Across
- 2. chemical equation with the same number of atoms of each element on both sides of the equation
- 3. reactions in which one element replaces a similar element in a compound
- 5. A chemical reaction in which heat is absorbed
- 8. a small whole number that appears in front of a formula in a balanced chemical equation
- 12. a chemical reaction in which heat is released to the surroundings
- 13. a substance combines with oxygen, releasing a large amount of energy in the form of light and heat
- 17. a substance that takes part in and undergoes change during a reaction
- 18. a reaction in which a single compound breaks down to form two or more simpler substances
- 20. a reaction in which two or more substances combine to form a new compound
Down
- 1. The elements or compounds produced by a chemical reaction.
- 4. water solavent
- 6. Chemical agents that selectively speed up chemical reactions without being consumed by the reaction.
- 7. Matter is not created nor destroyed in any chemical or physical change
- 9. change substances into different substances by breaking and forming chemical bonds
- 10. reactions in which the ions of two compounds exchange places in an aqueous solution to form two new compounds
- 11. The reactant that is completely consumed in a chemical reaction, limiting the amount of product formed.
- 14. the reactants that bind to the enzyme
- 15. A number in a chemical formula that tells the number of atoms in a molecule or the ratio of elements in a compound
- 16. the minimum amount of energy required to start a chemical reaction
- 19. Catalysts for chemical reactions in living things