Across
- 2. basic unit for matter
- 4. anything that occupies space
- 8. 6.02*10^23
- 9. center of the atom
- 11. packed molecules
- 12. simplest part of a substance
- 13. no charge
- 14. made from 2+ elements
Down
- 1. first step
- 3. what comes out of a reaction?
- 5. compounds are formed or broken down
- 6. mixture of 2+ substances
- 7. relate to the charge
- 10. negative particle