without numbers or measures • ...

Brandon De la Cruz 2020-01-17

Brandon De la Cruz crossword puzzle
Across
  1. Complex the structure that results in the maximum energy point along the reaction path
  2. a substance obtained from another substance through chemical change
  3. a substance that speeds up a chemical reaction, but is not consumed by the reaction; hence a catalyst can be recovered chemically unchanged at the end of the reaction it has been used to speed up
  4. thermodynamic function that describes the randomness and disorder of molecules based on the number of different arrangements available to them in a given system or reaction
  5. Chatelier's Principle if the equilibrium of a system is disturbed by a change in one or more of the determining factors (as temperature, pressure, or concentration) the system tends to adjust itself to a new equilibrium by counteracting as far as possible the effect of the change
  6. is the ratio of solute in a solution to either solvent or total solution
  7. a chemical property referring to the ability for a given substance, the solute, to dissolve in a solvent. It is measured in terms of the maximum amount of solute dissolved in a solvent at equilibrium
  8. he loss of electrons during a reaction by a molecule, atom or ion
  9. a solution that can resist pH change upon the addition of an acidic or basic components
  10. when two or more chemicals combine and form a more complex product
  11. a force exerted by the substance per unit area on another substance
Down
  1. any substance that undergoes a chemical change in a given reaction
  2. Energy the minimum quantity of energy which the reacting species must possess in order to undergo a specified reaction
  3. a chemical reaction that occurs between a fuel and an oxidizing agent that produces energy, usually in the form of heat and light It is also known as burning
  4. is the property of matter which reflects the quantity of energy of motion of the component particles
  5. Chemical Reaction Reversible reactions will reach an equilibrium point where the concentrations of the reactants and products will no longer change
  6. It is often expressed in terms of either the concentration (amount per unit volume) of a product that is formed in a unit of time or the concentration of a reactant that is consumed in a unit of time
  7. Electron outer shell electron that is associated with an atom, and that can participate in the formation of a chemical bond if the outer shell is not closed; in a single covalent bond, both atoms in the bond contribute one valence electron in order to form a shared pair
  8. a type of chemical reaction in which a single compound breaks down into two or more elements or new compounds
  9. It is the sum of the internal energy added to the product of the pressure and volume of the system
  10. Replacement Reaction a type of chemical reaction where an element reacts with a compound and takes the place of another element in that compound
  11. a substance that decreases the rate of, or prevents, a chemical reaction
  12. Area how much exposed area a solid object has, expressed in square units

23 Clues: he loss of electrons during a reaction by a molecule, atom or ion • any substance that undergoes a chemical change in a given reaction • when two or more chemicals combine and form a more complex product • a substance obtained from another substance through chemical change • a force exerted by the substance per unit area on another substance • ...

Changes In Matter Vocab -Kyle Saffer 2024-05-15

Changes In Matter Vocab -Kyle Saffer crossword puzzle
Across
  1. the form of energy transferred between two things
  2. a characteristic of a substance that can be observed in a chemical reaction
  3. matter sticking together
  4. the part that goes through change in a reaction
  5. the science that deals with chemicals and properties
  6. a change of material into another
  7. reactants to products
  8. holds molecules together
  9. a characteristic of a substance that can be observed without change`
Down
  1. a type of change where the physical properties undergo a change
  2. makes up everything
  3. releasing heat
  4. enduring chemical reaction without actually being a chemical reaction
  5. smallest unit of matter
  6. the ability to do work
  7. has weight
  8. 2 elements together
  9. absorbing heat

18 Clues: has weight • releasing heat • absorbing heat • makes up everything • 2 elements together • reactants to products • the ability to do work • smallest unit of matter • matter sticking together • holds molecules together • a change of material into another • the part that goes through change in a reaction • the form of energy transferred between two things • ...

