chemical reaction Crossword Puzzles

Chemical Reactions! 2020-05-21

Chemical Reactions! crossword puzzle
Across
  1. - Firm and Stable in Shape.
  2. equation - Chemical reaction expressed in words.
  3. - two or more elements bonded together.
  4. - a Compound made up of ions
  5. - Atom where they have the same number of protons.
  6. equation - Calculates the value of dependent variables.
  7. equation - Formula where reactants are on the left.
  8. - formula written in this way H2O
  9. - Contains Water.
  10. - substance that undergoes change.
Down
  1. - Freely moves in shape.
  2. - Number infront of formula, Ex. 2H2O
  3. - Result of Chemical reaction.
  4. - Consists molecules
  5. - Solid, typically hard and shiny.
  6. metal - Substance that isn't a metal.
  7. - Moves free with no boundaries.
  8. - Increases rate of chemical reaction.
  9. reaction - involves rearrangement of the molecular or ionic structure of a substance.
  10. - Consists of one single atom.

20 Clues: - Contains Water. • - Consists molecules • - Freely moves in shape. • - Firm and Stable in Shape. • - a Compound made up of ions • - Result of Chemical reaction. • - Consists of one single atom. • - Moves free with no boundaries. • - formula written in this way H2O • - Solid, typically hard and shiny. • - substance that undergoes change. • - Number infront of formula, Ex. 2H2O • ...

Chemistry Review 2018-05-09

Chemistry Review crossword puzzle
Across
  1. negatively charged particle
  2. when chemicals are combining together to make something new
  3. on the right side of the reaction arrow
  4. inner transition elements starting with a
  5. amount of substance per unit volume
  6. what electron sublevels are partitioned into
  7. the number that is changed for balancing purposes
  8. type of reaction where products can form reactants
  9. when there is no net change in a reaction
  10. can speed up a reaction
  11. neutral particle
  12. the law of conservation of ____ that chemical equations are balanced to
  13. the letters representing elements on the periodic table
Down
  1. solid that is formed as a macroscopic chemical change indicator
  2. the number of major classes for chemical reactions
  3. positively charged particle
  4. type of spectra that provide info on energy levels
  5. inner transition element starting with l
  6. on the left side of the reaction arrow
  7. area around the nucleus where electrons are located
  8. can slow down a reaction
  9. the highest number valence electrons can go up to
  10. where protons and neutrons are located
  11. where protons, neutron, and electrons are located

24 Clues: neutral particle • can speed up a reaction • can slow down a reaction • positively charged particle • negatively charged particle • amount of substance per unit volume • on the left side of the reaction arrow • where protons and neutrons are located • on the right side of the reaction arrow • inner transition element starting with l • inner transition elements starting with a • ...

Chemical Reactions Crossword 2022-05-24

Chemical Reactions Crossword crossword puzzle
Across
  1. A chemical equation expressed in words instead of formulas
  2. An endothermic reaction with two products and one reactant
  3. A reaction where two compounds swap anions
  4. An exothermic reaction with two reactants and one product
  5. The symbolic representation of the elements, quantities, reactants and products in a chemical reaction
  6. A substance which makes the reactants react faster
  7. A chemical equation without coefficients
  8. A reaction which requires oxygen and produces carbon dioxide and water
  9. An equation where each element appears in the same ratio on the reactants side and on the products side
Down
  1. A number which describes how many of a COMPLETE reactant or product appears in a chemical equation
  2. The elements arranged by reactivity from highest to lowest form this
  3. A reaction where an element moves from one compount to another
  4. A number which describes how many atoms of an element or polyatomic ion appear in a compound
  5. Chemical reactions written with a ⇌ instead of a → can be described as this
  6. The sign which separates the reactants from the products in a chemical equation
  7. The sign which separates two products or two reactants in a chemical equation

16 Clues: A chemical equation without coefficients • A reaction where two compounds swap anions • A substance which makes the reactants react faster • An exothermic reaction with two reactants and one product • A chemical equation expressed in words instead of formulas • An endothermic reaction with two products and one reactant • ...

Chemistry vocab 2023-10-02

Chemistry vocab crossword puzzle
Across
  1. change a change of one substance into another substance
  2. a substance that is present at the beginning of a chemical reaction, takes part in the reaction, and is changed into a new substance
  3. a group of atoms that are held together by covalent bonds so that they move together
  4. a substance that is evenly spread throughout. Particles not distinguishable.
  5. a horizontal row in the periodic table of the elements that have varying properties
  6. an atom of one element that has a different number of neutrons than another atom of the same element
  7. a neutral part, located in an atoms nucleus
  8. an atom of group of atoms that has a positive or negative electric charge, forms by gaining or losing electrons
  9. a solid substance, that forms as a result of a chemical reaction between chemicals in two liquids
  10. a vertical column in the periodic table of the elements that have similar properties
  11. a substance that increases the rate of a chemical reaction, but is not consumed by the reaction
  12. the number written slightly below into the rate of a chemical symbol that shows how many atoms of an element are in a compound
Down
  1. a combination of two or more substances that do not combine chemically, but remain the same individual substances
  2. a substance made up of two or more different types of atoms bonded together
  3. a substance that cannot be broken down into a simpler substances by ordinary chemical changes
  4. a negatively charged particle located outside of an atoms nucleus about 2000 times smaller than either a proton or neutron
  5. of positively charged particle, located in an atoms nucleus
  6. a substance that is not uniform throughout
  7. the number before a chemical formula indicating how many molecules are involved in a chemical reaction
  8. change a usually reversible change in the physical properties of a substance, as size and shape
  9. number the total number of protons in an atoms nucleus
  10. a substance formed by a chemical reaction, made by the rearrangement of atoms in bonds and reactants
  11. mass number the total number of protons and neutrons in an atoms nucleus

23 Clues: a substance that is not uniform throughout • a neutral part, located in an atoms nucleus • number the total number of protons in an atoms nucleus • change a change of one substance into another substance • of positively charged particle, located in an atoms nucleus • mass number the total number of protons and neutrons in an atoms nucleus • ...

Chemistry Crossword 2014-11-07

Chemistry Crossword crossword puzzle
Across
  1. releases heat energy.
  2. a table in which the elements are organized by their physical and chemical properties.
  3. a change where two or more substances react to create a new substance.
  4. a mixture of two or more pure substances that look like one.
  5. number of protons in the nucleus in one atom of an element.
  6. mass of one atom or an element.
  7. absorbs heat energy.
  8. a substance that reacts with another substance or substances in a chemical reaction to create a new substance with different products or properties.
Down
  1. substance that helps speed up a chemical reaction.
  2. a combination of pure substances, not a compound.
  3. a chemical reaction that occurs when oxygen reacts with a substance to form a new substance, the process is fast.
  4. group one elements in the periodic table.
  5. a substance made up of only one kind or matter, which has a unique set of properties.
  6. a pure substance that cannot be broken down into other substances, only one type of atom.
  7. a change that results when two or more substances react to create a different substance.
  8. a change in appearance or state of a substance that does not change composition.
  9. an experiment in which all the reactants and all products of a chemical reaction are accounted for.
  10. a cloudy mixture where tiny particles of one substance are held within another and the particles cannot be separated out of the other substance.
  11. chemical combination of two or more elements in a specific ratio.
  12. a new substance produced in a chemical reaction between reactants.
  13. an atom or a group of atoms that has become electrically charged because it has lost or gained electrons.
  14. group 17 elements on the periodic table.
  15. is a slow chemical change that occurs when oxygen in the air reacts with a metal.
  16. an experiment in which one or more products of a chemical reaction can escape.

24 Clues: absorbs heat energy. • releases heat energy. • mass of one atom or an element. • group 17 elements on the periodic table. • group one elements in the periodic table. • a combination of pure substances, not a compound. • substance that helps speed up a chemical reaction. • number of protons in the nucleus in one atom of an element. • ...

Science Crossword 2017-11-07

Science Crossword crossword puzzle
Across
  1. cloudy mixture in which tiny particles of one substance are held within another and particles cannot be separated out from the other substance
  2. chemical reaction that releases energy
  3. catalyst involved in chemical reactions in living things
  4. group 2 elements in the periodic table; their reactivity is not as strong as that of the alkali metals
  5. slow chemical change that occurs when oxygen in the air reacts with a metal
  6. change that results when two or more substances react to create a different substance or substances
  7. a reaction that takes place when two or more substances react to form new substances
  8. atom that has become electrically charged because it has lost or gained electrons
  9. invisible negatively charged particle that orbits the nucleus of an atom
  10. chemical combination of two or more elements in a specific ratio
  11. pure substance that cannot be broken down into other substances
  12. an experiment in which all reactants and all products of a chemical reaction are accounted for
  13. the most reactive non-metals
  14. chemical reaction that occurs when oxygen reacts with a substance to form a new substance and give off energy
  15. mass of one atom of an element calculated from the total number of protons, neutrons, and electrons of that atom
  16. vertical column of elements in the periodic table that have similar chemical properties
Down
  1. combination of symbols that represent a compound
  2. orbit of electrons around the nucleus of an atom
  3. chemical reaction that absorbs energy
  4. the mass of the products always equals the mass of the reactants
  5. energy stored in chemicals and released when chemicals react
  6. substance that helps a chemical reaction to proceed more quickly
  7. number of protons in the nucleus of one atom of an element
  8. compound that dissolves in water to form a solution with a pH lower than 7
  9. group 1 elements in the periodic table, not including hydrogen; the most reactive of the metals

25 Clues: the most reactive non-metals • chemical reaction that absorbs energy • chemical reaction that releases energy • combination of symbols that represent a compound • orbit of electrons around the nucleus of an atom • catalyst involved in chemical reactions in living things • number of protons in the nucleus of one atom of an element • ...

Chemical Reaction Vocabulary 2022-04-22

Chemical Reaction Vocabulary crossword puzzle
Across
  1. a process that absorbs energy
  2. a system that does not allow matter or energy to enter or escape
  3. happens when one chemical substance is transformed into one or more different substances as a result of a change in the arrangement of atoms, such as when iron becomes rust
  4. to form an insoluble solid (cannot be dissolved) when two liquid solutions are mixed
  5. an early sample of a product that gives information about how the device or system works
Down
  1. mass is neither created nor destroyed during a chemical reaction
  2. a symbolic representation of the reactants and products in a chemical reaction
  3. a process that releases energy
  4. a system that allows matter or energy to enter or escape
  5. saved nothing lost or gained
  6. the total energy of motion of the particles in a sample of a substance
  7. the physical form of matter-solid, liquid, or gas
  8. to mix into another substance

13 Clues: saved nothing lost or gained • a process that absorbs energy • to mix into another substance • a process that releases energy • the physical form of matter-solid, liquid, or gas • a system that allows matter or energy to enter or escape • mass is neither created nor destroyed during a chemical reaction • a system that does not allow matter or energy to enter or escape • ...

Chemical Reaction Vocabulary 2022-04-22

Chemical Reaction Vocabulary crossword puzzle
Across
  1. a system that allows matter or energy to enter or escape
  2. the physical form of matter-solid, liquid, or gas
  3. the total energy of motion of the particles in a sample of a substance
  4. to mix into another substance
  5. a process that releases energy
  6. to form an insoluble solid (cannot be dissolved) when two liquid solutions are mixed
  7. mass is neither created nor destroyed during a chemical reaction
Down
  1. a symbolic representation of the reactants and products in a chemical reaction
  2. a system that does not allow matter or energy to enter or escape
  3. a process that absorbs energy
  4. an early sample of a product that gives information about how the device or system works
  5. saved nothing lost or gained
  6. happens when one chemical substance is transformed into one or more different substances as a result of a change in the arrangement of atoms, such as when iron becomes rust

13 Clues: saved nothing lost or gained • a process that absorbs energy • to mix into another substance • a process that releases energy • the physical form of matter-solid, liquid, or gas • a system that allows matter or energy to enter or escape • a system that does not allow matter or energy to enter or escape • mass is neither created nor destroyed during a chemical reaction • ...

Chapter 10 Vocabulary 2025-01-06

Chapter 10 Vocabulary crossword puzzle
Across
  1. A substance made up of atoms of two or more different elements joined by chemical bonds
  2. A chemical reaction that breaks down compounds into simpler products. AB->A+B
  3. A chemical substance that is present at the start of a chemical reaction
  4. 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.
  5. of Conservation of Mass- The law that states that mass cannot be created or destroyed in ordinary chemical and physical changes
  6. A number written slightly below and to the right of a chemical symbol that shows how many atoms of an element are in a compound.
  7. A chemical change in which an element or a compound reacts with oxygen, often producing energy in the form of heat and light
Down
  1. A representation of a chemical reaction that uses symbols to show the relationship between the reactants and the products
  2. A pure substance made of only one kind of atom.
  3. A solid that forms from a solution during a chemical reaction.
  4. A substance produced after a chemical reaction occurs
  5. The reaction of the ions of acids and the ions of bases (hydronium ions and hydroxide ions) to form water molecules and a salt
  6. The process by which one or more substances change to produce one or more different substances
  7. A chemical reaction in which two or more substances combine to form a new compound

14 Clues: A pure substance made of only one kind of atom. • A substance produced after a chemical reaction occurs • A solid that forms from a solution during a chemical reaction. • A chemical substance that is present at the start of a chemical reaction • A chemical reaction that breaks down compounds into simpler products. AB->A+B • ...

Chapter 11 Vocabulary 2023-04-23

Chapter 11 Vocabulary crossword puzzle
Across
  1. A representation of a chemical reaction that uses symbols to show the relationship between the reactants and the products.
  2. Lists metals in order of decreasing reactivity.
  3. An equation that shows dissolved ionic compounds as dissociated free ions.
  4. Each side of the equation has the same number of atoms of each element and mass is conserved.
  5. A chemical change in which two or more substances react to form a single new substance.
  6. A chemical equation that does not indicate the relative amounts of reactants and products.
  7. Small whole numbers that are placed in front of the formulas in an equation in order to balance it.
  8. An equation for a reaction in solution that shows only those particles that are directly involved in the chemical change.
Down
  1. A chemical change in which one element replaces a second element in a compound.
  2. A chemical change in which a single compound breaks down into two or more simpler products.
  3. An ion that appears on both sides of an equation and is not directly involved in the reaction.
  4. A chemical change involving an exchange of positive ions between two compounds.
  5. A chemical change in which an element or a compound reacts with oxygen, often producing energy in the form of heat and light.
  6. A substance that speeds up the reaction but is not used up in the reaction.

14 Clues: Lists metals in order of decreasing reactivity. • An equation that shows dissolved ionic compounds as dissociated free ions. • A substance that speeds up the reaction but is not used up in the reaction. • A chemical change in which one element replaces a second element in a compound. • ...

Combustion Vocabs 2025-03-05

Combustion Vocabs crossword puzzle
Across
  1. reaction a process in which one or more reactant substances are converted to one or more product substances
  2. a chemical process in which fuel and oxidizing agents react, getting carbon dioxide and water
  3. a pure form of matter
  4. respiration a sires of chemical reactions that break down glucose to produce ATP
  5. a colorless, odorless gas which is involved in cellular respiration and photosynthesis
  6. one of a group of carbohydrates known as simple sugar
  7. equation a way to represent a chemical reaction
  8. substance/s that are formed from chemical reactions
  9. two or more atoms that is connected by a chemical bond
  10. the measure of how much stuff is in an object
Down
  1. change the process that chemicals interact to form new chemicals
  2. an inorganic compound with the chemical formula H₂O
  3. any matter that is a source of heat
  4. a chemical process that occurs in plants and algae when exposed to sunlight
  5. the capacity for doing work
  6. the source of energy for use and storage in cellular level
  7. a substance that changes when it is combined with another substance in a chemical reaction
  8. the burning of any substance in gaseous, liquid, or solid form
  9. equation for a chemical reaction in which the number of atoms in the reaction and total charge are the same
  10. dioxide a clear gas, which is a product of cellular respiration
  11. of conservation of mass in a chemical reaction, the total mass of products must be equal to the total mass of reactant

21 Clues: a pure form of matter • the capacity for doing work • any matter that is a source of heat • the measure of how much stuff is in an object • equation a way to represent a chemical reaction • an inorganic compound with the chemical formula H₂O • substance/s that are formed from chemical reactions • one of a group of carbohydrates known as simple sugar • ...

Chemistry Crossword 2017-11-11

Chemistry Crossword crossword puzzle
Across
  1. orbit of electrons around the nucleus of an atom
  2. an experiment in which all reactants and all products of a chemical reaction are accounted for
  3. change that results when two or more substances react to create a different substance or substances
  4. group 2 elements in the periodic table; their reactivity is not as strong as that of the alkali metals
  5. the mass of the products always equals the mass of the reactants
  6. energy stored in chemicals and released when chemicals react
  7. mass of one atom of an element calculated from the total number of protons, neutrons, and electrons of that atom
  8. chemical reaction that releases energy
  9. cloudy mixture in which tiny particles of one substance are held within another and particles cannot be separated out from the other substance
  10. invisible negatively charged particle that orbits the nucleus of an atom
  11. vertical column of elements in the periodic table that have similar chemical properties
  12. a reaction that takes place when two or more substances react to form new substances
  13. number of protons in the nucleus of one atom of an element
  14. catalyst involved in chemical reactions in living things
Down
  1. combination of symbols that represent a compound
  2. group 1 elements in the periodic table, not including hydrogen; the most reactive of the metals
  3. chemical reaction that absorbs energy
  4. atom that has become electrically charged because it has lost or gained electrons
  5. slow chemical change that occurs when oxygen in the air reacts with a metal
  6. pure substance that cannot be broken down into other substances
  7. chemical combination of two or more elements in a specific ratio
  8. substance that helps a chemical reaction to proceed more quickly
  9. chemical reaction that occurs when oxygen reacts with a substance to form a new substance and give off energy
  10. compound that dissolves in water to form a solution with a pH lower than 7
  11. the most reactive non-metals

25 Clues: the most reactive non-metals • chemical reaction that absorbs energy • chemical reaction that releases energy • combination of symbols that represent a compound • orbit of electrons around the nucleus of an atom • catalyst involved in chemical reactions in living things • number of protons in the nucleus of one atom of an element • ...

