Across
- 2. particles always touching but able to move
- 3. an amount of weight
- 5. has a big black cross to warn you
- 7. the warning symbol is a flame
- 10. is a black solid
- 13. a neutral charge in the middle of the nucleus
- 14. the warning symbol is a big skull and crossbones
- 15. this particle has a lot of kinetic energy
Down
- 1. an alkali begging with L and finishing with m
- 4. an acid starting with s and finishing with c
- 6. a negative charge in the middle of the nucleus
- 8. its a miniature building block
- 9. its a positive charge found in the middle of the nucleus
- 11. mass divided by volume
- 12. liquids are measured in it