Across
- 3. has a nucleus
- 4. changes changes affecting the form of a chemical substance, but not its chemical composition
- 6. a form of matter having constant chemical composition and characteristic properties
- 7. thing that makes up things
- 9. occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances
- 12. atoms don't move
- 13. atoms move but not a lot
- 14. property that is measurable, whose value physical-property describes a state of a physical system
Down
- 1. one of the smallest cells
- 2. has 2 or more cells in it
- 5. things in nature
- 8. atoms go everywhere
- 10. a substance made by mixing other substances together
- 11. so hot that the electrons are ripped away from the atoms forming an ionized gas