Chemistry Crossword 2017-11-07

Chemistry Crossword crossword puzzle
Across
  1. an experiment in which all reactants and all products of a chemical reaction are accounted for
  2. combination of symbols that represent a compound
  3. chemical combination of two or more elements in a specific ratio
  4. number of protons in the nucleus of one atom of an element
  5. mass of one atom of an element calculated from the total number of protons, neutrons, and electrons of that atom
  6. the most reactive non-metals
  7. group 2 elements in the periodic table; their reactivity is not as strong as that of the alkali metals
  8. vertical column of elements in the periodic table that have similar chemical properties
  9. the mass of the products always equals the mass of the reactants
  10. substance that helps a chemical reaction to proceed more quickly
  11. chemical reaction that releases energy
  12. atom that has become electrically charged because it has lost or gained electrons
  13. orbit of electrons around the nucleus of an atom
  14. chemical reaction that occurs when oxygen reacts with a substance to form a new substance and give off energy
Down
  1. catalyst involved in chemical reactions in living things
  2. a reaction that takes place when two or more substances react to form new substances
  3. slow chemical change that occurs when oxygen in the air reacts with a metal
  4. group 1 elements in the periodic table, not including hydrogen; the most reactive of the metals
  5. chemical reaction that absorbs energy
  6. change that results when two or more substances react to create a different substance or substances
  7. cloudy mixture in which tiny particles of one substance are held within another and particles cannot be separated out from the other substance
  8. energy stored in chemicals and released when chemicals react
  9. invisible negatively charged particle that orbits the nucleus of an atom
  10. pure substance that cannot be broken down into other substances
  11. compound that dissolves in water to form a solution with a pH lower than 7

25 Clues: the most reactive non-metals • chemical reaction that absorbs energy • chemical reaction that releases energy • combination of symbols that represent a compound • orbit of electrons around the nucleus of an atom • catalyst involved in chemical reactions in living things • number of protons in the nucleus of one atom of an element • ...

chemistry 2021-10-04

chemistry crossword puzzle
Across
  1. change alters chemical properties
  2. solid, liquid or gaseous.
  3. part mixture of substances with two or more states
  4. state with definite volume but not shape.
  5. substances formed in a chemical reaction.
  6. present at the beginning of chemical reaction
  7. study of patterns of chemical behavior
  8. prop. of a substances
  9. prop cause behavior in chemical rctns
Down
  1. state with definite volume and shape
  2. a change in physical properties
  3. properties which can be measured
  4. used to start a chemical reaction, hydrochloric
  5. descriptive properties Smell taste
  6. state with no definite volume or shape.
  7. a substances that will flow(gas or liquid state)

16 Clues: prop. of a substances • solid, liquid or gaseous. • a change in physical properties • properties which can be measured • change alters chemical properties • descriptive properties Smell taste • state with definite volume and shape • prop cause behavior in chemical rctns • study of patterns of chemical behavior • state with no definite volume or shape. • ...

Chemistry vocab 2023-10-02

Chemistry vocab crossword puzzle
Across
  1. a substance that is not uniform throughout
  2. change a change of one substance into another substance
  3. an atom of one element that has a different number of neutrons than another atom of the same element
  4. a combination of two or more substances that do not combine chemically, but remain the same individual substances
  5. a substance formed by a chemical reaction, made by the rearrangement of atoms in bonds and reactants
  6. a substance that is evenly spread throughout. Particles not distinguishable.
  7. a group of atoms that are held together by covalent bonds so that they move together
  8. mass number the total number of protons and neutrons in an atoms nucleus
  9. a neutral part, located in an atoms nucleus
  10. change a usually reversible change in the physical properties of a substance, as size and shape
  11. a substance that is present at the beginning of a chemical reaction, takes part in the reaction, and is changed into a new substance
  12. a solid substance, that forms as a result of a chemical reaction between chemicals in two liquids
Down
  1. the number written slightly below into the rate of a chemical symbol that shows how many atoms of an element are in a compound
  2. a substance made up of two or more different types of atoms bonded together
  3. a substance that cannot be broken down into a simpler substances by ordinary chemical changes
  4. a horizontal row in the periodic table of the elements that have varying properties
  5. of positively charged particle, located in an atoms nucleus
  6. an atom of group of atoms that has a positive or negative electric charge, forms by gaining or losing electrons
  7. a negatively charged particle located outside of an atoms nucleus about 2000 times smaller than either a proton or neutron
  8. the number before a chemical formula indicating how many molecules are involved in a chemical reaction
  9. a substance that increases the rate of a chemical reaction, but is not consumed by the reaction
  10. a vertical column in the periodic table of the elements that have similar properties
  11. number the total number of protons in an atoms nucleus

23 Clues: a substance that is not uniform throughout • a neutral part, located in an atoms nucleus • number the total number of protons in an atoms nucleus • change a change of one substance into another substance • of positively charged particle, located in an atoms nucleus • mass number the total number of protons and neutrons in an atoms nucleus • ...

Energy Flow 2023-06-20

Energy Flow crossword puzzle
Across
  1. Substance that is changed during a chemical reaction.
  2. Type of consumer that gets energy/nutrients from dead matter
  3. (Usually a protein) that speeds up a biochemical reaction by lowering its activation eneratalyst
  4. Type of consumer that gets energy from eating meat
  5. An energy-carrying molecule that carries/stores energy for cell functions; the main energy currency for the cell
  6. When an enzyme’s active site loses its specific shape, causing a loss in biological activity
  7. A reaction that overall releases more energy (in the form of heat or light) than it absorbs.
  8. A reaction that overall absorbs more energy (in the form of heat or light) than it releases.
  9. Substances that speed up reactions without being permanently altered.
  10. Heterotroph; gets energy from living or once-living sources
Down
  1. The amount of energy needed to make a chemical reaction start.
  2. Type of consumer that gets energy from eating vegetation
  3. Substance that is made during a chemical reaction.
  4. Type of consumer that gets energy from eating meat and vegetation
  5. Reactions that build larger molecules from smaller ones.
  6. Location on an enzyme where the substrate binds.
  7. Autotroph; gets energy from nonliving sources like the sun
  8. Reactions break down larger molecules into simpler compounds.
  9. All of the chemical reactions within each cell of an organism.
  10. The breaking and forming of bonds between different substances during chemical changes.

20 Clues: Location on an enzyme where the substrate binds. • Substance that is made during a chemical reaction. • Type of consumer that gets energy from eating meat • Substance that is changed during a chemical reaction. • Type of consumer that gets energy from eating vegetation • Reactions that build larger molecules from smaller ones. • ...

Science Review Crossword Puzzle 2018-01-17

Science Review Crossword Puzzle crossword puzzle
Across
  1. A characteristic of a pure substance that can be observed without changing it into another substance
  2. A reaction that release energy, usually in the form of heat
  3. Two or more substances that are together in the same place but their atoms are not chemically bonded
  4. A mixture that contains as much dissolved solute as is possible at a given temperature
  5. A mixture in which particles can be seen and easily separated by settling or filtration
  6. A reaction that absorbs energy
  7. The basic particle from which all elements are made; the smallest particle of an element that has that properties of that element
  8. A short, easy way to show a chemical reaction, using symbols
  9. A tiny, negatively charged particle that moves around the outside of the nucleus of an atom
  10. A small particle in the nucleus of the atom, with no electrical charge
  11. An atom or group of atoms that has become electrically charged
  12. The average mass of all the isotopes of an element
  13. The attraction between oppositely charges ions
Down
  1. The electrons that are in the highest energy level of an atom and that are involved in chemical bonding
  2. A region of an atom in which electrons of the same energy are likely to be found
  3. A reaction in which one element replaces another in a compound or when two elements in different compounds trade places
  4. A material that decreases the rate of a reaction
  5. The minimum amount of energy needed to start a chemical reaction
  6. A substance that cannot be broken down into any other substances by chemical or physical means
  7. A chemical reaction in which two or more simple substances combine to form a new, more complex substance
  8. Small, positively charged particles that are found in the nucleus of an atom
  9. The amount of space that matter occupies
  10. A mixture that has a lot of solute dissolved in it
  11. A compound that consists of positive and negative ions
  12. The amount of matter in an object

25 Clues: A reaction that absorbs energy • The amount of matter in an object • The amount of space that matter occupies • The attraction between oppositely charges ions • A material that decreases the rate of a reaction • A mixture that has a lot of solute dissolved in it • The average mass of all the isotopes of an element • ...

Unit 5 Pre-IB Chemistry 2024-12-05

Unit 5 Pre-IB Chemistry crossword puzzle
Across
  1. what is formed or the result at the end of a chemical reaction.
  2. a chemical reaction where a hydrocarbon reacts with oxygen and results in heat, carbon dioxide, and water.
  3. a substance made up of 2 or more elements.
  4. the start of a chemical reaction and the chemical substance that is present.
  5. an atom with an electrical charge
  6. a number in front of a symbol or chemical formula which indicates how many molecules or atoms are involved.
  7. a chemical reaction where ONE substance/reactant breaks down and results in multiple products.
  8. the kind of bond where the sharing of electrons occurs between atoms.
Down
  1. a chemical reaction where two compounds switch their elements with each other.
  2. a chemical reaction where a single element combines with another by replacing the other element that was previously in the compound
  3. a compound made up of 2 of the same elements.
  4. a small number on the bottom right of a symbol that indicates the number of atoms of the symbol it is attached too
  5. a chemical reaction where at least 2 or more elements combine and result in ONE product.
  6. the kind of bond where an atom gives electrons to another atom.

14 Clues: an atom with an electrical charge • a substance made up of 2 or more elements. • a compound made up of 2 of the same elements. • what is formed or the result at the end of a chemical reaction. • the kind of bond where an atom gives electrons to another atom. • the kind of bond where the sharing of electrons occurs between atoms. • ...

Chemistry Crossword 2021-10-20

Chemistry Crossword crossword puzzle
Across
  1. combustion reaction is a reaction in which a substance reacts with oxygen gas, releasing energy in the form of light and heat
  2. formation of an insoluble salt when two solutions containing soluble salts are combined.
  3. listed in descending order of reactivity.
  4. the amount of product resulting from a chemical reaction
  5. a substance that enters into and is altered in the course of a chemical reaction.
  6. contain two atoms that are chemically bond
  7. reactions or processes that release energy
  8. number placed in front of symbols or formulas in a chemical equation to indicate their relative amount.
  9. a process in which one or more substances, also called reactants, are converted to one or more different substances, known as products
  10. Matter occurs in four states: solids, liquids, gases, and plasma
Down
  1. a compound breaks down into two or more simpler substances
  2. occur when parts of two ionic compounds are exchanged, making two new compounds.
  3. a new aqueous compound and a different pure element will be generated as products.
  4. a conversion factor that relates the amounts in moles of any two substances in a chemical reaction
  5. states that in a chemical reaction mass is neither created nor destroyed.
  6. eactions that require external energy
  7. the correct number of reactants and products to satisfy the Law of Conservation of Mass
  8. An insoluble substance is a substance (solid) that will not dissolve in a solvent even after mixing (eg; sand and water)
  9. reactions that occur when two different atoms or molecules interact to form a different molecule or compound
  10. a substance that is formed as the result of a chemical reaction
  11. a solid formed by a change in a solution
  12. The solid that dissolves is called the 'solute

22 Clues: eactions that require external energy • a solid formed by a change in a solution • listed in descending order of reactivity. • contain two atoms that are chemically bond • reactions or processes that release energy • The solid that dissolves is called the 'solute • the amount of product resulting from a chemical reaction • ...

Chemistry Crossword 2013-07-09

Chemistry Crossword crossword puzzle
Across
  1. A good conductor of both electricity and heat and is an element or compound.
  2. A product of mixing.
  3. Lots of the same molecules joined or bonded together.
  4. The substances you end with in a chemical reaction.
  5. The function of something.
  6. A set of symbols that show the elements of a chemical compound.
  7. Something that increases the rate of a chemical reaction.
  8. The substances you start with in a chemical reaction.
  9. The act or process of generalising.
  10. A substance that can’t be broken down into other substances.
  11. An element that doesn’t have the physical and chemical properties that a metal usually has.
  12. The process of burning something.
  13. table A table that has chemical elements arranged in order of atomic number.
Down
  1. When a substance combines with other substances and goes through a change or transformation.
  2. When a complex molecule breaks down to make simpler ones.
  3. The area of the outside of an object.
  4. A law that means matter can’t be created or destroyed.
  5. The most basic unit of a chemical element that holds all the properties of that element.
  6. It expands freely to fill any space available and is an air like fluid substance.
  7. Something that lowers the activation energy in a reaction.
  8. It is not a liquid or gas and is firm and stable in shape.
  9. A conventional, printed or written figure used to represent something.
  10. It flows freely but has a constant volume.

23 Clues: A product of mixing. • The function of something. • The process of burning something. • The act or process of generalising. • The area of the outside of an object. • It flows freely but has a constant volume. • The substances you end with in a chemical reaction. • Lots of the same molecules joined or bonded together. • The substances you start with in a chemical reaction. • ...

Abbi B's Crossword Puzzle 2024-05-15

Abbi B's Crossword Puzzle crossword puzzle
Across
  1. When an object undergoes a change and becomes or produces a new substance
  2. The measure of average kinetic energy in an object
  3. The study of atoms, elements, compounds, and chemical or physical reactions
  4. Made up of two or more atoms
  5. Elements come together and make strong ____
  6. Everything has ____
  7. A substance made of two or more elements bound together
  8. The thing that reacts in a chemical reaction or change
  9. Releases heat
  10. The smallest form of matter
  11. Combining two or more different materials or substances
Down
  1. Speeds up a chemical reaction
  2. Opposite of a physical property
  3. Color, Weight, Smell
  4. A specific type of molecule
  5. When something changes due to something else
  6. The end result of a chemical reaction or change
  7. Solid, Liquid, Gas

18 Clues: Releases heat • Solid, Liquid, Gas • Everything has ____ • Color, Weight, Smell • A specific type of molecule • The smallest form of matter • Made up of two or more atoms • Speeds up a chemical reaction • Opposite of a physical property • Elements come together and make strong ____ • When something changes due to something else • The end result of a chemical reaction or change • ...

Quantities in Chemical Reaction 2022-06-09

Quantities in Chemical Reaction crossword puzzle
Across
  1. Mass of crucible/lid is 10.500g, mass of MgI2 x H20 and crucible\lid is 12.128g, mass of MgI2 (anhydrous) and crucible/lid is 11.572g.
  2. Use the ______ ratio to find the unknown moles.
  3. First step in stoichiometry is a _________ equation.
  4. Having the relationship between the quantities of reactants to products.
  5. The number of a famous man.
  6. The formula that is the true or actual ratio of atoms in compound.
  7. Moles x Molar mass=
Down
  1. BaCl2 x H20 is called an ______.
  2. The formula represented in simplest whole number ratio of atoms in compound.
  3. The substance that is not used up fully in a reaction.
  4. The given yield you calculated.
  5. A reactant that is limit to how much product made.
  6. hydroxide Identify the limiting reactant when 7.81 g HCl reacts wtih 5.24 g NaOH to produce NaCl and H2O.
  7. The "Law of ______ Proportion."
  8. contains no water
  9. Atomic mass unit
  10. A ceramic or metal container that holds substances to be melted.
  11. The yield given found during a live experiment.
  12. Identify the limiting reactant when 4.68 g of Fe reacts with 2.88 g of S to produce FeS.
  13. The molecular weight of a substance expressed in grams.

20 Clues: Atomic mass unit • contains no water • Moles x Molar mass= • The number of a famous man. • The given yield you calculated. • The "Law of ______ Proportion." • BaCl2 x H20 is called an ______. • Use the ______ ratio to find the unknown moles. • The yield given found during a live experiment. • A reactant that is limit to how much product made. • ...

Quantities in Chemical Reaction 2022-06-09

Quantities in Chemical Reaction crossword puzzle
Across
  1. The formula that is the true or actual ratio of atoms in compound.
  2. Mass of crucible/lid is 10.500g, mass of MgI2 x H20 and crucible\lid is 12.128g, mass of MgI2 (anhydrous) and crucible/lid is 11.572g.
  3. BaCl2 x H20 is called an ______.
  4. A reactant that is limit to how much product made.
  5. Use the ______ ratio to find the unknown moles.
  6. Having the relationship between the quantities of reactants to products.
  7. Moles x Molar mass=
  8. First step in stoichiometry is a _________ equation.
Down
  1. A ceramic or metal container that holds substances to be melted.
  2. The substance that is not used up fully in a reaction.
  3. The number of a famous man.
  4. The formula represented in simplest whole number ratio of atoms in compound.
  5. hydroxide Identify the limiting reactant when 7.81 g HCl reacts wtih 5.24 g NaOH to produce NaCl and H2O.
  6. The "Law of ______ Proportion."
  7. The molecular weight of a substance expressed in grams.
  8. Identify the limiting reactant when 4.68 g of Fe reacts with 2.88 g of S to produce FeS.
  9. The given yield you calculated.
  10. contains no water
  11. The yield given found during a live experiment.
  12. Atomic mass unit

20 Clues: Atomic mass unit • contains no water • Moles x Molar mass= • The number of a famous man. • The "Law of ______ Proportion." • The given yield you calculated. • BaCl2 x H20 is called an ______. • Use the ______ ratio to find the unknown moles. • The yield given found during a live experiment. • A reactant that is limit to how much product made. • ...

