Chemical Reactions

7. mass cannot be created or destroyed in ordinary chemical and physical changes
8. the process by which one or more substances change to produce one or more different substances
9. the oxidation reaction of an organic compound, in which heat is released
12. rate the rate at which a chemical reaction takes place; measured by the rate of formation of the product or the rate of disappearance of the reactants
13. a substance that forms in a chemical reaction
16. a reaction in which two or more substances combine to form a new compound

1. a reaction in which one element or radical takes the place of another element or radical in a compound
2. a representation of a chemical reaction that uses symbols to show the relationship between the reactants and the products
3. the energy released when a chemical compound reacts to produce new compounds
4. a chemical reaction in which heat is released to the surroundings
5. a substance or molecule that participates in a chemical reaction
6. This happens when the reactant ion changes places to form a new product.
9. a substance that changes the rate of a chemical reaction without being consumed or changed significantly
10. a chemical reaction that requires heat
11. a reaction in which a single compound breaks down to form two or more simpler substances
14. a solid that is produced as a result of a chemical reaction in solution
15. a small whole number that appears as a factor in front of a formula in a chemical equation