Chemical Reactions

3. something that is made of all the same atoms or groups of atoms
8. to change the order or position of something
10. letters and numbers showing the types and number of atoms that repeat to make up a substance
12. the temperature at which a substance changes from the liquid phase to the gas phase
13. an ending substance that is made during a chemical reaction
14. a group of atoms joined together in a particular way
15. the tiny pieces that all matter—all the stuff in the world—is made of
16. something that can be observed about a substance, such as color, smell, or boiling point

1. able to cause damage
2. the temperature at which a substance changes from the solid phase to the liquid phase
4. the relative size of things
5. a process in which atoms rearrange to form new substances
6. a structure formed by repeating groups of atoms that link together in a large network
7. an object, diagram, or computer program that helps us understand something by making it simpler or easier to see
9. a starting substance that is part of a chemical reaction
11. a substance that is added to soil to help plants grow