Chemical Reaction Crossword Puzzle 2024-01-27

Chemical Reaction Crossword Puzzle crossword puzzle
Across
  1. Equation where the ratios between the reactant and product side is not equal
  2. Includes elements from the D & F blocks and many have isotopes, often form 2+ and 3+
  3. Multiple reactants and one product
  4. Includes elements from the P-block and most bond with themselves
  5. Consisting of many atoms
  6. Responsible for when things burn and produces CO2 and H20
  7. Simple representation of valence electrons in a molecule
  8. The part of a chemical equation that undergoes change
  9. Two elements are switched with another after the reaction
  10. Process where one or more substances are converted to one or more different substances
  11. Unit of measurement for any amount of a substance
  12. A negatively charged ion, typically found in P-block
  13. A multiplier that goes before an atom/compound in a chemical reaction
  14. The bond between a metal and a nonmetal and does not use prefixes in nomenclature
  15. Always in Combustion and reacts with oxygen gas
Down
  1. Always produces salt and water
  2. Elements with a full valence shell and are inert and monoatomic
  3. One reactant and multiple products
  4. An atom or molecule gains a charge by either losing or gaining an electron
  5. Used to calculate the molar mass of a substance
  6. Matter/atoms are neither created nor destroyed, only rearranged
  7. Includes elements from the S-block and usually bond with elements in the P-block
  8. Separates reactants from products and shows
  9. A number after an atom that tells you how much of the atom there is
  10. The part of a chemical equation that is produced after undergoing a change
  11. The bond between two nonmetals and uses prefixes in nomenclature
  12. Equation where the ratios between the reactant and product side are equal
  13. An element is switched with another after the reaction
  14. A positively charged ion, typically found in S-block
  15. Molecule that is too unstable on its own and is typically bonded to itself

30 Clues: Consisting of many atoms • Always produces salt and water • One reactant and multiple products • Multiple reactants and one product • Separates reactants from products and shows • Used to calculate the molar mass of a substance • Always in Combustion and reacts with oxygen gas • Unit of measurement for any amount of a substance • ...

Chemical Reaction Crossword Puzzle 2020-04-23

Chemical Reaction Crossword Puzzle crossword puzzle
Across
  1. Table salt is an example of
  2. Two or more reactants combine to form a single
  3. Burning coal is an example of
  4. One reactant breaks down into two or more products
  5. Water is an example of
  6. Any substance that is consumed or used up during the reaction
  7. Smallest particle in a chemical element or compound
  8. Iron and water combining to make rust is an example of
  9. Copper is an example of
  10. A substance that speeds up a chemical reaction
  11. Consisting of one atom
Down
  1. Water is a ____ of methane and oxygen
  2. How many atoms or molecules an element has
  3. A number used to multiply a variable
  4. Complete transfer valence electrons between atoms
  5. One element replaces another in a single compound
  6. Hydrogen chloride is an example of
  7. A brick is an example of
  8. Oxygen is an example of
  9. Saltwater is an example of

20 Clues: Water is an example of • Consisting of one atom • Oxygen is an example of • Copper is an example of • A brick is an example of • Saltwater is an example of • Table salt is an example of • Burning coal is an example of • Hydrogen chloride is an example of • A number used to multiply a variable • Water is a ____ of methane and oxygen • How many atoms or molecules an element has • ...

Chemical Reaction: Precipitate Form 2025-11-12

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

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 • a special equipment for neutralisation • the sound produced in testing hydrogen • ...

Chemical Reactions 2022-10-12

Chemical Reactions crossword puzzle
Across
  1. Number that tells you the amount of a certain atom in a chemical formula.
  2. Substances that enters a chemical reaction.
  3. Non-flammable gas that is less dense than air.
  4. Substance that is produced from a chemical reaction.
  5. Measurement that tells you how much space matter takes up.
  6. Another word for when mass stays the same.
  7. Property that describes how a substance interacts with fire.
  8. You ... change the subscripts when you balance a chemical equation.
  9. Property that you get when mass is divided by volume.
Down
  1. Chemical reaction that releases heat.
  2. Chemical reaction that absorbs energy from the surroundings.
  3. Gas that makes up 78% of the air around us.
  4. A molecule is made up of at least ... atoms.
  5. Number that tells you the amount of molecules in a chemical formula.
  6. Unit to measure temperature in Germany.
  7. Flammable gas made up of one carbon and four hydrogen atoms.
  8. Flammable gas that you get as a product when you run electricity through water.
  9. Substance that creates carbon dioxide when reacting with water and citric acid.

18 Clues: Chemical reaction that releases heat. • Unit to measure temperature in Germany. • Another word for when mass stays the same. • Substances that enters a chemical reaction. • Gas that makes up 78% of the air around us. • A molecule is made up of at least ... atoms. • Non-flammable gas that is less dense than air. • Substance that is produced from a chemical reaction. • ...

Biomolecules 2024-04-26

Biomolecules crossword puzzle
Across
  1. a substance that changes in a chemical reaction
  2. a substance or material consisting of very large molecules called macromolecules, composed of many repeating subunits
  3. any of a class of organic compounds that are fatty acids or their derivatives and are insoluble in water but soluble in organic solvents. They include many natural oils, waxes, and steroids.
  4. the building blocks of the fat in our bodies and in the food we eat
  5. sugar molecules
  6. the chemical breakdown of a compound due to reaction with water
  7. large biomolecules that play essential roles in all cells and viruses
  8. the minimum quantity of energy which the reacting species must possess in order to undergo a specified reaction
  9. end substances after a biological process has occurred
Down
  1. proteins that help speed up metabolism, or the chemical reactions in our bodies
  2. a molecule of any of a class of compounds, mostly organic, that can react with other molecules to form very large molecules, or polymers
  3. adenine, guanine, cytosine, and thymine
  4. a chemical compound found in living organisms
  5. molecules used by all living things to make proteins
  6. made up of chemical 'building blocks' called amino acids
  7. nonmetallic chemical element in Group 14 of the periodic table.
  8. a sugar derived from ribose by replacing a hydroxyl group with hydrogen.
  9. a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.
  10. a region on an enzyme that binds to a protein or other substance during a reaction.
  11. the surface or material on or from which an organism lives, grows, or obtains its nourishment

20 Clues: sugar molecules • adenine, guanine, cytosine, and thymine • a chemical compound found in living organisms • a substance that changes in a chemical reaction • molecules used by all living things to make proteins • end substances after a biological process has occurred • made up of chemical 'building blocks' called amino acids • ...

Chemical Reactions 2025-02-04

Chemical Reactions crossword puzzle
Across
  1. the chemicals that are on the left side of the arrow in a chemical equation
  2. a liquid solution (aq)
  3. a reaction that has CH + O2 yielding H2O and CO2
  4. the chemicals that are on the right side of the arrow in a chemical equation
  5. a type of reaction that has both elements and compounds and the metals are switched
  6. the number in front of a reactant or product that is multipled
  7. a state of matter where the particles are uniformed and dense
Down
  1. a state of matter where the particles are unorganized but have a definite volume
  2. a solid formed from two liquids, usually in a double replacement reaction
  3. a type of reaction that has only one reactant and gets broken into parts
  4. a type of reaction that has all compounds and the metals are switched
  5. a type of reaction that makes only one product
  6. a state of matter where the particles do not have a definite shape nor volume
  7. a chemical that speeds up the reaction but is not considered a reactant
  8. a formula, or "recipe" for a chemical reaction with the amounts of reactants and products
  9. the symbol that separates the reactants and products in a chemical equation

16 Clues: a liquid solution (aq) • a type of reaction that makes only one product • a reaction that has CH + O2 yielding H2O and CO2 • a state of matter where the particles are uniformed and dense • the number in front of a reactant or product that is multipled • a type of reaction that has all compounds and the metals are switched • ...

CH 1 REVIEW CROSSWORD 2024-08-31

CH 1 REVIEW CROSSWORD crossword puzzle
Across
  1. electron - Electron(s) located in the outermost shell of an atom that is responsible for the formation of chemical bonds
  2. energy is released/ gives off heat
  3. - A subatomic particle of about the same number as a proton, but neutral to an electric charge.
  4. or more atoms connected by chemical bonds,
  5. Two or more mixed up objects that can be unmixed
  6. is the ability to do work and transfer heat
  7. of matter- the form in which matter can be found, which occurs in nature as solid, liquid, gas, or plasma
  8. a substance that undergoes a change in a chemical reaction
  9. how much a substance can dissolve into another
  10. something that helps a chemical reaction occur
  11. mass - weight of the atom. Number of neutrons number of protons (electrons are VERY light in mass)
  12. a chemical reaction such as oxidation that produces heat and usually light
  13. the liquid substance in which a solute dissolves to form a solution
  14. change- a transition from a state of matter to a different state of matter
Down
  1. - A negatively charged subatomic particle found in the electron cloud
  2. reaction-chemical change in which two or more substances form a new substance with different properties
  3. A subatomic particle found in the nucleus of every atom. It has a positive electrical charge
  4. the substance in a solution that dissolves in the solvent
  5. energy is absorbed/ takes in heat
  6. is a substance made up of two or more different chemical elements combined in a fixed ratio.
  7. number- number of protons in an atom
  8. basic particle
  9. cloud (orbital) - A region around an atomic nucleus, defined by a high probability that the atom's electrons will be in that region; Where the electrons are located.
  10. occurs when two different liquid solutions are mixed as reactants.
  11. to make thinner
  12. energy- energy released by a chemical reaction or absorbed during the formation of a chemical compound
  13. to become or cause to become incorporated into a liquid
  14. a substance produced by a chemical reaction, different from the reactants

28 Clues: basic particle • to make thinner • energy is absorbed/ takes in heat • energy is released/ gives off heat • number- number of protons in an atom • or more atoms connected by chemical bonds, • is the ability to do work and transfer heat • how much a substance can dissolve into another • something that helps a chemical reaction occur • ...

Chemistry and Macromolecules Vocabulary 2024-10-21

Chemistry and Macromolecules Vocabulary crossword puzzle
Across
  1. monomer for carbohydrates
  2. the substances at the START of a chemical reaction.
  3. the substances at the END of a chemical reaction.
  4. The 4 macromolecules are carbohydrates, lipids, nucleic acids, and _______.
  5. a macromolecule that stores and uses quick energy.
  6. mean and beans have a lot of ________________.
  7. = a representation of a chemical reaction.
  8. 2 or more elements joined together.
Down
  1. monomer of lipids.
  2. to use later
  3. polymer for carbohydrates
  4. Nucleic acids store genetic code in ________.
  5. the monomer for ____________ is amino acid.
  6. a chain of many, identical, repeating monomers bonded together.
  7. a macromolecule that stores energy for later.
  8. monomer for nucleic acids
  9. a reaction that USES energy to BUILD a larger molecule.
  10. a macromolecule responsible for muscle building and repair.
  11. a reaction that DESTROYS a larger molecule into many smaller molecules and releases energy.
  12. a single (1) molecule

20 Clues: to use later • monomer of lipids. • a single (1) molecule • polymer for carbohydrates • monomer for carbohydrates • monomer for nucleic acids • 2 or more elements joined together. • = a representation of a chemical reaction. • the monomer for ____________ is amino acid. • Nucleic acids store genetic code in ________. • a macromolecule that stores energy for later. • ...

Chemical Reactions - Vocabulary Review 2015-12-13

Chemical Reactions - Vocabulary Review crossword puzzle
Across
  1. The substances that result from a reaction
  2. A reaction which releases energy is called ___________.
  3. The amount of energy required for colliding molecules to break their bonds and react is called the _____________ energy.
  4. A ________ replacement reaction is when a free element replaces one of the elements in a compound
  5. When a complex substance breaks down into two or more simpler substances
  6. If you increase the ______ area of a reactant by grinding it into a powder, it will react faster.
  7. An expression that uses symbols and formulas to represent a chemical reaction
  8. The substances that enter a reaction
  9. The Law of ___________ of Mass states that the mass of the reactants is equal to the mass of products in a chemical reaction.
Down
  1. The number in a chemical equation that describes how many molecules of a reactant there are
  2. A reaction which absorbs energy is called _____________.
  3. When two or more simple substances combine to for a complex substance.
  4. A _________ replacement reaction is when two ionic compounds switch ions with each other.
  5. This factor increases the rate of reaction by increasing the number of molecules in a given volume.
  6. This factor increases the rate of reaction by increasing the kinetic energy of the colliding molecules.
  7. A substance that speeds up the rate of reaction without getting involved in the reaction itself.
  8. _____________ theory/model explains that for molecules to react they need to collide with the correct orientation and sufficient energy.
  9. when substance combine to form new substances this is called a chemical ____________.

18 Clues: The substances that enter a reaction • The substances that result from a reaction • A reaction which releases energy is called ___________. • A reaction which absorbs energy is called _____________. • When two or more simple substances combine to for a complex substance. • When a complex substance breaks down into two or more simpler substances • ...

physical and chemical changes 2024-04-09

physical and chemical changes crossword puzzle
Across
  1. The process by which a solid substance changes into a liquid state as a result of heat.
  2. A chemical reaction between an acid and a base, resulting in the formation of salt and water.
  3. The conversion of a gas or vapor into a liquid state.
  4. A chemical reaction involving the gain of electrons or a decrease in oxidation state by a molecule, atom, or ion.
  5. The process in which a liquid changes into a solid state due to a decrease in temperature.
  6. The formation of a solid from a solution during a chemical reaction.
  7. A change in which the substance's form or appearance alters, but its chemical composition remains constant.
Down
  1. The chemical reaction between an acid and a base, resulting in the formation of water and a salt.
  2. A rapid chemical reaction between a fuel and an oxidant, typically producing heat and light.
  3. A chemical reaction between iron and oxygen in the presence of moisture, leading to the formation of iron oxide (rust).
  4. The transformation of a liquid into a gas at temperatures below its boiling point.
  5. A chemical reaction involving the loss of electrons or an increase in oxidation state by a molecule, atom, or ion.
  6. The process in which a gas transforms into a solid without passing through the liquid phase.
  7. A process that leads to the formation of new substances with different chemical compositions.
  8. The transition of a substance directly from a solid to a gas phase without passing through the intermediate liquid phase.

15 Clues: The conversion of a gas or vapor into a liquid state. • The formation of a solid from a solution during a chemical reaction. • The transformation of a liquid into a gas at temperatures below its boiling point. • The process by which a solid substance changes into a liquid state as a result of heat. • ...

physical and chemical changes 2024-04-09

physical and chemical changes crossword puzzle
Across
  1. The process by which a solid substance changes into a liquid state as a result of heat.
  2. A chemical reaction between an acid and a base, resulting in the formation of salt and water.
  3. The conversion of a gas or vapor into a liquid state.
  4. A chemical reaction involving the gain of electrons or a decrease in oxidation state by a molecule, atom, or ion.
  5. The process in which a liquid changes into a solid state due to a decrease in temperature.
  6. The formation of a solid from a solution during a chemical reaction.
  7. A change in which the substance's form or appearance alters, but its chemical composition remains constant.
Down
  1. The chemical reaction between an acid and a base, resulting in the formation of water and a salt.
  2. A rapid chemical reaction between a fuel and an oxidant, typically producing heat and light.
  3. A chemical reaction between iron and oxygen in the presence of moisture, leading to the formation of iron oxide (rust).
  4. The transformation of a liquid into a gas at temperatures below its boiling point.
  5. A chemical reaction involving the loss of electrons or an increase in oxidation state by a molecule, atom, or ion.
  6. The process in which a gas transforms into a solid without passing through the liquid phase.
  7. A process that leads to the formation of new substances with different chemical compositions.
  8. The transition of a substance directly from a solid to a gas phase without passing through the intermediate liquid phase.

15 Clues: The conversion of a gas or vapor into a liquid state. • The formation of a solid from a solution during a chemical reaction. • The transformation of a liquid into a gas at temperatures below its boiling point. • The process by which a solid substance changes into a liquid state as a result of heat. • ...

physical and chemical changes 2024-04-09

physical and chemical changes crossword puzzle
Across
  1. The process by which a solid substance changes into a liquid state as a result of heat.
  2. A chemical reaction between an acid and a base, resulting in the formation of salt and water.
  3. The conversion of a gas or vapor into a liquid state.
  4. A chemical reaction involving the gain of electrons or a decrease in oxidation state by a molecule, atom, or ion.
  5. The process in which a liquid changes into a solid state due to a decrease in temperature.
  6. The formation of a solid from a solution during a chemical reaction.
  7. A change in which the substance's form or appearance alters, but its chemical composition remains constant.
Down
  1. The chemical reaction between an acid and a base, resulting in the formation of water and a salt.
  2. A rapid chemical reaction between a fuel and an oxidant, typically producing heat and light.
  3. A chemical reaction between iron and oxygen in the presence of moisture, leading to the formation of iron oxide (rust).
  4. The transformation of a liquid into a gas at temperatures below its boiling point.
  5. A chemical reaction involving the loss of electrons or an increase in oxidation state by a molecule, atom, or ion.
  6. The process in which a gas transforms into a solid without passing through the liquid phase.
  7. A process that leads to the formation of new substances with different chemical compositions.
  8. The transition of a substance directly from a solid to a gas phase without passing through the intermediate liquid phase.

15 Clues: The conversion of a gas or vapor into a liquid state. • The formation of a solid from a solution during a chemical reaction. • The transformation of a liquid into a gas at temperatures below its boiling point. • The process by which a solid substance changes into a liquid state as a result of heat. • ...

vocab 2013-01-15

vocab crossword puzzle
Across
  1. the process in which an electric current is used to produce a chemical reaction, such as the decomposition of water.
  2. chemical reaction in which heat is released to the surroundings
  3. a reaction in which one element or radical takes place of another element or radical in a compound.
  4. a substance or molecule that participates in a chemical reaction
  5. The Energy released when a chemical compound reacts to produce new compounds
Down
  1. any chemical change which one species is oxidied and another species is reduced.
  2. a reaction in which a gas, a solid precipitate, or a molecular compound forms from the apparent exchange of atoms or ions between two compounds.
  3. a reaction in which two or more substances combine to form a new compound.
  4. a reaction in which a singl compouned breaks down to more simler substances.
  5. a chemical reaction that requires heat.
  6. the oxodation reaction of an organic compound, in which heat is released.
  7. a substance that forms in a chemical reaction
  8. an organic group that has one or more electrons available for bonding.

13 Clues: a chemical reaction that requires heat. • a substance that forms in a chemical reaction • chemical reaction in which heat is released to the surroundings • a substance or molecule that participates in a chemical reaction • an organic group that has one or more electrons available for bonding. • ...

Vocab unit 4 by Liberty Ramos 2017-02-08

Vocab unit 4 by Liberty Ramos crossword puzzle
Across
  1. Of an object is its speed combined with the direction.
  2. Are the substances formed in a reaction.
  3. SPEED~ Another description of a object's motion it.
  4. OF CONSERVATION OF MASS~ States that matter is neither created nor destroyed in the ordinary physical and chemical change.
  5. REACTION~ Is the process in which atoms are rearranged to produce new substances.
  6. Are the substances that participate in a chemical reaction.
  7. POINT~ Is a place or object to which another location is compared.
  8. Is an object's change in position relative to a reference point.
  9. Is the measure of how quickly distance changes with time.
Down
  1. REACTION~ A chemical reaction that requires an input of energy.
  2. Is the straight-line distance between a starting point.
  3. Is a measure of how quickly velocity changes.
  4. REACTION~ A chemical reaction i which energy is released to the surroundings.
  5. SPEED~ Of a moving object is total total distance traveled divided by the total of travel.
  6. Is the location of a object.
  7. Quantity is a physical quantity that has both size and direction.

