Vocab Unit 4 Practice

2. A natural catalyst used by living things that can be used to speed up the digestion process.
4. Another name for a molecule that that refers to when 2 atoms bond together.
5. Occurs when atoms gain oxygen in a chemical reaction
7. This law states that in a chemical reaction, mass(atoms) cannot be created or destroyed.
9. This type of reaction only includes carbon, hydrogen and oxygen.
11. A reaction in which, under the right conditions, the products can be turned back into the reactants.
13. A reaction in which the products can never be turned back into the reactants.
16. A substance which speeds up a chemical reaction without being changed by the reaction.
17. A bond that transfers electrons between a metal and a nonmetal.

1. Refers to a type of reaction that is broken down from one compound to two separate parts.
3. A reaction that gains hydrogen atoms but loses oxygen atoms.
6. A bond that shares electrons between to metals or two non metals.
8. Refers to a type of reaction when 2 elements come together to create one product.
10. this principle states that if a change is made to one side of a reaction then the other side must counter the effects of that change.
12. The point at which the rate of the reaction matches the rate of the backwards reaction.
14. A reaction where both oxidation and reduction occur
15. An atom or group of atoms that has become charged by gaining or losing one or more electrons. (it is looking to bond)