Kiley bruegs 2024-05-15

Kiley bruegs crossword puzzle
Across
  1. when a water droplet doesn't want to separate
  2. a branch of science dealing with matter and elements
  3. what goes into a chemical reaction to get the product
  4. all matter has blank and takes up space
  5. baking soda nad vinegar
  6. pure substance/cannot be broken down into smaller substances
  7. the outcome of a chemical reaction
  8. a property that can be observed without changing the object
  9. everything is made up of blank
  10. a reaction that takes in heat
Down
  1. something increases the rate of a chemical reaction
  2. a change that does not change the chemical bonds
  3. melting point flammability etc
  4. building block of matter
  5. the amount of matter or mass an object has
  6. molecules are made of blank
  7. the ability to do work or cause change
  8. a reaction that releases heat

18 Clues: baking soda nad vinegar • building block of matter • molecules are made of blank • a reaction that releases heat • a reaction that takes in heat • melting point flammability etc • everything is made up of blank • the outcome of a chemical reaction • the ability to do work or cause change • all matter has blank and takes up space • the amount of matter or mass an object has • ...

Chapter 16/17 Vocabulary Review 2015-12-15

Chapter 16/17 Vocabulary Review crossword puzzle
Across
  1. a type of protein used to speed up chemical reactions in living things
  2. a bond that transfers one or more electrons from one atom to another, resulting in attraction between oppositely charged ions.
  3. a fat in which the carbon atoms are surrounded by as many hydrogen atoms as possible
  4. a representation of a compound that includes the symbols and ratios of atoms of each element in the compound
  5. a compound that is composed of long chains of smaller molecules
  6. a group of energy-rich compounds that are made from carbon, hydrogen, and oxygen and that include fats, waxes, and oils
  7. a chemical reaction in which one element replaces a similar element in a compound
  8. the electrons in the highest, unfilled energy level of an atom
  9. a fat that has fewer hydrogen atoms because double bonds exist among some of the carbon atoms
  10. a branch of chemistry that specializes in the study of carbon compounds, also known as organic molecules
  11. a chemical reaction in which ions from two compounds in a solution exchange places to produce two new compounds
  12. a type of nucleic acid that contains the genetic code for an organism
  13. a group of energy-rich compounds that are made from carbon, hydrogen, and oxygen and that includes sugars and starches
  14. a group of very large molecules made of carbon, hydrogen, oxygen, and sometimes sulfur.
  15. a chemical reaction in which two or more substances combine to form a new compound (A + B = AB)
  16. a starting ingredient in a chemical reaction
  17. a quantity that indicates the charge on an atom when it gains, loses, or shares electrons during bond formation
Down
  1. A bond that forms when atoms transfer or share electrons
  2. the sum of the atomic mass values of the atoms in a chemical formula
  3. a chemical reaction in which a compound is broken down into two or more smaller substances
  4. the number of atoms or molecules in a mole of any substance
  5. a solid that forms and is insoluable in a reaction mixture
  6. a new substance formed in a chemical reaction
  7. a group of smaller molecules that are the building blocks of proteins
  8. a principle that states that the total mass of the reactants equals the total mass of the products in a chemical reaction
  9. a chemical bond formed by atoms that are sharing one or more electrons
  10. the process of breaking chemical bonds in one or more substances and the reforming of new bonds to create new substances
  11. the formation of polymers by a series of addition reactions
  12. an atom (or group) that has an electric charge other than zero. Created when an atom gains or loses an electron.
  13. a unit of any substance that contains the Avogadro number of atoms or molecules
  14. a chemical reaction that results in a large amount of energy being released when a carbon compound combines with oxygen
  15. compounds made of long, repeating chains of smaller molecules called nucleotides
  16. the mass, in grams, of one mole of a compound
  17. a method for representing an atom's valence electrons using dots around the elemental symbol
  18. a chemical compound that consists of two elements
  19. an expression of a chemical reaction using chemical formulas and symbols
  20. a whole number placed in front of a chemical formula in a chemical equation

37 Clues: a starting ingredient in a chemical reaction • a new substance formed in a chemical reaction • the mass, in grams, of one mole of a compound • a chemical compound that consists of two elements • A bond that forms when atoms transfer or share electrons • a solid that forms and is insoluable in a reaction mixture • ...