16 Clues: Is the location of a object. • Are the substances formed in a reaction. • Is a measure of how quickly velocity changes. • SPEED~ Another description of a object's motion it. • Of an object is its speed combined with the direction. • Is the straight-line distance between a starting point. • Is the measure of how quickly distance changes with time. • ...

Chemical reactions and Equations 2025-04-30

Chemical reactions and Equations crossword puzzle
Across
  1. Reactions in which heat is released along with products
  2. When a metal is attacked by substances around it such as as moisture, acids and etc
  3. _ Bromide Reaction used in black and white photography
  4. Reactions in which energy is absorbed
  5. A chemical equation in which the number of atoms of each element is not equal on both sides.
  6. A reaction in which an atom or set of atoms is displaced by another atom
  7. The new substances formed as a result of a chemical reaction.
  8. added to foods containing fats and oil to prevent oxidation
Down
  1. Substances that undergo chemical change in a reaction
  2. Combining power of an element
  3. Insoluble substance formed is known as
  4. A reaction in which one product is formed from two or more reactatnts
  5. The _ coating on silver is an example of corrsion
  6. The condition produced by the aerial oxidation of fats and oils in foods marked by unpleasant smell and taste.
  7. A substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.
  8. A reaction in which both oxidation and reduction take place simultaneously.

16 Clues: Combining power of an element • Reactions in which energy is absorbed • Insoluble substance formed is known as • The _ coating on silver is an example of corrsion • Substances that undergo chemical change in a reaction • _ Bromide Reaction used in black and white photography • Reactions in which heat is released along with products • ...

Biomolecules 2024-04-26

Biomolecules crossword puzzle
Across
  1. a substance that changes in a chemical reaction
  2. a substance or material consisting of very large molecules called macromolecules, composed of many repeating subunits
  3. any of a class of organic compounds that are fatty acids or their derivatives and are insoluble in water but soluble in organic solvents. They include many natural oils, waxes, and steroids.
  4. the building blocks of the fat in our bodies and in the food we eat
  5. sugar molecules
  6. the chemical breakdown of a compound due to reaction with water
  7. large biomolecules that play essential roles in all cells and viruses
  8. the minimum quantity of energy which the reacting species must possess in order to undergo a specified reaction
  9. end substances after a biological process has occurred
Down
  1. proteins that help speed up metabolism, or the chemical reactions in our bodies
  2. a molecule of any of a class of compounds, mostly organic, that can react with other molecules to form very large molecules, or polymers
  3. adenine, guanine, cytosine, and thymine
  4. a chemical compound found in living organisms
  5. molecules used by all living things to make proteins
  6. made up of chemical 'building blocks' called amino acids
  7. nonmetallic chemical element in Group 14 of the periodic table.
  8. a sugar derived from ribose by replacing a hydroxyl group with hydrogen.
  9. a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.
  10. a region on an enzyme that binds to a protein or other substance during a reaction.
  11. the surface or material on or from which an organism lives, grows, or obtains its nourishment

20 Clues: sugar molecules • adenine, guanine, cytosine, and thymine • a chemical compound found in living organisms • a substance that changes in a chemical reaction • molecules used by all living things to make proteins • end substances after a biological process has occurred • made up of chemical 'building blocks' called amino acids • ...

Cycle 2 Exam Review 2021-11-16

Cycle 2 Exam Review crossword puzzle
Across
  1. The process of a substance undergoing a chemical change
  2. A way to write compounds so we can see how many of each type of atom are present
  3. A positively charged subatomic particle located in the nucleus of an atom
  4. The mass of an atom, which is equal to the total number of protons and neutrons
  5. A chemical bond between a metal and a non-metal in which one atom “gives” an electron and the other “takes” an electron
  6. A negatively-charged subatomic particle located outside of the nucleus
  7. A chemical reaction in which 2 substances combine to produce 1 new substance
  8. A charged atom with an unequal number of protons and electrons
  9. A row on the periodic table
  10. A pure substance composed of the same type of atom throughout
  11. Electrons in the outermost energy level
  12. A column on the periodic table
  13. A chemical bond between nonmetals in which electrons are shared
Down
  1. The area surrounding the nucleus of an atom
  2. The starting substances before the chemical reaction takes place
  3. The substances that exist after a chemical reaction takes place
  4. Smallest unit of matter, consists of a nucleus and electron cloud
  5. A written way to express a chemical reaction
  6. A substance made of 2 or more elements bonded together
  7. The number of protons in one atom
  8. A chemical reaction in which a substance is broken down into 2 or more new substances
  9. The positively charged region in the center of an atom
  10. A neutrally charged subatomic particle located in the nucleus of an atom

23 Clues: A row on the periodic table • A column on the periodic table • The number of protons in one atom • Electrons in the outermost energy level • The area surrounding the nucleus of an atom • A written way to express a chemical reaction • A substance made of 2 or more elements bonded together • The positively charged region in the center of an atom • ...

Biomolecule Crossword 2021-11-17

Biomolecule Crossword crossword puzzle
Across
  1. what comes out of a chemical reaction
  2. monomer of lipid
  3. energy needed to start a chemical reaction
  4. something that speeds a reaction up
  5. biological catalyst
  6. monomer of protein
  7. what enters into a chemical reaction
  8. location on enzyme where substrate is broken down
  9. Another word used for "building block" carbohydrate composed of simple sugars
Down
  1. what is broken down by an enzyme
  2. composed of fatty acids
  3. Term used to describe group of 4 biomolecules
  4. monomer of carbohydrate
  5. monomer of nucleic acid
  6. composed of nucleotide
  7. Large molecule composed of smaller subunits
  8. composed of amino acids

17 Clues: monomer of lipid • monomer of protein • biological catalyst • composed of nucleotide • composed of fatty acids • monomer of carbohydrate • monomer of nucleic acid • composed of amino acids • what is broken down by an enzyme • something that speeds a reaction up • what enters into a chemical reaction • what comes out of a chemical reaction • energy needed to start a chemical reaction • ...

Fun with Chemistry 2022-05-03

Fun with Chemistry crossword puzzle
Across
  1. type of replacement reaction where 2 ions switch places between compounds
  2. unit of measurement for large quantities of small items
  3. reaction where one element replaces another in a compound
  4. reaction involving oxygen that produces energy
  5. another name for an acid-base reaction
  6. substances formed in chemical reactions
  7. numbers used to balance chemical equations
  8. Italian scientist who worked with molecular theory
  9. what the arrow in a chemical equation means
  10. 2 reactants form 1 product
Down
  1. reaction where one element loses electrons and another gains electrons
  2. solid compound that forms when 2 or more aqueous substances react
  3. one reactant breaks down into 2 or more products
  4. numbers after element symbol indicating number of atoms
  5. math for chemistry
  6. quantity of matter in grams
  7. comparison of coefficients
  8. mixed with water
  9. substances that will form products

19 Clues: mixed with water • math for chemistry • comparison of coefficients • 2 reactants form 1 product • quantity of matter in grams • substances that will form products • another name for an acid-base reaction • substances formed in chemical reactions • numbers used to balance chemical equations • what the arrow in a chemical equation means • ...

Unit B-Chemistry Crossword 2015-11-19

Unit B-Chemistry Crossword crossword puzzle
Across
  1. positively charged particle in the nucleus of an atom
  2. substance that reacts with another substance or substances in a chemical reaction to create new substances with different properties
  3. a chemical combination of two or more elements
  4. an experiment in which one or more products of chemical reaction can escape
  5. substance that helps a chemical reaction to be faster
  6. a table in which the elements are organized by their physical and chemical properties
  7. group 1 elements in the periodic table
  8. chemical reaction that absorbs energy
  9. the most reactive non-metal
  10. substance made of only one kind of matter
  11. neutral particle in the nucleus of an atom
  12. a cloudy mixture in which tiny particles of one substance are held within another and particles cannot be separated out from the other substance
  13. compound that dissolves in water to form a soluion
Down
  1. mass of one atom of an element calculated from the number of protons, neutrons and electrons
  2. element that has both metallic and non-metallic properties
  3. pure substance formed when non-metals combine
  4. slow chemical change that occurs when oxygen in the air reacts with metal
  5. catalyst involved in chemical reactions in living things
  6. a system easy to see warning symbols on hazardous materials
  7. change of state from gas to solid
  8. chemical reaction that releases energy
  9. mass of a substance that can dissolve in a given amount of solvent to form a saturated solution at a given temperature
  10. the most stable and unreactive elements
  11. horizontal row of elements in the periodic table
  12. atom that has become electrically charged because it has lost or gained electrons

25 Clues: the most reactive non-metal • change of state from gas to solid • chemical reaction that absorbs energy • group 1 elements in the periodic table • chemical reaction that releases energy • the most stable and unreactive elements • substance made of only one kind of matter • neutral particle in the nucleus of an atom • pure substance formed when non-metals combine • ...

chemistry crossword 2015-11-17

chemistry crossword crossword puzzle
Across
  1. They are used to describe matter, like colour or conductivity
  2. Substance that reacts with another substance in a chemical reaction to create new substances with different propeties
  3. A table in which elements are organized by their physical and chemical properties
  4. Number of protons in the nucleus of one atom of an element
  5. States that mass cannot be created or destroyed
  6. Chemical reaction that absorbs energy
  7. Pure substance formed when at least one metal and one non-metal combine
  8. A positively charged particle
  9. Slow chemical change that occurs when oxygen in the air reacts with a metal
  10. Occurs when a material changes from one state o another
  11. Matter which has a specific composition and specific properties / every pure element
  12. Horizontal row of elements in the periodic table
Down
  1. Chemical reaction that releases energy
  2. Vertical column of elements in the periodic table
  3. Pure substance formed when non-metals combine
  4. New substance produced in a chemical reaction between reactants
  5. Mass of one atom of an element
  6. Pure substance that cannot be broken down into other substances
  7. Anything that has mass and takes up space
  8. The most reactive non-metals
  9. Occurs when two or more materials react and create new materials
  10. Elements that have both metallic and non-metallic properties
  11. A system of easy-to-use warning symbols on hazardous materials
  12. Chemical reaction that occurs when oxygen reacts with a substance to form a new energy and give off energy

24 Clues: The most reactive non-metals • A positively charged particle • Mass of one atom of an element • Chemical reaction that absorbs energy • Chemical reaction that releases energy • Anything that has mass and takes up space • Pure substance formed when non-metals combine • States that mass cannot be created or destroyed • Horizontal row of elements in the periodic table • ...

Crossword 2024-08-27

Crossword crossword puzzle
Across
  1. Negatively charged formed by gaining electrons
  2. A chemical reaction with absorption of heat energy
  3. Fusion The Energy released by fusing nuclei of every light element under extremely high temperature and pressure
  4. Mixture with various constituents without getting mixed uniformly
  5. Fission The process obtaining nuclear energy by splitting the nucleus by slowly moving electrons
  6. positively charged ions formed by losing 1,2 or 3 electrons
  7. The path in which electrons revolve around the nucleus in fixed path
  8. A negatively charged subatomic particle that orbits the nucleus of an atom.
  9. An electrically charged particle formed by the loss or gain of electrons
  10. the atom of same element having same atomic no. but different mass no.s
  11. A chemical reaction with release of heat energy
Down
  1. A subatomic particle that has no electric charge, present in the nucleus of an atom and has mass equal to an hydrogen atom
  2. A group of atoms having some electric charge which can retain its identity in series of chemical reaction
  3. New substance formed as a result of chemical reaction
  4. A substance formed by mixing two substances
  5. Mixture with different constituents mixed uniformly
  6. A positively charged subatomic present in the nucleus and has mass equal to an atom of hydrogen
  7. The substance/substances taking part in chemical reaction
  8. A pure substance composed of two or more elements combined chemically in a fixed proportion and can be separated by chemical means only
  9. Represents short form of an element
  10. A pure substance which cannot be broken into two or more substances by any physical and chemical means

21 Clues: Represents short form of an element • A substance formed by mixing two substances • Negatively charged formed by gaining electrons • A chemical reaction with release of heat energy • A chemical reaction with absorption of heat energy • Mixture with different constituents mixed uniformly • New substance formed as a result of chemical reaction • ...

Science Key words 2015-12-05

Science Key words crossword puzzle
Across
  1. electricity that flows continuously
  2. description of a substance that can be pounded or rolled into sheets
  3. an experiment in which one or more products of a chemical reaction can escape
  4. ability of a substance to conduct electricity or heat
  5. a group of 17 elements on the periodic table
  6. chemical reaction that occurs when oxygen reacts with a substance to form a new substance and give off energy
  7. element that has both metallic and non-metallic properties
  8. slow chemical change that occurs when oxygen in the air reacts with a metal
  9. chemical combination of two or more elements in a specific ratio
  10. change of state from a gas to a solid
  11. new materials created by a reaction
Down
  1. substance that helps a chemical reaction to proceed more quickly
  2. a table in which the elements are organized by their physical and chemical properties
  3. change in appearance or state of a substance
  4. group 18 elements in the periodic table
  5. when two or more substances react to create a new substance
  6. invisible negatively charged particle
  7. amount of mass in a given volume of a substance
  8. the smallest part of an element
  9. an experiment in which all reactants and all products of a chemical reaction are accounted for
  10. a substance that resists the flow of energy
  11. a material that electric charge can move through easily
  12. positive particle in the nucleus of an atom
  13. new substance produced in a chemical reaction between reactants
  14. neutral particle in the nucleus of an atom
  15. positively charged centre of an atom

26 Clues: the smallest part of an element • electricity that flows continuously • new materials created by a reaction • positively charged centre of an atom • invisible negatively charged particle • change of state from a gas to a solid • group 18 elements in the periodic table • neutral particle in the nucleus of an atom • a substance that resists the flow of energy • ...

ch. 7 vocab 2024-01-02

ch. 7 vocab crossword puzzle
Across
  1. can be represented by A + B → AB
  2. any chemical reaction that absorbs heat from its environment
  3. chemical reaction that involves a transfer of electrons between two species
  4. substance that is formed due to chemical reaction
Down
  1. symbolic representation of chemical reactions
  2. chemical reaction between substances, usually including oxygen
  3. substance that is altered during chemical reactions
  4. one element is replaced by another in a compound
  5. when a binary compound decomposes into its elements
  6. 6.02214076 × 1023 of some chemical unit
  7. stored in the bonds of chemical compounds
  8. releases energy by light or heat
  9. a multiplier or factor that measures some property
  10. positive and negative ions of two ionic compounds exchange places to form two new compounds
  11. the ratio between the mass and the amount of substance (measured in moles) of any sample

15 Clues: can be represented by A + B → AB • releases energy by light or heat • 6.02214076 × 1023 of some chemical unit • stored in the bonds of chemical compounds • symbolic representation of chemical reactions • one element is replaced by another in a compound • substance that is formed due to chemical reaction • a multiplier or factor that measures some property • ...

Stoichiometry Review 2024-04-01

Stoichiometry Review crossword puzzle
Across
  1. unit of measurement that has 6.022 x 10^23 atoms.
  2. Numbers written to the right and slightly below an element's symbol in a chemical formula, indicating the number of atoms in a molecule.
  3. Numbers used to balance a chemical equation, representing the relative amounts of reactants and products.
  4. Process where reactants undergo chemical change to form products.
  5. Ratio the masses of any two substances involved in a chemical reaction.
  6. The number of atoms, molecules, or entities in one mole of a substance.
  7. The branch of chemistry that studies calculations of quantities of chemical reactions
Down
  1. Equation that the product and reactant sides have equal amounts of atoms.
  2. Reactant that can do more product than the limiting one, therefore will have left overs after reaction.
  3. The substances that come out of the reactants.
  4. Reactant that reactant that determines the amount of product formed in a chemical reaction.
  5. The substances that change to create the products
  6. Molar mass is the mass of one mole of a substance.
  7. Symbolic representation of a chemical reaction showing reactants and products and their respective quantities.
  8. Ratio of the amounts in moles of any two substances involved in a chemical reaction.

15 Clues: The substances that come out of the reactants. • unit of measurement that has 6.022 x 10^23 atoms. • The substances that change to create the products • Molar mass is the mass of one mole of a substance. • Process where reactants undergo chemical change to form products. • Ratio the masses of any two substances involved in a chemical reaction. • ...

Ch. 4 Compounds, Elements, and Mixtures 2019-10-14

Ch. 4 Compounds, Elements, and Mixtures crossword puzzle
Across
  1. The substance that is dissolved.
  2. Two or more elements chemically combined.
  3. Homogeneous mixtures that have particles mixed together but are not dissolved.
  4. First letter of a chemical symbol is always _________.
  5. During a chemical reaction, atoms cannot be created or _________.
  6. Type of homogeneous mixture formed when one substance dissolves in another.
  7. Atoms of different elements are _________.
  8. The substances that make up a mixture can be present in any ___________.
  9. Shorthand way of representing the elements.
  10. Universal solvent
  11. Simplest pure substance.
  12. Mixtures that are "well mixed".
  13. Shortand way of representing compounds.
  14. Mixtures that are "lease mixed".
  15. Metal solution
Down
  1. A substance that dissolved in another substances is said to be ____________.
  2. Each substance that make up a mixture has its own specific ______________ and is the same throughout.
  3. The reactants and products must have the same ________ of atoms.
  4. Substances mixed together but not chemically combined.
  5. To balance a chemical reaction, you must add ___________ in from of the chemical formulas.
  6. What results from the reaction in a chemical equation.
  7. The amount of solute that can be completely dissolved in a given amount of solvent at a specific temperature.
  8. Shorthand way of representing a chemical reaction.
  9. Classifying matter according to ________ often groups very different substances together.
  10. The substance doing the dissolving.
  11. Atoms of the same element are ________.
  12. Substances in a mixture may change in _____________ appearance.
  13. What is being put into a reaction in a chemical equation.

