Chemical Reactions

3. to change the order or position of something
4. an object, diagram, or computer program that helps us understand something by making it simpler or easier to see
5. the relative size of things
6. a starting substance that is part of a chemical reaction
7. the temperature at which a substance changes from the liquid phase to the gas phase
10. an ending substance that is made during a chemical reaction
12. a structure formed by repeating groups of atoms that link together in a large network
13. letters and numbers showing the types and number of atoms that repeat to make up a substance
14. a substance that is added to soil to help plants grow

1. something that can be observed about a substance, such as color, smell, or boiling point
2. able to cause damage
4. the temperature at which a substance changes from the solid phase to the liquid phase
8. the tiny pieces that all matter—all the stuff in the world—is made of
9. a group of atoms joined together in a particular way
11. a process in which atoms rearrange to form new substances