Chemical reactions and equations 2025-04-26

Chemical reactions and equations crossword puzzle
Across
  1. A reaction where one element replaces another in a compound.
  2. Gain of oxygen or loss of hydrogen in a reaction.
  3. A reaction that releases heat energy.
  4. A reaction where two or more substances combine to form one.
  5. A substance that speeds up a chemical reaction without being consumed.
  6. The spoilage of food containing fats and oils due to oxidation.
  7. Loss of oxygen or gain of hydrogen in a reaction.
  8. A reaction that absorbs heat energy.
  9. Substances formed as a result of a chemical reaction.
Down
  1. A reaction where a single substance breaks down into two or more substances.
  2. A reaction where two compounds exchange ions to form new compounds.
  3. The gradual destruction of metals due to reactions with air or moisture.
  4. Substances that undergo chemical change in a reaction.
  5. An insoluble solid that forms during a chemical reaction in a solution.
  6. The process in which glucose reacts with oxygen to release energy in cells.

15 Clues: A reaction that absorbs heat energy. • A reaction that releases heat energy. • Gain of oxygen or loss of hydrogen in a reaction. • Loss of oxygen or gain of hydrogen in a reaction. • Substances formed as a result of a chemical reaction. • Substances that undergo chemical change in a reaction. • A reaction where one element replaces another in a compound. • ...

Chapter 7 Vocab 2023-01-03

Chapter 7 Vocab crossword puzzle
Across
  1. a chemical reaction that releases energy to its surroundings
  2. a representation of a chemical reaction in which the reactants and products are expressed as formulas
  3. replacement reaction - a chemical reaction in which two compounds exchange positive ions and form new compounds
  4. substances that undergo change in a chemical reaction
Down
  1. a chemical reaction in which a compound breaks down into two or more simpler substances
  2. numbers that appear before a formula in a chemical equation to show the relative proportions of each reactant and product
  3. reaction a chemical reaction in which two or more substances react to form a single substance
  4. replacement reaction - 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 amount of a substance that contains approximately 6.02 x 1023 particles of the substance
  7. new substances formed as a result of a chemical reaction
  8. the mass of one mole of a substance

12 Clues: the energy stored in chemical bonds • the mass of one mole of a substance • substances that undergo change in a chemical reaction • new substances formed as a result of a chemical reaction • a chemical reaction that releases energy to its surroundings • a chemical reaction in which a compound breaks down into two or more simpler substances • ...

unit 4: reactions 2017-05-10

unit 4: reactions crossword puzzle
Across
  1. / a chemical reactions in which a substance reacts rapidly with oxygen, often producing heat and light.
  2. / A change ( chemical) that requires or absorbs heat.
  3. / A change (chemical reactions) that releases heat.
  4. / A compound breaks down into 2 or more simpler substances(one thing becoming 2 or more.
  5. Replacement / a chemical reaction in which two compounds exchange positive ions and form two new compounds.
  6. Equation / a representation of a chemical reaction in which the reactants and products are expressed as formulas
  7. Rate / the rate at which reactants change into products overtime
Down
  1. / 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.
  2. / the number that is written below the element that lets you know the amount of atoms it has.
  3. / a substance that undergoes change in a chemical reaction
  4. Replacement / a chemical reaction in which one element takes the place of another element in a compound.
  5. / (chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected
  6. / the combination of 2 or more substances to form a compound (things combining together to become one.
  7. / new substances formed as a result of a chemical reaction

14 Clues: / A change (chemical reactions) that releases heat. • / A change ( chemical) that requires or absorbs heat. • / a substance that undergoes change in a chemical reaction • / new substances formed as a result of a chemical reaction • Rate / the rate at which reactants change into products overtime • ...

Rate of Reactions - Concentration 2024-08-19

Rate of Reactions - Concentration crossword puzzle
Across
  1. A group of atoms bonded together, representing the smallest unit of a chemical compound.
  2. A principle that explains how reactions occur, involving collision and energy.
  3. A material involved in a chemical reaction.
  4. High concentration of harmful substances in the air can lead to faster degradation of buildings and health.
  5. The relationship between concentration and rate in a first-order reaction.
  6. Required interaction for a reaction to occur between molecules.
  7. The speed at which a chemical reaction occurs.
  8. A type of reaction that occurs faster when oxygen concentration is increased, such as in a fire.
  9. A factor that affects reaction rate by influencing the energy of collisions.
Down
  1. A factor that affects reaction rates in gases; increasing it increases concentration.
  2. Describes large-scale applications where concentration control is vital, such as in chemical manufacturing.
  3. Energy: The minimum energy required for a reaction to occur.
  4. The amount of a substance in a given volume.
  5. The area of a solid reactant exposed to a reaction; increasing this area usually increases reaction rate.
  6. A substance that speeds up a reaction without being consumed.
  7. An everyday process where increasing the concentration of acid (like vinegar) can speed up the tenderising of meat.
  8. The process where substances are transformed into different substances.
  9. The process in plants that increases with higher carbon dioxide concentration.