28 Clues: Metal solution • Universal solvent • Simplest pure substance. • Mixtures that are "well mixed". • The substance that is dissolved. • Mixtures that are "lease mixed". • The substance doing the dissolving. • Atoms of the same element are ________. • Shortand way of representing compounds. • Two or more elements chemically combined. • Atoms of different elements are _________. • ...

Biology Chapter 2 2023-08-30

Biology Chapter 2 crossword puzzle
Across
  1. substance that changes rate of chemical reaction but isn't used up
  2. substance present before a chemical reaction
  3. smallest particle of a covalently bonded compound
  4. drives the physical and chemical processes necessary for life
  5. slows a chemical reaction by binding to enzymes
  6. attraction between particles of different substances
  7. change that does not change the identity of a substance
  8. organic compound that is a source of energy and structure
  9. molecules with uneven electrical charge
  10. covalently bonded compound containing carbon
  11. pure substance made of only one kind of atom
  12. substance formed during a chemical reaction
  13. organic compound that provides building blocks for proteins
  14. pure substance made or two or more elements chemically combined
  15. substance that can produce hydrogen ions (H+)in solution
Down
  1. organic compound that provides building blocks for DNA and RNA
  2. change that results in new substances being formed
  3. average speed of the particles in a substance
  4. physical stuff that makes up the universe
  5. naturally occurring catalyst, usually a protein, that assists a chemical reaction
  6. tendency of energy to disperse or spread out
  7. particles in solution evenly distributed by Brownian motion
  8. nonpolar organic compound providing energy storage and cell membrane
  9. substance that can produce hydroxide ions (OH-) in solution
  10. organic compound that includes sugars, starch and cellulose
  11. attraction between molecules in polar substances
  12. smallest particle of an element
  13. attraction between atoms by transferring or sharing electrons

28 Clues: smallest particle of an element • molecules with uneven electrical charge • physical stuff that makes up the universe • substance formed during a chemical reaction • substance present before a chemical reaction • tendency of energy to disperse or spread out • covalently bonded compound containing carbon • pure substance made of only one kind of atom • ...

Law of Conservation of Mass 2024-10-15

Law of Conservation of Mass crossword puzzle
Across
  1. A rule in science that is always true
  2. The number at the bottom right hand of the symbol that shows the number of atoms of that element
  3. the chemical process by which atoms are rearranged to produce new substances
  4. The unit of measure for mass in the metric system
  5. The name given to the substances formed in a chemical reaction, on the right side of the arrow
  6. The name given to the arrow in a chemical reaction
  7. if a chemical reaction has 10 g of a compound to start with how many grams does it need to end with to follow the law conservation of mass?
Down
  1. Anything that has mass and takes up space
  2. The amount of matter in an object
  3. When determining the total number of atoms, if there’s a coefficient and a subscript, what do you do to them?
  4. the combination of chemical symbols and numbers that represent matter
  5. original substances or atoms on the left-hand side of the arrow
  6. The same number of atoms are present ______ and after the chemical reaction
  7. On the reactant side, there is 2 g of a compound and on the product side there is 8 g of total product. How many grams are missing from the reactant side?
  8. Both sides of the equation must end with the _______ number of atoms
  9. The number placed in front of the chemical formula to show the number of molecules
  10. ______ substances in a chemical reaction must be made of the same number of atoms the reaction started with

17 Clues: The amount of matter in an object • A rule in science that is always true • Anything that has mass and takes up space • The unit of measure for mass in the metric system • The name given to the arrow in a chemical reaction • original substances or atoms on the left-hand side of the arrow • Both sides of the equation must end with the _______ number of atoms • ...

Unit 2 Vocab. 2022-11-16

Unit 2 Vocab. crossword puzzle
Across
  1. reaction that absorbs energy
  2. a group of two more atoms held together by a chemical bond
  3. substance formed as a result of a chemical reaction
  4. shows the number and types of atoms present in a molecule
  5. an arrangement of the elements
  6. shows the reactants and the products, separated by an arrow
  7. created or manufactured by humans
  8. substance(s) that enter into a chemical reaction
Down
  1. anything naturally occurring in the environment that humans use
  2. one or two letter abbreviation of an element
  3. reaction that releases energy, usually in the form of heat
  4. one or more substances combine or break down to form new substances
  5. number of protons in the nucleus of an atom
  6. matter is not created or destroyed in any chemical reaction
  7. substance made of only one type of atom
  8. small sized number representing the number of atoms of that element
  9. a substance made of two or more elements
  10. positively charged center of an atom
  11. alters the form/appearance of matter
  12. basic unit of matter

20 Clues: basic unit of matter • reaction that absorbs energy • an arrangement of the elements • created or manufactured by humans • positively charged center of an atom • alters the form/appearance of matter • substance made of only one type of atom • a substance made of two or more elements • number of protons in the nucleus of an atom • one or two letter abbreviation of an element • ...

Vocab 2023-11-03

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

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

Chemistry Bonus 2026-04-23

Chemistry Bonus crossword puzzle
Across
  1. the number of moles of solute dissolved in one liter of solution
  2. chemical bond between oppositely charged ions
  3. the species produced when a base accepts a hydrogen ion from an acid
  4. a state of balance where opposing chemical reactions or forces occur at the same exact rate
  5. minimum energy required to start chemical reaction
  6. releasing energy
  7. measure of the hydrogen ion concentration in a substance
  8. negatively charged subatomic particle
  9. number of electrons in an atoms outer shell
  10. substance that participates in a reaction and undergoes a chemical change
  11. substance formed as a result of a chemical reaction
  12. gaining energy
  13. a change in matter in which new materials with new chemical and physical properties are formed
Down
  1. measure of moles of solute per kilogram of solvent
  2. the species that results when an acid donates a hydrogen ion to a base
  3. positively charged subatomic particle
  4. table with chemical elements
  5. physical combination of two or more substances that are not chemically bonded
  6. chemical bond formed when electrons are shared by atoms
  7. homogeneous mixture of two or more substances

20 Clues: gaining energy • releasing energy • table with chemical elements • positively charged subatomic particle • negatively charged subatomic particle • number of electrons in an atoms outer shell • chemical bond between oppositely charged ions • homogeneous mixture of two or more substances • measure of moles of solute per kilogram of solvent • ...

Chemical Reactions 2013-03-06

Chemical Reactions crossword puzzle
Across
  1. Number in front of a molecule to show how many of that molecule are present in a chemical reaction.
  2. Type of bond in which electrons are transferred from one atom to another.
  3. State of matter in which the molecules are spread the furthest apart.
  4. Type of chemical reaction in which one compound breaks up into two or more elements or compounds.
  5. Type of chemical reaction in which two atoms replace each other in two compounds
  6. An atom with a positive or negative charge.
  7. A negatively-charged atom.
  8. A positively-charged atom.
  9. Type of bond in which atoms share electrons.
Down
  1. Negatively charged subatomic particle.
  2. The rearrangement of atoms to form new compounds.
  3. Type of chemical reaction in which one atom replaces another in a compound.
  4. Positively charged subatomic particle.
  5. Displays the chemical elements and is organized based on atomic numbers and electron configuration.
  6. The smallest particle of matter that keeps the same properties of that element.
  7. Type of chemical reaction in which two elements come together to form one compound.
  8. State of matter in which the molecules are very tightly packed together.
  9. The electrons that are in the outermost shell in an atom.

18 Clues: A negatively-charged atom. • A positively-charged atom. • Negatively charged subatomic particle. • Positively charged subatomic particle. • An atom with a positive or negative charge. • Type of bond in which atoms share electrons. • The rearrangement of atoms to form new compounds. • The electrons that are in the outermost shell in an atom. • ...

Law of Conservation of Mass and Reactions 2025-02-26

Law of Conservation of Mass and Reactions crossword puzzle
Across
  1. Type of reaction where a single reactant breaks down into two or more simpler products.
  2. A symbolic representation of a chemical reaction using formulas and symbols.
  3. Type of reaction where one element replaces another in a compound.
  4. A small number written below an element symbol indicating the number of atoms in a molecule (e.g., the "₂" in H₂O).
  5. A number placed in front of a chemical formula to balance the equation.
  6. A chemical equation that shows the formulas of reactants and products but is not balanced.
  7. Type of reaction where two or more reactants combine to form a single product.
Down
  1. The starting substances in a chemical reaction, found on the left side of the equation.
  2. Type of reaction where two compounds exchange elements to form two new compounds.
  3. The substances formed in a chemical reaction, found on the right side of the equation.
  4. A chemical equation where the number of atoms of each element is the same on both sides, ensuring the law of conservation of mass is followed.
  5. Type of reaction where a substance (usually a hydrocarbon) reacts with oxygen to produce carbon dioxide and water.
  6. A representation of a substance using chemical symbols and numbers (e.g., H₂O, CO₂).
  7. The one or two-letter abbreviation for an element (e.g., H for hydrogen, O for oxygen).

14 Clues: Type of reaction where one element replaces another in a compound. • A number placed in front of a chemical formula to balance the equation. • A symbolic representation of a chemical reaction using formulas and symbols. • Type of reaction where two or more reactants combine to form a single product. • ...

Chemical Reactions 2022-03-18

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

26 Clues: A reaction in which energy is absorbed • 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 similar products • The amount of a substance in a given volume • When matter is not allowed to enter or leave • A material that releases energy when it burns • ...

Types of Reactions 2024-05-05

Types of Reactions crossword puzzle
Across
  1. Substance that speeds up a reaction
  2. Release of heat
  3. Exchange of ions
  4. Gradual deterioration of materials
  5. Substance that changes in a reaction
  6. Multiple reactants and a single product
  7. Synonym of Combination reaction
  8. Addition of oxygen
Down
  1. Provide unpleasant odour to foods
  2. Symbolic representation of a chemical reaction
  3. An element of a compound is replaced by another element
  4. Removal of oxygen
  5. New material formed in a reaction
  6. Chemical reaction expressed in words
  7. Single reactant and multiple products
  8. Absorption of heat

16 Clues: Release of heat • Exchange of ions • Removal of oxygen • Absorption of heat • Addition of oxygen • Synonym of Combination reaction • Provide unpleasant odour to foods • New material formed in a reaction • Gradual deterioration of materials • Substance that speeds up a reaction • Chemical reaction expressed in words • Substance that changes in a reaction • ...

chemistry vocab 2025-05-01

chemistry vocab crossword puzzle
Across
  1. amount of matter
  2. change effecting the form
  3. space/amount of something in an object
  4. result of chemical reaction
  5. action sticking together
  6. study with chemicals
  7. has mass and volume edothermic absorption of heat
  8. connected by chemical bonds
  9. energy released heat
  10. one or more substances
  11. small basic block
Down
  1. average amount of energy motion
  2. observed without change
  3. physical blend of multiple substances
  4. property property of a substance
  5. increase rate of reaction
  6. two or more elements chemically combined
  7. substance that converts into something new
  8. capacity to cause change
  9. temperature
  10. the force that holds atoms together

21 Clues: temperature • amount of matter • small basic block • study with chemicals • energy released heat • one or more substances • observed without change • action sticking together • capacity to cause change • change effecting the form • increase rate of reaction • result of chemical reaction • connected by chemical bonds • average amount of energy motion • property property of a substance • ...

Physical & Chemical Changes Crossword Puzzle 2026-01-29

Physical & Chemical Changes Crossword Puzzle crossword puzzle
Across
  1. A change where no new substance is formed.
  2. Cutting wood into pieces.
  3. Butter changing from solid to liquid.
  4. A word meaning a change in matter.
  5. Light produced in a reaction.
  6. Wood turning into ash.
  7. Bending an object.
  8. Water changing into ice.
  9. Breaking glass.
  10. Heat released during a reaction.
Down
  1. A sign of chemical change when gas appears.
  2. Food changing when cooked.
  3. Ice changing into water.
  4. A change that makes a new substance.
  5. A sign of chemical change when color changes.
  6. Cutting paper into pieces.
  7. Pulling paper apart.
  8. Metal reacting with oxygen.
  9. Mixing vinegar and baking soda.
  10. Flattening a soda can.

20 Clues: Breaking glass. • Bending an object. • Pulling paper apart. • Wood turning into ash. • Flattening a soda can. • Ice changing into water. • Water changing into ice. • Cutting wood into pieces. • Food changing when cooked. • Cutting paper into pieces. • Metal reacting with oxygen. • Light produced in a reaction. • Mixing vinegar and baking soda. • Heat released during a reaction. • ...

Chemical Reactions 2021-11-20

Chemical Reactions crossword puzzle
Across
  1. When an acid and base react quantitatively with each other.
  2. A solution with a large volume of acid
  3. A unit of measuring the acidity of a substance.
  4. An acid that is dilute.
  5. Something that will show whether a substance is acidic or basic.
  6. A ratio of hydrogen and carbon atoms such as alkanes, methane a propane. When burnt in a limited amount of air, carbon monoxide is produced rather than carbon dioxide.
  7. The substances that undergo a change in chemical reactions.
  8. A natural process that converts a refined metal into a more chemically stable form such as oxide, hydroxide, carbonate or sulfide. It is the gradual destruction of materials by chemical and/or electrochemical reaction with their environment.
  9. A common indicator
  10. A type of acid that will not easily give way hydrogen ions
  11. A reaction that emits excess energy in the form of heat, light or electricity. Heat packs, match burning and rusting are examples of this chemical reaction.
  12. dioxide The product of hydrocarbons burning in unlimited air, a compound of carbon and oxygen.
  13. A product of base and acid reactions and acid and metal reactions.
Down
  1. A material that can not be replaced naturally in rate of it being used.
  2. A reaction when things burn, it is a chemical reaction when a flame reacts with oxygen to produce a large amount of heat rapidly.
  3. A natural indicator
  4. An indicator
  5. The result of a chemical reaction.
  6. A type of acid that wants to give away its hydrogen ions.
  7. A substance that is used to create heat.
  8. A substance that gives away hydrogen ions, has a pH lower than 7, conducts electricity when mixed with water, neutralizes bases, has a sour taste and react with many bases.
  9. A reaction that absorbs heat, the reactants are cold. Ice packs and photosynthesis are examples of this chemical reaction.
  10. A base
  11. The process of an electron being removed from a molecule during a chemical reaction.
  12. A slow exothermic reaction where the electrons of a metal is removed from the molecule due to be exposed to water and oxygen.
  13. An acid with a ph of 3
  14. The process in which a material is able to be sustainably replaced and used.
  15. A highly volatile and flammable substance.
  16. A substance that is the chemical opposite of acids, has a slippery soapy feel, tastes bitter, higher pH than 7, when dissolved in water they are called alkanes and neutralize acids.
  17. A natural indicator

30 Clues: A base • An indicator • A common indicator • A natural indicator • A natural indicator • An acid with a ph of 3 • An acid that is dilute. • The result of a chemical reaction. • A solution with a large volume of acid • A substance that is used to create heat. • A highly volatile and flammable substance. • A unit of measuring the acidity of a substance. • ...

Chapter 7 Vocab 2024-01-02

Chapter 7 Vocab crossword puzzle
Across
  1. a reaction in which a compound breaks down into two or more simpler substances
  2. a reaction in which one element is substituted for another element in a compound
  3. a reaction in which energy is released in the form of light or heat
  4. the species formed from chemical reactions
  5. the symbolic representation of a chemical reaction in the form of symbols and chemical formulas
  6. the unit of measurement in the International System of Units (SI) for amount of substance
Down
  1. a chemical reaction in which a fuel undergoes oxidation by reacting with an oxidising agent, resulting in the release of energy
  2. any chemical reaction in which the oxidation number of a molecule, atom, or ion changes by gaining or losing an electron
  3. a chemical process in which two or more simple elements or compounds combine to form a more complex product
  4. occur when parts of two ionic compounds are exchanged, making two new compounds
  5. chemical reactions in which the reactants absorb heat energy from the surroundings to form products
  6. a substance that takes part in and undergoes change during a reaction
  7. the energy which is stored in the bonds of chemical compounds
  8. the mass of a chemical compound divided by its amount-of-substance measured in moles
  9. a number that is constant for a given substance, body, or process under certain specified conditions

15 Clues: the species formed from chemical reactions • the energy which is stored in the bonds of chemical compounds • a reaction in which energy is released in the form of light or heat • a substance that takes part in and undergoes change during a reaction • a reaction in which a compound breaks down into two or more simpler substances • ...

Chemical Reactions Vocab Review #1 2023-12-05

Chemical Reactions Vocab Review #1 crossword puzzle
Across
  1. Made in chemical reactions
  2. Indicates how many atoms
  3. Shorthand way of writing a chemical reaction
  4. Used in chemical reactions like ingredients
  5. Mixture description where water is the solvent
  6. Energy released in reaction during this process
  7. Indicates how many molecules
  8. Needed to start reactions
Down
  1. Process that causes chemical change
  2. Matter is neither created or destroyed but is transformed.
  3. Change type example melting ice
  4. When 2 liquids are mixed and a solid forms
  5. Energy taken in to do this in the reaction
  6. Change type example rotting fruit
  7. Fancy word for gas production or bubbling
  8. Statement or mathematical equation that describes or predicts a natural phenomenon
  9. What we can see observe or measure
  10. You tell the doctor how you feel

18 Clues: Indicates how many atoms • Needed to start reactions • Made in chemical reactions • Indicates how many molecules • Change type example melting ice • You tell the doctor how you feel • Change type example rotting fruit • What we can see observe or measure • Process that causes chemical change • Fancy word for gas production or bubbling • ...

