Chemical Reaction

3. an object, diagram, or computer program that helps us understand something by making it simpler or easier to see
4. a group of atoms joined together in a particular way
6. something that can be observed about a substance, such as color, smell, or boiling point
9. the relative size of things
12. able to cause damage
14. to change the order or position of something
16. a substance that is added to soil to help plants grow

1. an ending substance that is made during a chemical reaction
2. a process in which atoms rearrange to form new substances
5. a structure formed by repeating groups of atoms linked together in a large network
7. something that is made of all the same atoms or groups of atoms
8. letters and numbers showing the types and number of atoms that repeat to make up a substance
10. the temperature at which a substance changes from the solid phase to the liquid phase
11. the tiny pieces that all matter
13. the temperature at which a substance changes from the liquid phase to the gas phase
15. a starting substance that is part of a chemical reaction