18 Clues: A material involved in a chemical reaction. • The amount of a substance in a given volume. • The speed at which a chemical reaction occurs. • Energy: The minimum energy required for a reaction to occur. • A substance that speeds up a reaction without being consumed. • Required interaction for a reaction to occur between molecules. • ...

Chemical Reactions & Equations - Crossword by Ahmad Rayyan 2024-04-30

Chemical Reactions & Equations - Crossword by Ahmad Rayyan crossword puzzle
Across
  1. A type of decomposition reaction where heat is involved is known as...
  2. The transformation of a chemical substance into another chemical substance is known as...
  3. The colour of Copper Oxide is...
  4. A reaction where a more reactive element displaces a lesser reactive element is known as...
  5. A reaction where compound is broken down into 2 or more elements is known as...
  6. The colour of the 2 gasses on the products side in Ferric Sulphate Hepta Hydrate is...
  7. A reaction where energy is produced in the form of heat is known as...
Down
  1. A reaction where energy is absorbed in the form of heatis known as...
  2. The least reactive element on the Reavtivity Series is...
  3. A type of Decomposition reaction where Light is involved is known as...
  4. A type of decomposition reaction where electric current is involved is known as...
  5. A reaction where 2 or more reactants combine to form only 1 product is known as...
  6. A reaction where ions are exchanged between 2 reactants to form new compounds is known as...
  7. Substances that take part in Chemical Reactions are called...
  8. The test taken to check the presence of Hydrogen is known as...
  9. Class of the Student is...
  10. Name of the Student is...
  11. New Substances that are formed after a Chemical Reaction are called...
  12. The name of the Greek Alphabet used to show heat is known as...
  13. The Color of Copper Sulphate is...
  14. The highest reactive element on Reactivity Series is...

21 Clues: Name of the Student is... • Class of the Student is... • The colour of Copper Oxide is... • The Color of Copper Sulphate is... • The highest reactive element on Reactivity Series is... • The least reactive element on the Reavtivity Series is... • Substances that take part in Chemical Reactions are called... • ...

chem 100 ch 7 2022-06-21

chem 100 ch 7 crossword puzzle
Across
  1. The perspective from the level of real quantities used in a lab. (2 words)
  2. The perspective from the level of atoms and molecules. (2 words)
  3. A depiction of energy changes as a function of the progress of a chemical reaction. (3 words)
  4. A product of a chemical reaction that does not appear in the balanced chemical equation. (2 words)
  5. A number that precedes the chemical formula for a reactant and/or product in a balanced chemical equation.
Down
  1. The use of balanced chemical equations to quantify reactants and products.
  2. The energy required for a chemical reaction to scale the energy hill. (2 words)
  3. A representation of a chemical process that uses chemical formulas to depict reactants and products. (2 words)
  4. A substance formed during a chemical reaction.
  5. Absorbing heat energy.
  6. A substance that undergoes a chemical reaction.
  7. Producing heat energy.
  8. A substance that increases the rate of a chemical reaction.

13 Clues: Absorbing heat energy. • Producing heat energy. • A substance formed during a chemical reaction. • A substance that undergoes a chemical reaction. • A substance that increases the rate of a chemical reaction. • The perspective from the level of atoms and molecules. (2 words) • The use of balanced chemical equations to quantify reactants and products. • ...

