vocab 6 physical science

3. a chemical reaction that requires heat
5. a substance that forms in a chemical reaction
7. any chemical change in which one species is oxidized and one is reduced
12. process in which an a electric current is used to produce a chemical reaction
14. the oxidation reaction of an organic compound in which heat is release
15. the relative number of moles of the substances required to produce a given amount of product in a chemical reaction
17. the energy released when a chemical compound reacts to release a new compound
18. a state of balance of in which the rate of a forward reaction equals the rate of a reverse reaction and the concentration of products and reactions remains unchanged
19. a reaction in which energy is released into the environment

1. a reaction in which two or more substances combine to form a new compound
2. a reaction in which a single compound breaks down into two or more simpler substances
4. an organic group that has one or more electrons available for bonding
6. a reaction in which one element or radical takes the place of another element or radical in a compound
8. a substance or molecule that participates in a chemical reaction
9. a reaction in which a gas, solid precipitate or a molecular compound forms from the apparent exchange of atoms or ions between two compounds
10. a representation of a chemical reaction that uses symbols to show the relationship between the reactants and the products
11. a part, substance, or element that lies beneath and supports another part, substance, or element
13. a type of protein that speeds up the metabolic reactions in plants and animals without being permanently changed or destroyed
16. a substance that changes the rate of a chemical reaction without being consumed or changed significantly