Chemical reactions

5. Script used to denote the number of atoms in a compound
7. a chemical reaction that energy is released
9. A reaction that involves to breaking down of a compound to simpler substances
11. a substance that speeds up a reaction
13. the amount of solute dissolved in a given amount of solvent
14. Law of _____________ of Energy states that energy can neither be created nor destroyed
15. a chemical reaction in which energy is absorbed
16. substances formed in a chemical reaction

1. an increase in it will speed up the particles thus increasing the rate of reaction
2. The Law of Conservation of _______, says that Mass can neither be created nor destroyed
3. a reaction in which a hydrocarbon is burned
4. A reaction in which elements combine to form a compound
6. Used in a chemical equation to denote the number of molecules
8. a substance that slows down the speed of a reaction
10. Starting material in a chemical reaction
12. The amount of energy needed to get a reaction started