Chemical Bonding Vocab Crossword 2024-09-10

Chemical Bonding Vocab Crossword crossword puzzle
Across
  1. type of chemical in which two or more simple substances combine to form a more complex substance.
  2. a chemical change that results in the rearrangement of atoms forming products with new properties.
  3. a chemical reaction accompanied by the absorption of heat.
  4. a rule stating that atoms lose, gain, or share electrons in order to have 8 valence electrons.
  5. a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.
  6. acronym of International Union of Pure and Applied Chemistry. An organization that establishes official names of chemical elements and compounds.
  7. a substance that is the result of a chemical change and is written on the right side of the arrow in a chemical equation.
  8. a positively charged ion due to the loss of 1 or more electrons.
  9. type of covalent bond in which the electrons are not being shared equally. This results in one end of the molecule having a slightly negative charge and the other a slightly positive charge.
  10. type of covalent bond in which the electrons are being shared equally.
  11. a way to describe what goes on in a chemical reaction, the actual change in a material.
Down
  1. a law stating that matter is neither created nor destroyed. In a chemical reaction, the same number of atoms occurs in the products as in the original reactants.
  2. type of chemical reaction in which a compound and oxygen is combined to produce heat and new product.
  3. a type of chemical reaction in which a single uncombined element replaces another in a compound.
  4. a covalently bonded group of atoms that usually forms ionic bonds with other atoms.
  5. a chemical reaction that releases energy in the form of light or heat.
  6. a type of chemical reaction in which a more complex substance breaks down into its more simple parts.
  7. numerical charge of an ion that indicates the number of electrons lost, gained, or shared.
  8. an electrically charged atom due to losing or gaining 1 or more electrons.
  9. an electron located in the outermost shell (valence shell) of the atom, that can be transferred to or shared with another atom.
  10. a substance that undergoes a chemical change and is written on the left side of the arrow in a chemical equation.
  11. a region that forms when valence electrons from different atoms interact with each other.
  12. bond formed by the sharing of electrons. Occurs between two nonmetals.
  13. written above the line to indicate the charge (oxidation number) of the ion.
  14. the number placed in front of molecules in a chemical equation that represent the number of molecules.
  15. bond formed by the transferring of electrons. Occurs between a metal (loses electrons) and a nonmetal (gains electrons).
  16. written below the line to indicate the number of atoms.
  17. a word added in the front of another word. Prefixes are used in naming covalent compounds.
  18. a negatively charged ion due to gaining 1 or more electrons.

29 Clues: written below the line to indicate the number of atoms. • a chemical reaction accompanied by the absorption of heat. • a negatively charged ion due to gaining 1 or more electrons. • a positively charged ion due to the loss of 1 or more electrons. • a chemical reaction that releases energy in the form of light or heat. • ...

physical and chemical changes 2024-04-09

physical and chemical changes crossword puzzle
Across
  1. The process by which a solid substance changes into a liquid state as a result of heat.
  2. A chemical reaction between an acid and a base, resulting in the formation of salt and water.
  3. The conversion of a gas or vapor into a liquid state.
  4. A chemical reaction involving the gain of electrons or a decrease in oxidation state by a molecule, atom, or ion.
  5. The process in which a liquid changes into a solid state due to a decrease in temperature.
  6. The formation of a solid from a solution during a chemical reaction.
  7. A change in which the substance's form or appearance alters, but its chemical composition remains constant.
Down
  1. The chemical reaction between an acid and a base, resulting in the formation of water and a salt.
  2. A rapid chemical reaction between a fuel and an oxidant, typically producing heat and light.
  3. A chemical reaction between iron and oxygen in the presence of moisture, leading to the formation of iron oxide (rust).
  4. The transformation of a liquid into a gas at temperatures below its boiling point.
  5. A chemical reaction involving the loss of electrons or an increase in oxidation state by a molecule, atom, or ion.
  6. The process in which a gas transforms into a solid without passing through the liquid phase.
  7. A process that leads to the formation of new substances with different chemical compositions.
  8. The transition of a substance directly from a solid to a gas phase without passing through the intermediate liquid phase.

15 Clues: The conversion of a gas or vapor into a liquid state. • The formation of a solid from a solution during a chemical reaction. • The transformation of a liquid into a gas at temperatures below its boiling point. • The process by which a solid substance changes into a liquid state as a result of heat. • ...

physical and chemical changes 2024-04-09

physical and chemical changes crossword puzzle
Across
  1. The process by which a solid substance changes into a liquid state as a result of heat.
  2. A chemical reaction between an acid and a base, resulting in the formation of salt and water.
  3. The conversion of a gas or vapor into a liquid state.
  4. A chemical reaction involving the gain of electrons or a decrease in oxidation state by a molecule, atom, or ion.
  5. The process in which a liquid changes into a solid state due to a decrease in temperature.
  6. The formation of a solid from a solution during a chemical reaction.
  7. A change in which the substance's form or appearance alters, but its chemical composition remains constant.
Down
  1. The chemical reaction between an acid and a base, resulting in the formation of water and a salt.
  2. A rapid chemical reaction between a fuel and an oxidant, typically producing heat and light.
  3. A chemical reaction between iron and oxygen in the presence of moisture, leading to the formation of iron oxide (rust).
  4. The transformation of a liquid into a gas at temperatures below its boiling point.
  5. A chemical reaction involving the loss of electrons or an increase in oxidation state by a molecule, atom, or ion.
  6. The process in which a gas transforms into a solid without passing through the liquid phase.
  7. A process that leads to the formation of new substances with different chemical compositions.
  8. The transition of a substance directly from a solid to a gas phase without passing through the intermediate liquid phase.

15 Clues: The conversion of a gas or vapor into a liquid state. • The formation of a solid from a solution during a chemical reaction. • The transformation of a liquid into a gas at temperatures below its boiling point. • The process by which a solid substance changes into a liquid state as a result of heat. • ...

Chemical reactions and equations word search BY EMAD 2025-04-28

Chemical reactions and equations word search BY EMAD crossword puzzle
Across
  1. The capacity to do work or produce heat in chemical reactions.
  2. A group of two or more atoms chemically bonded together.
  3. A representation of a chemical reaction using symbols and formulae.
  4. A reaction where simpler substances combine to form a complex compound.
  5. A measure of the heat involved in a chemical reaction.
  6. Formation of an insoluble solid from two solutions.
  7. A chemical reaction that produces heat and light, usually with a flame.
  8. A change where a new substance is formed with different properties.
  9. A substance that changes the speed of a chemical reaction without being used up.
  10. The smallest unit of an element that retains its properties.
Down
  1. A pure substance made of only one kind of atom.
  2. A chemical reaction that requires energy input to proceed.
  3. The breakdown of a single compound into simpler substances.
  4. Formation of reddish-brown substance on iron due to moisture.
  5. The breakdown of a compound using an electric current.

15 Clues: A pure substance made of only one kind of atom. • Formation of an insoluble solid from two solutions. • The breakdown of a compound using an electric current. • A measure of the heat involved in a chemical reaction. • A group of two or more atoms chemically bonded together. • A chemical reaction that requires energy input to proceed. • ...

Chemical and physical properties 2024-03-14

Chemical and physical properties crossword puzzle
Across
  1. A substance produced in a chemical reaction
  2. A characteristic of a pure substance that can be observed without changing it into another substance
  3. the force that holds two atoms together
  4. A representation of a chemical reaction that uses symbols to show the relationship between the reactants and the products
  5. A change in matter that produces one or more new substances
  6. A reaction that releases energy in the form of heat
  7. A reaction in which energy is absorbed
  8. Characteristic that cannot be observed without altering the substance
Down
  1. Matter is not created nor destroyed in any chemical or physical change
  2. the process by which one or more substances change to produce one or more different substances
  3. A change in a substance that does not involve a change in the identity of the substance
  4. A group of atoms bonded together
  5. A chemical substance that is present at the start of a chemical reaction
  6. A solid that forms from a solution during a chemical reaction.
  7. number in front of a variable

15 Clues: number in front of a variable • A group of atoms bonded together • A reaction in which energy is absorbed • the force that holds two atoms together • A substance produced in a chemical reaction • A reaction that releases energy in the form of heat • A change in matter that produces one or more new substances • ...

Chemical Reaction Crossword 2022-05-08

Chemical Reaction Crossword crossword puzzle
Across
  1. Reaction that gives out energy in the form of heat
  2. Substance that speeds up a reaction without being consumed
  3. Reaction between an acid and base forming water and salts
  4. Reaction in which one element replaces another within a compound
  5. Chemical link that holds molecules together
  6. Reaction that takes in energy in the form of heat
  7. Gain of oxygen by a substance during a chemical reaction
Down
  1. Energy is the energy needed to start a reaction
  2. Factor affecting the rate of reactions
  3. Substance that participates in a chemical reaction
  4. Chemical reaction in which a single compound breaks down into two or more elements or compounds
  5. Solid that forms a solution during a chemical reaction

12 Clues: Factor affecting the rate of reactions • Chemical link that holds molecules together • Energy is the energy needed to start a reaction • Reaction that takes in energy in the form of heat • Reaction that gives out energy in the form of heat • Substance that participates in a chemical reaction • Solid that forms a solution during a chemical reaction • ...

Chemistry 2023-10-02

Chemistry crossword puzzle
Across
  1. Ability of a substance to conduct electricity.
  2. Basic unit of matter composed of protons, neutrons, and electrons.
  3. Substance made of two or more different elements chemically combined.
  4. Substance that cannot be broken down into simpler substances by chemical means.
  5. Amount of matter in an object.
  6. Substance that participates in a chemical reaction.
  7. State of matter such as solid, liquid, or gas.
  8. Homogeneous mixture of two or more substances.
  9. Tabular arrangement of chemical elements.
  10. Connection between atoms in a molecule.
Down
  1. Substance formed as a result of a chemical reaction.
  2. Substance that speeds up a chemical reaction without being consumed in the process.
  3. Substance with a pH less than 7, often corrosive and sour in taste.
  4. Chemical compound composed of two or more atoms bonded together.
  5. Atom or molecule with an electric charge.
  6. Measure of the average kinetic energy of particles in a substance.
  7. Substance with a pH greater than 7, often bitter and slippery in feel.
  8. Process in which atoms are rearranged to create new substances.
  9. Number of bonds an atom can form with other atoms.
  10. State of matter with no definite shape or volume.

20 Clues: Amount of matter in an object. • Connection between atoms in a molecule. • Atom or molecule with an electric charge. • Tabular arrangement of chemical elements. • Ability of a substance to conduct electricity. • State of matter such as solid, liquid, or gas. • Homogeneous mixture of two or more substances. • State of matter with no definite shape or volume. • ...

Topic 3 Vocab 2025-11-19

Topic 3 Vocab crossword puzzle
Across
  1. A mixture where tiny particles are spread throughout but don’t settle out.
  2. A mixture where one substance dissolves completely in another.
  3. A substance that starts a chemical reaction.
  4. Materials found in nature that people use.
  5. The new substance formed after a chemical reaction.
  6. A mixture where particles are spread out but will eventually settle at the bottom.
  7. A type of chemical reaction that releases heat and feels warm.
  8. A large molecule made by joining many smaller molecules together.
  9. A type of change in size, shape, or state that doesn’t create a new substance.
  10. Made by humans, not found naturally.
Down
  1. Says that matter cannot be created or destroyed in a chemical reaction; it only changes form.
  2. The substance that dissolves the solute in a solution.
  3. A system where matter can enter or leave.
  4. The substance that gets dissolved in a solution.
  5. A type of chemical reaction that absorbs heat and feels cold.
  6. A system where no matter enters or leaves.
  7. How much of a solute can dissolve in a solvent at a certain temperature.
  8. A type of change where substances combine or break apart to form new substances.
  9. A combination of two or more substances that are not chemically joined.

19 Clues: Made by humans, not found naturally. • A system where matter can enter or leave. • Materials found in nature that people use. • A system where no matter enters or leaves. • A substance that starts a chemical reaction. • The substance that gets dissolved in a solution. • The new substance formed after a chemical reaction. • ...

Biochemistry Vocabulary 2016-10-26

Biochemistry Vocabulary crossword puzzle
Across
  1. / molecular sub-unit of polymer
  2. / basic unit of life
  3. / a very large molecule as a colloidal, particle, protein or a polymer exposed of hundreds or thousands of atoms
  4. / a group that includes sugar, starch, and cellulose
  5. Bonds / chemical bond formed through the electrical force between oppositely charged ions
  6. / large, carbon based molecule formed by monomers
  7. / measurement of acidity
  8. Reaction / a chemical reaction in which two molecules or moieties, often functional groups, combine to form a larger molecule, together with the loss of a small molecule
  9. / attraction between molecules of the same substances
  10. Acid / polymer or necleotides
Down
  1. / protein that catalyzes chemical reactions for organisms
  2. Bond / attraction between a slightly negative bond
  3. / two or more atoms held together by covalent bonds
  4. acid / molecule that makes up proteins
  5. / attraction between molecules of different substance
  6. / substance that decreases activation energy and increases reaction rate in chemical reaction
  7. / molecule composed of C, H, O
  8. Synthesis / A chemical reaction that builds up molecules by losing water molecules
  9. / substance made of only one type of atom that cannot be broken down by chemical means
  10. & Key Model / Only the correct sized key (substrate) fits into the key hole (active site) of the lock (enzyme)
  11. / polymer composed of amino acids linked by peptide bonds
  12. / non-polar molecule composed of C, H, O

22 Clues: / basic unit of life • / measurement of acidity • Acid / polymer or necleotides • / molecule composed of C, H, O • / molecular sub-unit of polymer • acid / molecule that makes up proteins • / non-polar molecule composed of C, H, O • / large, carbon based molecule formed by monomers • Bond / attraction between a slightly negative bond • ...

Chemical Bonding Crossword 2017-03-23

Chemical Bonding Crossword crossword puzzle
Across
  1. A substance that undergoes chemical change
  2. A substance that reacts an acid to form a salt and water
  3. A solid which form and settles in a solution
  4. The substances formed as a result of chemical change
  5. The way chemists write down chemical reactions
  6. An Ion with a positive electric charge
  7. A chemical reaction that gives off energy
  8. The removal of acidity or alkalinity in a substance
  9. A way of describing the composition of a substance, using symbols or numbers
Down
  1. A chemical reaction that takes in energy
  2. A substance which contains hydrogen that can be replaced by a metal in solution, it turns litmus red
  3. The smallest particle of a compound which can normally exist by itself and still have the properties of the substance
  4. A substance containing two or more elements which have been chemically combined
  5. The energy needed for a reaction to occur
  6. The measure of acidity or alkalinity in a substance
  7. A compound made up of molecules: the molecules consist of atoms that are linked by sharing electrons
  8. A substance which alter the speed of a chemical reaction but remains chemically unchanged itself at the end of the reaction
  9. A compound mad up of ions
  10. A changed particle: an atom or group of atoms which has lost or gained electrons
  11. An ion with a negative electric charge

20 Clues: A compound mad up of ions • An Ion with a positive electric charge • An ion with a negative electric charge • A chemical reaction that takes in energy • The energy needed for a reaction to occur • A chemical reaction that gives off energy • A substance that undergoes chemical change • A solid which form and settles in a solution • ...

ElectroChemical Process 2025-03-26

ElectroChemical Process crossword puzzle
Across
  1. Substance that conducts electric current by movement of ions.
  2. Combined process of reduction and oxidation.
  3. Process of coating an object with metal using electricity.
  4. Process of using electricity to drive a chemical reaction.
  5. potential Voltage difference between two electrodes of a cell.
  6. cell Device that generates electrical energy from chemical reactions or vice versa.
  7. Purifying metal using electrochemical methods.
  8. transfer Movement of electrons from one substance to another.
  9. cell A cell that converts chemical energy into electrical energy spontaneously.
  10. Flow of electric charge.
  11. Device consisting of one or more electrochemical cells.
  12. electrode potential Measured voltage of an electrode under standard conditions.
  13. Loss of electrons in a chemical reaction.
  14. Electrode where oxidation occurs.
  15. Charged particles formed from atoms or molecules.
Down
  1. bridge Device that maintains electrical neutrality in a galvanic cell.
  2. Conductor through which electric current enters or leaves a solution.
  3. Part of an electrochemical cell where either oxidation or reduction occurs.
  4. Deposition of material on an electrode using electric current.
  5. Ability of a solution or material to conduct electricity.
  6. Gain of electrons in a chemical reaction.
  7. Extra voltage needed to drive an electrochemical reaction.
  8. Electrical potential difference between two points.
  9. law Law relating amount of substance altered at an electrode to quantity of electricity.
  10. Gradual destruction of materials by chemical reaction with environment.
  11. Electrode where reduction occurs.

26 Clues: Flow of electric charge. • Electrode where reduction occurs. • Electrode where oxidation occurs. • Gain of electrons in a chemical reaction. • Loss of electrons in a chemical reaction. • Combined process of reduction and oxidation. • Purifying metal using electrochemical methods. • Charged particles formed from atoms or molecules. • ...

Science terms 2024-12-06

Science terms crossword puzzle
Across
  1. a substance or molecule that participates in a chemical reaction
  2. A substance or molecule that forms in a chemical reaction.
  3. a dissolved substance.
  4. a dissolved substance
  5. the basic unit of a chemical element.
  6. reaction- A process that occurs when two or more molecule interact to form new molecules
  7. water or the amount of water that falls to the earth as hail, mist, rain, sleet, or snow.
Down
  1. Known as the "Middle life" around 252 to 66 million years ago.
  2. the mostly solid bulk of Earth's interior.
  3. a type of mixture involving two or more substances.
  4. A chemical reaction that absorbs energy from it's enviorment
  5. reaction- A chemical reaction that releases thermal energy.
  6. The central or innermost portion of the Earth, lying below the mantle and probably consisting of iron and nickel.
  7. two or more atoms connected by chemical bonds, which form the smallest unit of a substance that retains the composition and properties of that substance
  8. any of the large bodies that revolve around the Sun in the solar system

15 Clues: a dissolved substance • a dissolved substance. • the basic unit of a chemical element. • the mostly solid bulk of Earth's interior. • a type of mixture involving two or more substances. • A substance or molecule that forms in a chemical reaction. • reaction- A chemical reaction that releases thermal energy. • A chemical reaction that absorbs energy from it's enviorment • ...

