Across
- 3. Newton's first law of motion
- 4. are used to balance chemical equations
- 6. a force of attraction between two things that have mass
- 9. a very reactive gas
- 11. force that opposes motion
Down
- 1. a substance that increases the rate of a chemical reaction
- 2. a change in speed or direction of an object
- 5. push or pull acting on an object
- 7. metals are the elements in groups 3-12 in the periodic table
- 8. the SI unit for weight
- 10. gases that are nonreactive,nonmetallic and in group 18 of the periodic table