Semester 2 Final Exam Vocabulary Review 2018-06-10

Semester 2 Final Exam Vocabulary Review crossword puzzle
Across
  1. orbitals with different energies, shapes, etc., than the component atomic orbitals
  2. is the measure of bond strength in a chemical bond
  3. a formula giving the proportions of the elements present in a compound but not the actual numbers or arrangement of atoms
  4. the ratio of moles of one substance to the moles of another substance in a balanced equation
  5. also called a molecular bond, is a chemical bond that involves the sharing of electron pairs between atoms
  6. mass of a given substance (chemical element or chemical compound) divided by the amount of substance
  7. a chemical compound composed of ions held together by electrostatic forces termed ionic bonding
  8. a formula giving the number of atoms of each of the elements present in one molecule of a specific compound.
  9. valence electrons are represented by dots placed around the chemical symbol.
  10. in a chemical reaction is the substance that is totally consumed when the chemical reaction is complete
  11. percent by mass of each element present in a compound
  12. mass in an isolated system is neither created nor destroyed by chemical reactions or physical transformations
  13. a molecule in which a concentration of positive electric charge is separated from a concentration of negative charge.
  14. a chemical property that describes the tendency of an atom to attract a shared pair of electrons (or electron density) towards itself
  15. a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction
  16. reaction which a hydrocarbon reacts with oxygen to produce carbon dioxide and water.
  17. the sum of atomic masses of all atoms in a formula, regardless of whether or not the compound is molecular
  18. a type of chemical reaction where an element reacts with a compound and takes the place of another element in that compound
  19. chemical reaction in which two or more simple substances combine to form a more complex product
  20. defined as the distance between the centers of two covalently bonded atoms
  21. a charged chemical species (ion) composed of two or more atoms covalently bonded or of a metal complex that can be considered to be acting as a single unit
  22. refers to the number of lone pairs or bond locations around a particular atom in a molecule
  23. the lowest whole number ratio of ions represented in an ionic compound
Down
  1. is a type of chemical reaction where two compounds react, and the positive ions (cation) and the negative ions (anion) of the two reactants switch places, forming two new compounds or products.
  2. a type of chemical reaction in which a single compound breaks down into two or more elements or new compounds
  3. reactant in a chemical reaction that remains when a reaction stops
  4. a lasting attraction between atoms, ions or molecules that enables the formation of chemical compounds
  5. Uses words to describe chemical reactions
  6. in chemistry, a separation of electric charge
  7. contains exactly 6.022 × 10^23 entities
  8. substance composed of exactly two different elements
  9. Ions which can have lots of oxidative states
  10. the concept of mixing atomic orbitals into new hybrid orbitals
  11. a type of chemical bond where two atoms equally share a pair of electrons with each other
  12. a solid formed from a solution
  13. a formula that shows the arrangement of atoms in the molecule of a compound
  14. a type of chemical bond where a pair of electrons is unequally shared between two atoms.
  15. usually characterized by a chemical change, and they yield one or more products, which usually have properties different from the reactants
  16. chemical rule of thumb that reflects observation that atoms of main-group elements tend to combine in such a way that each atom has eight electrons in its valence shell
  17. a way of presenting information about the chemical proportions of atoms that constitute a particular chemical compound or molecule, using chemical element symbols, numbers
  18. the property of a solid, liquid or gaseous chemical substance called solute to dissolve in a solid, liquid or gaseous solvent
  19. a type of chemical bonding that involves the electrostatic attraction between oppositely charged ions

42 Clues: a solid formed from a solution • contains exactly 6.022 × 10^23 entities • Uses words to describe chemical reactions • Ions which can have lots of oxidative states • in chemistry, a separation of electric charge • is the measure of bond strength in a chemical bond • substance composed of exactly two different elements • ...

Unlock the Elements: Chemical Equations & Reactions 2025-04-27

Unlock the Elements: Chemical Equations & Reactions crossword puzzle
Across
  1. ____ agent that is reduced
  2. The starting substances in a chemical reaction
  3. Decomposition through heating
  4. A reaction releasing heat and light
  5. addition of oxygen.
  6. A reaction where a compound breaks down
  7. ____ agent that is oxidized
  8. reaction where one element replaces another in a compound
  9. Equation with equal numbers of atoms on both sides
  10. Decomposition through electricity
Down
  1. reaction that absorbs energy
  2. Decomposition through Light
  3. reaction that gives off heat
  4. These are formed as a result of a chemical reaction
  5. A reaction where substance combine
  6. removal of oxygen.
  7. An insoluble solid that is sometimes formed
  8. speeds up a reaction but is not used up in the process

18 Clues: removal of oxygen. • addition of oxygen. • ____ agent that is reduced • Decomposition through Light • ____ agent that is oxidized • reaction that absorbs energy • reaction that gives off heat • Decomposition through heating • Decomposition through electricity • A reaction where substance combine • A reaction releasing heat and light • A reaction where a compound breaks down • ...