Chemical Kinetics 2023-10-18

Chemical Kinetics crossword puzzle
Across
  1. - Reactant molecule acted upon by an enzyme.
  2. - Speed at which a chemical reaction occurs.
  3. - Reaction releasing heat.
  4. - Interaction between reactant particles.
  5. - Time for half of a reactant to be consumed.
  6. - A reaction mechanism with multiple steps.
  7. - Substance formed and consumed in a reaction mechanism.
  8. - Reaction absorbing heat.
  9. - Mechanisms involving reactants and intermediates.
  10. - Substance that speeds up a reaction without being consumed.
  11. - Theory explaining molecular motion and reaction rates.
  12. - State between reactants and products.
  13. - Factor affecting reaction rate.
  14. - State where forward and reverse rates are equal.
  15. - Reactants and catalyst in the same phase.
  16. - Exponent determining the reaction rate dependence on reactant concentration.
  17. - Amount of a substance in a given volume.
  18. - Factor affecting reaction rate for gases.
Down
  1. - Equation relating temperature to reaction rate.
  2. - Biological catalyst.
  3. - Process in which substances transform into new substances.
  4. - Equation expressing the rate of a reaction in terms of reactant concentrations.
  5. - Number of reactant particles in an elementary reaction.
  6. - Substance that slows down a reaction.
  7. - Simplest step in a reaction mechanism.
  8. - A sequence of steps explaining a reaction.
  9. - Energy required to start a reaction.
  10. - Step in a reaction mechanism with the slowest rate.
  11. - Reactants and catalyst in different phases.
  12. - Sum of the exponents in the rate law equation.

30 Clues: - Biological catalyst. • - Reaction releasing heat. • - Reaction absorbing heat. • - Factor affecting reaction rate. • - Energy required to start a reaction. • - Substance that slows down a reaction. • - State between reactants and products. • - Simplest step in a reaction mechanism. • - Interaction between reactant particles. • - Amount of a substance in a given volume. • ...

Kinetics and Hess's Law 2022-02-08

Kinetics and Hess's Law crossword puzzle
Across
  1. a reaction in which products are produced from reactants and it goes from left to right in a reversible reaction
  2. a process or reaction that releases energy from the system to its surroundings, usually in the form of heat, but also in a form of light, electricity, or sound
  3. the action of briskly stirring or disturbing something, especially a liquid
  4. a molecular entity that is formed from the reactants and reacts further to give the directly observed products of a chemical reaction
  5. the minimum quantity of energy which the reacting species must possess in order to undergo a specified reaction
  6. used to relate the free energy changes that occur during the progress of chemical processes to the rate and equilibrium constants of the process
  7. the process of increasing the rate of a chemical reaction by adding a substance known as a catalyst.
  8. a reaction in which the conversion of reactants to products and the conversion of products to reactants occur simultaneously
  9. a substance which slows down or prevents a particular chemical reaction or other process or which reduces the activity of a particular reactant, catalyst, or enzyme
Down
  1. any process with an increase in the enthalpy H of the system
  2. the branch of physical chemistry that is concerned with understanding the rates of chemical reactions
  3. a thermodynamic quantity equivalent to the total heat content of a system
  4. the amount of area covered by the surface of something
  5. the speed at which a chemical reaction takes place
  6. the degree or intensity of heat present in a substance or object
  7. he energy change in an overall chemical reaction is equal to the sum of the energy changes in the individual reactions comprising it

16 Clues: the speed at which a chemical reaction takes place • the amount of area covered by the surface of something • any process with an increase in the enthalpy H of the system • the degree or intensity of heat present in a substance or object • a thermodynamic quantity equivalent to the total heat content of a system • ...

Chemical reactions and equations 2026-05-08

Chemical reactions and equations crossword puzzle
Across
  1. chemical reaction with oxygen and releases energy
  2. what is created in a chemical reaction
  3. AB+CD -> AD+CB
  4. AB+C -> AC+B
  5. chemical reaction that releases energy
  6. (A+B -> AB)
Down
  1. (AB -> A+B)
  2. the symbolic representation of a chemical
  3. chemical reaction where the amount of atoms on each side is the same
  4. chemical reaction that absorbs energy
  5. the starting chemicals in a reaction

11 Clues: (AB -> A+B) • (A+B -> AB) • AB+C -> AC+B • AB+CD -> AD+CB • the starting chemicals in a reaction • chemical reaction that absorbs energy • what is created in a chemical reaction • chemical reaction that releases energy • the symbolic representation of a chemical • chemical reaction with oxygen and releases energy • ...

4.2.1 Key terms crossword puzzle. 2024-03-16

4.2.1 Key terms crossword puzzle. crossword puzzle
Across
  1. respiration The process by which cells break down glucose to produce energy.
  2. reaction A reaction where ions exchange partners to form new compounds.
  3. change A change in which new substances with different properties are formed.
  4. reaction A reaction in which two compounds exchange ions to form two new compounds.
  5. reaction A reaction where two or more substances combine to form a new compound.
  6. A mixture of two or more substances not chemically combined.
  7. Describes a substance that does not dissolve in a solvent.
  8. Forms when two solutions react to produce an insoluble solid.
Down
  1. reaction Type of reaction where a single compound breaks down into simpler substances.
  2. a substance that takes part in and undergoes change during a reaction.
  3. Describes a substance that can be dissolved in a solvent.
  4. Represents the physical form of matter (solid, liquid, gas).
  5. Starting substances in a chemical reaction.
  6. reaction A reaction in which two compounds exchange ions to form two new compounds.
  7. change A change in which no new substance is formed.
  8. formation reaction A reaction that produces gas as a product.
  9. equation Represents a chemical reaction using symbols and formulas.
  10. When a solid substance disperses into a liquid to form a solution.
  11. The maximum amount of solute that can dissolve in a solvent at a given temperature.

19 Clues: Starting substances in a chemical reaction. • change A change in which no new substance is formed. • Describes a substance that can be dissolved in a solvent. • Describes a substance that does not dissolve in a solvent. • Represents the physical form of matter (solid, liquid, gas). • A mixture of two or more substances not chemically combined. • ...

Chemical Reactions 2024-08-22

Chemical Reactions crossword puzzle
Across
  1. A reaction where a solid is formed from two aqueous solutions
  2. A pure substance
  3. A substance that takes part in a chemical reaction
  4. A reaction where the reactant breaks down into two or more products
  5. When the rate of reaction is increased by adding more particles.
  6. Particle with a negative charge
  7. When the reactants are broken up into a powder (___________ area)
Down
  1. The name of a biological catalyst (such as in your saliva)
  2. A reaction where two or more reactants create a new product
  3. When the rate of reaction is increased by adding a chemical that is not used up.
  4. A substance that is created in a chemical reaction
  5. The smallest possible particle of matter
  6. An atoms that has gained or lost electrons
  7. When the rate of reaction in increased by adding thermal energy.
  8. Two or more elements bonded together
  9. When the rate of reaction is increased by adding kinetic energy.

16 Clues: A pure substance • Particle with a negative charge • Two or more elements bonded together • The smallest possible particle of matter • An atoms that has gained or lost electrons • A substance that is created in a chemical reaction • A substance that takes part in a chemical reaction • The name of a biological catalyst (such as in your saliva) • ...

Chemical Reactions 2023-02-14

Chemical Reactions crossword puzzle
Across
  1. can be observed about a substance, such as color, smell, or boiling point
  2. chemical reaction in which heat energy is absorbed
  3. able to cause damage
  4. temperature at which a liquid changes to a gas
  5. smallest unit of matter
  6. process that changes one set of chemicals into another set of chemicals
  7. a change in state of matter where no new substances are formed
Down
  1. Chemical reaction in which energy is primarily given off in the form of heat
  2. temperature at which a solid becomes a liquid
  3. combo of chemical symbols and numbers to represent a substance
  4. undergoes change during a reaction
  5. to change the position of something
  6. matter with a composition that is always the same atoms or same groups of atoms
  7. forms in a chemical reaction
  8. speeds up the rate of a chemical reaction
  9. A change in matter that produces one or more new substances

16 Clues: able to cause damage • smallest unit of matter • forms in a chemical reaction • undergoes change during a reaction • to change the position of something • speeds up the rate of a chemical reaction • temperature at which a solid becomes a liquid • temperature at which a liquid changes to a gas • chemical reaction in which heat energy is absorbed • ...

Chemistry Now days 2024-06-08

Chemistry Now days crossword puzzle
Across
  1. A substance with a pH greater than 7 (4)
  2. Subatomic particle (8)
  3. Type of chemical bond formed by sharing electrons (9)
  4. Chemical species with an electric charge (3)
  5. Center of an atom (7)
  6. Type of substance formed by combining two or more elements (8)
  7. Particle with a positive charge in the nucleus (6)
  8. Smallest unit of a chemical element (4)
  9. Negatively charged particle (8)
Down
  1. Ending result of a chemical reaction (7)
  2. Substance that is dissolved in a solvent (6)
  3. A substance that speeds up a chemical reaction (8)
  4. Column in the periodic table (7)
  5. Substance in which the solute dissolves (7)
  6. Element with different numbers of neutrons (7)
  7. A substance with a pH less than 7 (4)
  8. Number of protons in an atom (7)
  9. Particle with no charge in the nucleus (7)
  10. Substance that participates in a chemical reaction (8)
  11. Basic unit of matter (4)

20 Clues: Center of an atom (7) • Subatomic particle (8) • Basic unit of matter (4) • Negatively charged particle (8) • Column in the periodic table (7) • Number of protons in an atom (7) • A substance with a pH less than 7 (4) • Smallest unit of a chemical element (4) • Ending result of a chemical reaction (7) • A substance with a pH greater than 7 (4) • ...

Intro to Chemistry 2023-03-15

Intro to Chemistry crossword puzzle
Across
  1. Chemical capable of restoring pH values to their normal value
  2. Electrons found in the outer energy level of an atom
  3. When a solid changes directly into a gas
  4. When a gas turns directly into a solid
  5. A pure substance in which two or more different elements are chemically combined
  6. Mixture in which substances are evenly mixed throughout
  7. When a gas turns into a liquid
  8. Molecules in which the electrons are not shared equally resulting in opposite charges on each end of the molecule
  9. Has a definite shape and volume
  10. Chemical with a pH of 7
  11. Change in which the chemical composition stays the same
  12. Chemical capable of speeding up a reaction without being changed by the reaction
  13. Chemical that releases hydrogen ions, H+, when dissolved in water, tastes sour, and has a pH below 7
  14. Chemical that removes hydrogen ions, H+, from water, taste bitter, and have a pH above 7
Down
  1. Change in which the chemical composition changes and a new substance is produced
  2. Substances that react during a chemical reaction
  3. Mixtures in which the separate parts can be easily distinguished
  4. Substances that are produced during a chemical reaction
  5. Has a definite volume but takes the shape of its container
  6. Weak chemical bond formed when a hydrogen atom bonds with an oxygen or nitrogen atoms on another polar molecule
  7. Specific regions in which electrons orbit the nucleus of an atom
  8. A pure substance in which all the atoms are the same
  9. Chemical bond formed when metals and non-metals exchange electrons
  10. Chemical bond formed when two non-metals share electrons
  11. Takes both its shape and volume from its container

25 Clues: Chemical with a pH of 7 • When a gas turns into a liquid • Has a definite shape and volume • When a gas turns directly into a solid • When a solid changes directly into a gas • Substances that react during a chemical reaction • Takes both its shape and volume from its container • Electrons found in the outer energy level of an atom • ...

Unit 1 Test 2023-10-23

Unit 1 Test crossword puzzle
Across
  1. photosynthesis and cellular respiration are considered to be a _____
  2. the arrow in chemical equations points (towards OR away) the products
  3. chemical formula for energy
  4. internal balance
  5. pores in the leaves of plants that are responsible for gas exchange
  6. ____________, ATP, and carbon dioxide are products of cellular respiration
  7. the number of oxygen molecules in 6CO2
  8. both the carbon cycle and photosynthesis/cellular respiration are examples of the conservation of _____________
  9. how plants get water
  10. total number of water molecules in 6H2O
  11. water, sunlight, and ___________ are reactants of photosynthesis
  12. organelle that does photosynthesis
  13. which osmotic solution is an example of homeostasis?
  14. ______________ and glucose are reactants of cellular respiration
Down
  1. the organelle that does cellular respiration
  2. the outputs of a chemical reaction
  3. the common name for C6H12O6
  4. body temperature is an example of ______________ feedback
  5. negative feedback is a response in the ______________ direction
  6. positive feedback is a response in the _________ direction
  7. light energy into chemical energy (C6H12O6)
  8. smallest unit of matter
  9. chemical reaction that turns glucose into ATP, cellular ______________
  10. the inputs of a chemical reaction
  11. chemical reaction in cells that creates energy
  12. how humans rid themselves of CO2
  13. blood clotting is an example of ______________ feedback
  14. _____________ cycle, movement of C throughout an ecosystem
  15. the chemical equations for photosynthesis and cellular respiration are ________ of each other

29 Clues: internal balance • how plants get water • smallest unit of matter • the common name for C6H12O6 • chemical formula for energy • how humans rid themselves of CO2 • the inputs of a chemical reaction • the outputs of a chemical reaction • organelle that does photosynthesis • the number of oxygen molecules in 6CO2 • total number of water molecules in 6H2O • ...

Chemical Reactions 2025-04-29

Chemical Reactions crossword puzzle
Across
  1. substance formed after chemical reaction
  2. oxidation of fat
  3. reactions in which one substance reacts to form two or more substances
  4. solid residue after chemical reaction
  5. receiving hydrogen and removing oxygen
  6. seperating hydrogen and oxygen in water
  7. reaction that gives out heat
  8. reactions in which two substances combine
Down
  1. receiving oxygen and removing hydrogen
  2. more reactive metal exchanges with less reactive metal
  3. process of color change of metals due to moisture or air
  4. substance that speeds up chemical reaction
  5. decomposition through sunlight
  6. reaction that absorb heat
  7. decomposition through heat

15 Clues: oxidation of fat • reaction that absorb heat • decomposition through heat • reaction that gives out heat • decomposition through sunlight • solid residue after chemical reaction • receiving oxygen and removing hydrogen • receiving hydrogen and removing oxygen • seperating hydrogen and oxygen in water • substance formed after chemical reaction • ...

Unti 2 - Investigating Chemical Reactions 2025-09-12

Unti 2 - Investigating Chemical Reactions crossword puzzle
Across
  1. chemical reaction that plants use to make food
  2. number that shows how many atoms of an element
  3. a pure substance formed by a chemical combination of 2 or more elements in a specific ratio
  4. the amount of each atom type used in a compound
  5. the substances that are formed as a result of a chemical reaction
  6. a/an __________ chemical equation with the same number of atoms of each element on both sides
  7. the coefficient is the large number found at the ________ of a formula
  8. a pure substance made of only one kind of atom
  9. another word for "makes, creates, or produces"
Down
  1. more than one element bonded
  2. a chemical process that will cause reactants to rearrange their bonds and form products
  3. a/an ______________ chemical equation where the atoms in the reactants do not equal the atoms in the products
  4. number that shows how many molecules of a compound
  5. used to identify an element; will always start with 1 capital letter
  6. the subscript is found below and to the _________ of a symbol
  7. smallest particle of an element
  8. the substances that are used in a chemical reaction
  9. combination of more than one chemical symbol used to represent a compound

18 Clues: more than one element bonded • smallest particle of an element • chemical reaction that plants use to make food • number that shows how many atoms of an element • a pure substance made of only one kind of atom • another word for "makes, creates, or produces" • the amount of each atom type used in a compound • number that shows how many molecules of a compound • ...

Chemistry 2021-05-25

Chemistry crossword puzzle
Across
  1. The chemical equation type shown by AB = A + B
  2. The ______ table is used to identify elements
  3. The part of an atom with a positive charge
  4. 14.01 is the atomic ____ of nitrogen
  5. Has the chemical formula of Pb
  6. Atomic number of beryllium
  7. General category of an enzyme that increases the rate of a reaction
  8. The chemicals that you start with in a chemical reaction
  9. The numbers that are added in front of a reactant or products when balancing an equation
Down
  1. The part of an atom with a negative charge
  2. AB + CD = AD + CB is a double _________
  3. NaCl is an _____ compound
  4. A ____ model is used to show the configurations of electrons within an atom
  5. Element with chemical symbol of U
  6. When atoms combine to form bigger particles, it is called a _______
  7. The _____ theory is what is used to help determine whether a rate of reaction is increased or decreased
  8. The chemicals that you end with in a chemical reaction
  9. The chemical equation type shown by A + B = AB
  10. Consisting of two atoms. Hydrogen, Oxygen and Nitrogen are examples.
  11. the smallest particle that makes up a substance

20 Clues: NaCl is an _____ compound • Atomic number of beryllium • Has the chemical formula of Pb • Element with chemical symbol of U • 14.01 is the atomic ____ of nitrogen • AB + CD = AD + CB is a double _________ • The part of an atom with a negative charge • The part of an atom with a positive charge • The ______ table is used to identify elements • ...

Jacob Johnston's Crossword 2024-05-15

Jacob Johnston's Crossword crossword puzzle
Across
  1. the ability to do work or cause change
  2. when a substance turns into new substances
  3. a characteristic of a substance that is measurable or observable during a chemical reaction
  4. a pure substance that is formed when two or more different elements combine
  5. a combination of substances that can be physically separated from one another
  6. the substances present before a chemical reaction occurs
  7. the transfer of thermal energy
  8. has mass and takes up some amount of space
  9. two or more atoms joined together
Down
  1. change
  2. a pure substance that cannot be broken down into simpler substances by chemical reactions
  3. a characteristic that can be observed
  4. the smallest unit of an element
  5. the substance that is formed from a chemical reaction
  6. a substance that lowers the rate of a reaction by lowering the amount of energy needed for the reaction
  7. the amount of matter in an object
  8. the ability of molecules of the same substance to stick together
  9. a change in matter that does not affect its chemical composition

18 Clues: change • the transfer of thermal energy • the smallest unit of an element • the amount of matter in an object • two or more atoms joined together • a characteristic that can be observed • the ability to do work or cause change • when a substance turns into new substances • has mass and takes up some amount of space • the substance that is formed from a chemical reaction • ...

