Unit 9 Vocab

3. Process by which the atoms of one or more substances are rearranged to form different substances
5. The substance that gets dissolved in a solution
9. When 1 reactant breaks down into 2 or more products
11. Chemical reactions that release energy in the form of heat
12. The substance that does the dissolving in a solution (usually a liquid like water).
13. One element replaces a similar element in a compound
14. Tells us the number of each substance needed
15. A change in a substance that affects its chemical properties thus a chemical reaction occurs and a new substance is formed.
17. The minimum amount of energy needed to start a chemical reaction.
18. 2 or more reactants combine to make 1 product
22. Chemical reactions that absorb energy
23. Matter can neither be created or destroyed, it can only change forms. "Law of (3 Words)"

1. Ending substances; what is made.
2. A combination of two or more substances that are not chemically bonded and can be separated
4. Chemical reactions that absorb energy in the form of heat
6. Two ionic compound reactants switch ions, forming two new ionic compound products
7. A type of mixture where one substance is evenly dissolved into another (like salt in water).
8. A change in a substance that only affects its physical properties.
10. How quickly a reaction will take place
16. A substance that speeds up a chemical reaction without being used up.
19. Chemical reactions that release energy
20. When something is burned
21. Starting substances; “ingredients”