Phys Sci Crossword 2 2021-02-17

Phys Sci Crossword 2 crossword puzzle
Across
  1. substances consumed in the course of a chemical reaction.
  2. an organic chemical compound composed exclusively of hydrogen and carbon atoms.
  3. The process of conversion of a chemical substance into a solid from a solution by converting the substance into an insoluble form or a super-saturated solution
  4. a chemical breakdown
  5. burning
  6. this is affected by both the atomic number and the distance at which its valence electrons reside from the charged nucleus.
  7. A chemical bond is a lasting attraction between atoms, ions or molecules
Down
  1. any of a material's properties that becomes evident in a chemical reaction
  2. is a process leading to the transformation of one set of substances to another
  3. a pure substance that cannot be broken down into simpler substances by chemical means.
  4. is the smallest unit of ordinary matter that forms a chemical element.
  5. defined by the electron configuration of the system, and by the quantum numbers of each electron contributing to that configuration.
  6. A salt metathesis reaction
  7. are specific patterns in the properties of chemical elements that are revealed in the periodic table of elements.
  8. chemical synthesis is the execution of chemical reactions to form a more complex molecule from chemical precursors
  9. both a property of a physical body and a measure of its resistance to acceleration when a net force is applied.
  10. the atomic nucleus is the small, dense region consisting of protons and neutrons at the center of an atom.
  11. A measure of how much solute can dissolve in a given solvent at a given temperature
  12. a subatomic particle with a positive electric charge
  13. is the symbolic representation of a chemical reaction in the form of symbols

20 Clues: burning • a chemical breakdown • A salt metathesis reaction • a subatomic particle with a positive electric charge • substances consumed in the course of a chemical reaction. • is the smallest unit of ordinary matter that forms a chemical element. • A chemical bond is a lasting attraction between atoms, ions or molecules • ...

Chemical Reactions Crossword 2025-11-21

Chemical Reactions Crossword crossword puzzle
Across
  1. A chemical reaction in which one element replaces another in a compound or when two elements in different compounds trade places
  2. A change/reaction that releases energy, usually in the form of heat
  3. A change that alters the form or appearance of a material but does not make the material into another substance
  4. A change/reaction that absorbs energy
  5. A chemical reaction that breaks down compounds into simpler products
Down
  1. A number in a chemical formula that tells the number of atoms in a molecule or the ratio of elements in a compound
  2. A chemical reaction in which two or more simple substances combine to form a new, more complex substance
  3. A change in which one or more substances combine or break apart to form new substances
  4. A solid that forms from a solution during a chemical reaction
  5. A substance that enters into a chemical reaction
  6. The Law of Conservation of ____, states that the total amount of matter is neither created nor destroyed during any chemical or physical change
  7. A number in front of a chemical formula in an equation that indicates how many molecules or atoms of each reactant and product are involved in a a reaction
  8. A substance formed as a result of a chemical reaction

13 Clues: A change/reaction that absorbs energy • 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 • A change/reaction that releases energy, usually in the form of heat • A chemical reaction that breaks down compounds into simpler products • ...

chapter 5 activity choice board 2021-11-30

chapter 5 activity choice board crossword puzzle
Across
  1. chemical reactions that absorb thermal energy
  2. a description of a reaction using element symbols and chemical formula
  3. a substance that increases reaction rate
  4. a chemical reaction in which a substance combines with oxygen to release energy
  5. when one element swaps with another in a compound
  6. a process in which atoms of one or more substances rearrange to form one or more new substances
  7. a type of chemical reaction in which two substances combine to form one compound
Down
  1. how one compound breaks down to create one or more new substances
  2. when two elements swap with others in compounds
  3. a substance that slows or even stops a reaction rate
  4. the total mass of the reactants of a chemical equation shall be the same as the products
  5. the minimum amount of energy required to start a chemical reaction
  6. a chemical reaction that release thermal energy

13 Clues: a substance that increases reaction rate • chemical reactions that absorb thermal energy • when two elements swap with others in compounds • a chemical reaction that release thermal energy • when one element swaps with another in a compound • a substance that slows or even stops a reaction rate • how one compound breaks down to create one or more new substances • ...

crossword 2024-12-10

crossword crossword puzzle
Across
  1. a substance or molecule that participates in a chemical reaction
  2. A substance or molecule that forms in a chemical reaction.
  3. a dissolved substance.
  4. a dissolved substance
  5. the basic unit of a chemical element.
  6. reaction- A process that occurs when two or more molecule interact to form new molecules
  7. water or the amount of water that falls to the earth as hail, mist, rain, sleet, or snow.
Down
  1. Known as the "Middle life" around 252 to 66 million years ago.
  2. the mostly solid bulk of Earth's interior.
  3. a type of mixture involving two or more substances.
  4. A chemical reaction that absorbs energy from it's enviorment
  5. reaction- A chemical reaction that releases thermal energy.
  6. The central or innermost portion of the Earth, lying below the mantle and probably consisting of iron and nickel.
  7. two or more atoms connected by chemical bonds, which form the smallest unit of a substance that retains the composition and properties of that substance
  8. any of the large bodies that revolve around the Sun in the solar system

15 Clues: a dissolved substance • a dissolved substance. • the basic unit of a chemical element. • the mostly solid bulk of Earth's interior. • a type of mixture involving two or more substances. • A substance or molecule that forms in a chemical reaction. • reaction- A chemical reaction that releases thermal energy. • A chemical reaction that absorbs energy from it's enviorment • ...

Law of Conservation of Mass 2024-11-11

Law of Conservation of Mass crossword puzzle
Across
  1. - To make equal; in chemistry, ensuring the same number of atoms on both sides of the equation.
  2. - A scientific principle that describes a consistent natural phenomenon.
  3. - The amount of space an object occupies.
  4. - To keep constant; in chemistry, preserving mass during reactions.
  5. - The amount of matter in an object.
  6. - Substance present at the start of a chemical reaction.
  7. - Capacity to do work or produce change, involved in reactions.
  8. - A process in which substances change to form new substances.
  9. - A process of transformation, such as in a chemical or physical state.
  10. - A representation of a chemical reaction using symbols.
  11. - The smallest unit of an element.
Down
  1. - A group of atoms bonded together.
  2. - Anything that has mass and occupies space.
  3. - Describes a system where no matter enters or leaves.
  4. - A connection between atoms in a molecule.
  5. - A substance made of only one kind of atom.
  6. - A small number in a chemical formula indicating the number of atoms in a molecule.
  7. - A distinct form of matter, like solid, liquid, or gas.
  8. - Substance formed as a result of a chemical reaction.
  9. - A number placed in front of a chemical formula to balance an equation.

20 Clues: - The smallest unit of an element. • - A group of atoms bonded together. • - The amount of matter in an object. • - The amount of space an object occupies. • - A connection between atoms in a molecule. • - Anything that has mass and occupies space. • - A substance made of only one kind of atom. • - Describes a system where no matter enters or leaves. • ...

Chemistry 2024-10-21

Chemistry crossword puzzle
Across
  1. - A substance that accepts protons (H⁺ ions) in a solution and has a pH greater than 7.
  2. - A distinct form of matter, such as solid, liquid, or gas, characterized by uniform properties.
  3. - A chemical reaction that combines two or more simple substances to form a more complex product.
  4. - A substance that dissolves a solute, resulting in a solution, commonly a liquid.
  5. - The amount of solute present in a given volume of solution, often expressed in molarity.
  6. Table - A tabular arrangement of chemical elements organized by increasing atomic number and similar properties.
  7. Reaction - A process that involves the transformation of one set of chemical substances into another.
  8. - A measure of the average kinetic energy of the particles in a substance, affecting reaction rates.
  9. Rate - The speed at which a chemical reaction occurs, influenced by factors such as temperature and concentration.
  10. Bond - A chemical bond formed through the electrostatic attraction between oppositely charged ions.
  11. - A chemical process in which an atom or molecule loses electrons, often associated with an increase in oxidation state.
  12. Chemistry - The branch of chemistry that studies the structure, properties, and reactions of carbon-containing compounds.
  13. - A substance that conducts electricity when dissolved in water or molten, due to the presence of ions.
  14. - A metabolic process that converts sugar to acids, gases, or alcohol, often used in food production.
  15. - The substance that is dissolved in a solvent to form a solution.
  16. - A substance formed when two or more elements are chemically bonded together in fixed proportions.
Down
  1. - A pure substance that cannot be broken down into simpler substances and is made up of only one type of atom.
  2. - The calculation of reactants and products in chemical reactions based on the conservation of mass.
  3. - A type of chemical reaction where a compound breaks down into simpler substances.
  4. - An organic compound composed exclusively of hydrogen and carbon atoms, foundational in organic chemistry.
  5. - A mixture of two or more metals, or a metal and another element, designed to enhance properties.
  6. - A scale used to specify the acidity or basicity of an aqueous solution, ranging from 0 to 14.
  7. - A solid formed from a solution during a chemical reaction, often resulting from the combination of ions.
  8. - An atom or molecule that has a net electric charge due to the loss or gain of one or more electrons.
  9. - The smallest unit of matter that retains the properties of an element.
  10. - A substance that donates protons (H⁺ ions) in a solution and has a pH less than 7.
  11. - A group of two or more atoms bonded together, representing the smallest fundamental unit of a chemical compound.
  12. Bond - A type of chemical bond formed when two atoms share one or more pairs of electrons.
  13. - A substance that increases the rate of a chemical reaction without being consumed in the process.
  14. - A chemical reaction that involves the gain of electrons by an atom or molecule, resulting in a decrease in oxidation state.

30 Clues: - The substance that is dissolved in a solvent to form a solution. • - The smallest unit of matter that retains the properties of an element. • - A substance that dissolves a solute, resulting in a solution, commonly a liquid. • - A type of chemical reaction where a compound breaks down into simpler substances. • ...

Balancing Chemical Equations 2023-05-13

Balancing Chemical Equations crossword puzzle
Across
  1. reactions usually occur faster at higher _____
  2. the process in which atoms are rearranged to produce new
  3. reaction rate is higher when reactant _____ is higher
  4. _____ can increase reaction rate by bringing together reactants
  5. crushing or grinding solids increases _____ and reaction rate
  6. substances formed in a chemical reaction
  7. uses chemical symbols and numbers to represent a given substance
  8. state that energy can’t be created or destroyed only change form
Down
  1. expression that uses symbols to show relationship between starting substances and substances that are produced by chemical reaction
  2. substances that participate in chemical reaction
  3. chemical that requires input of energy
  4. chemical reaction when energy is released to surroundings

12 Clues: chemical that requires input of energy • substances formed in a chemical reaction • reactions usually occur faster at higher _____ • substances that participate in chemical reaction • reaction rate is higher when reactant _____ is higher • the process in which atoms are rearranged to produce new • chemical reaction when energy is released to surroundings • ...

Chapter 10 Science 2024-12-02

Chapter 10 Science crossword puzzle
Across
  1. reaction ( any chemical reaction that absorbs heat from its environment.)
  2. (a mark or character used as a conventional representation of an object, function, or process, e.g. the letter or letters standing for a chemical element or a character in musical notation.)
  3. (the basic unit of a chemical element.)
  4. (a thing that inhibits someone or something.)
  5. reaction (a chemical reaction that releases energy by light or heat.)
  6. (the branch of science that deals with the identification of the substances of which matter is composed; the investigation of their properties and how they interact, combine, and change; and the use of these processes to form new substances.)
  7. Change (a type of change where the physical properties of matter change.)
  8. (a substance made by mixing other substances.)
  9. (a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.)
  10. (cause (an event or situation, typically one that is bad or undesirable) to happen suddenly, unexpectedly, or prematurely.)
  11. (a liquid mixture in which the minor component (the solute) is uniformly distributed within the major component. The solvent)
  12. (a numerical or constant quantity placed before and multiplied the variable in an algebraic)
  13. equation (a symbolic representation of a chemical reaction in the form of symbols and formulae.)
  14. (the state or process of rotting; decay.)
Down
  1. (the combination of ideas to form a theory or system.)
  2. (an article or substance that is manufactured or refined for sale.)
  3. (a substance that takes part in and undergoes change during a reaction.)
  4. (a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.)
  5. (a thing that is composed of two or more separate elements; a mixture.)
  6. of mass (a principle stating that mass cannot be created or destroyed.)
  7. (the action or process of replacing someone or something.)
  8. (the process of burning something.)
  9. bond (a connection between two surfaces or objects that have been joined together, especially using an adhesive substance, heat, or pressure.)
  10. (a substance produced by a living organism that acts as a catalyst to bring about a specific biochemical reaction.)
  11. formula (a mathematical relationship or rule expressed in symbols.)
  12. (of a letter, figure, or symbol) written or printed below the line.)
  13. (material such as coal, gas, or oil that is burned to produce heat or power.)
  14. Change (a change of materials into another, new materials with different properties and one or more than one new substance are formed.)
  15. (a part or aspect of something abstract, especially one that is essential or characteristic.)
  16. energy (the minimum quantity of energy that the reacting species must possess to undergo a specified reaction.)

30 Clues: (the process of burning something.) • (the basic unit of a chemical element.) • (the state or process of rotting; decay.) • (a thing that inhibits someone or something.) • (a substance made by mixing other substances.) • (the combination of ideas to form a theory or system.) • (the action or process of replacing someone or something.) • ...

Stoichiometry 2026-03-13

Stoichiometry crossword puzzle
Across
  1. quantity of product you expect stoichiometrically from a chemical reaction
  2. number of units in one mole of any substance
  3. way of analysis/solving problems that involves aligning the units of measurements
  4. reactant that gets consumed first in a chemical reaction
  5. ratio of the actual yield to the theoretical yield
Down
  1. ratio between the amounts in moles of any two compounds involved in a balanced chemical reaction
  2. The mass of one mole of a substance.
  3. reactants that are not used up when the reaction is finished
  4. moles in 2.41 x 10^24 molecules of chlorine
  5. calculation of quantities in a chemical reaction based on a balanced equation
  6. number of moles in 107.87 grams of silver
  7. number of moles in 28.02 grams of nitrogen
  8. grams in three moles of hydrogen
  9. moles in 3.01 x 10^24 molecules of oxygen
  10. quantity of a product found to be formed in a chemical reaction

15 Clues: grams in three moles of hydrogen • The mass of one mole of a substance. • number of moles in 107.87 grams of silver • moles in 3.01 x 10^24 molecules of oxygen • number of moles in 28.02 grams of nitrogen • moles in 2.41 x 10^24 molecules of chlorine • number of units in one mole of any substance • ratio of the actual yield to the theoretical yield • ...

REACTIONS 2026-05-13

REACTIONS crossword puzzle
Across
  1. Equation with the same number of atoms on both sides.
  2. Number placed before a chemical formula to balance an equation.
  3. Equation where atoms are not equal on both sides.
  4. Reaction in which one compound breaks into simpler substances.
  5. Total number of atoms of each element in an equation.
  6. Scientific law stating matter cannot be created or destroyed.
  7. of mass Principle stating that mass remains constant during a reaction.
Down
  1. Symbolic representation of a chemical reaction using formulas.
  2. Reaction where two or more substances combine to form one product.
  3. Technique used to balance equations by testing different coefficients.
  4. Study of quantitative relationships in chemical reactions.
  5. Process in which substances change into new substances.
  6. Substance formed after a chemical reaction occurs.
  7. Substance present at the beginning of a chemical reaction.
  8. Small number written below a symbol showing the number of atoms.

15 Clues: Equation where atoms are not equal on both sides. • Substance formed after a chemical reaction occurs. • Equation with the same number of atoms on both sides. • Total number of atoms of each element in an equation. • Process in which substances change into new substances. • Study of quantitative relationships in chemical reactions. • ...

Chemical Reactions 2022-05-23

Chemical Reactions crossword puzzle
Across
  1. a chemical equation that has the same number of atoms of each element on both sides of the reaction arrow
  2. show the number of molecules of each substance needed to balance a chemical reaction
  3. mass in grams of one mole of a substance
  4. a reaction in which one substance is broken down into two or more substances
  5. a reaction in which two or more substances combine to form a new substance
  6. the amount of energy needed to start a chemical reaction
Down
  1. a substance dissolved in water
  2. a reaction that absorbs heat energy
  3. a reaction in which one element replaces another in a compound
  4. the starting substances in a chemical reaction
  5. the ending substances in a chemical reaction
  6. a unit of measurement used to count atoms or molecules, equal to 6.022 x 10^24
  7. a reaction that releases heat energy

13 Clues: a substance dissolved in water • a reaction that absorbs heat energy • a reaction that releases heat energy • mass in grams of one mole of a substance • the ending substances in a chemical reaction • the starting substances in a chemical reaction • the amount of energy needed to start a chemical reaction • a reaction in which one element replaces another in a compound • ...

abraham 2020-01-17

abraham crossword puzzle
Across
  1. a substance that decreases the rate of or stops completely a chemical reaction.
  2. a measure of the amount of dissolved substance contained per unit of volume.
  3. a principle stating that if a constraint (such as a change in pressure, temperature, or concentration of a reactant) is applied to a system in equilibrium, the equilibrium will shift so as to tend to counteract the effect of the constraint.
  4. rate of a chemical reaction is defined as the change in the concentration of a reactant or a product over the change in time,
  5. that is a measure of the energy that is not available for work
  6. a measure of the warmth or coldness of an object or substance
  7. substance obtained from another substance through chemical change.
  8. can go in both directions; reactants can turn into products, and products can turn back into reactants
  9. any substance that undergoes a chemical change in a given reaction.
  10. chemical property referring to the ability for a given substance, the solute, to dissolve in a solvent.
  11. a type of chemical reaction in which one reactant yields two or more products.
  12. ubstance or mixture of compounds that, added to a solution, is capable of neutralizing both acids and bases without appreciably changing the original acidity or alkalinity of the solution.
Down
  1. the minimum quantity of energy which the reacting species must possess in order to undergo a specified reaction.
  2. the surface area of a substance generally increases the rate of a chemical reaction.
  3. an electron of an atom, located in the outermost shell (valence shell) of the atom, that can be transferred to or shared with another atom.
  4. a reaction in which one element is substituted for another element in a compound.
  5. the forming or building of a more complex substance or compound from elements or simpler compounds.
  6. a substance that causes or accelerates a chemical reaction without itself being affected.
  7. a force exerted by the substance per unit area on another substance
  8. the structure that results in the maximum energy point along the reaction path.
  9. hemical combination attended by production of heat and light.
  10. the loss of electrons during a reaction by a molecule, atom or ion
  11. a thermodynamic property of a system. It is the sum of the internal energy added to the product of the pressure and volume of the system

23 Clues: a measure of the warmth or coldness of an object or substance • hemical combination attended by production of heat and light. • that is a measure of the energy that is not available for work • substance obtained from another substance through chemical change. • the loss of electrons during a reaction by a molecule, atom or ion • ...