Across
- 4. A small particle with a negative charge that is found in all atoms.
- 8. the smallest part of an element
- 11. gold
- 15. anything that takes up space
- 16. the amount of space that an object tacks up
- 19. holds all the elements
- 20. mixture that can't be separated easily
- 22. structure in a cell that contains the chromosomes
Down
- 1. an instrument used to measure volume
- 2. an instrument used to measure mass
- 3. mass divided by volume
- 5. water
- 6. helium, and oxygen are what.
- 7. O2
- 9. can be separated easily
- 10. element number c
- 12. two or more elements put together
- 13. the particles vibrate in place
- 14. a subatomic particle with a positive electrical charge
- 17. how is an element weighed
- 18. one of the three subatomic particles that make up an atom
- 21. the particles move slowly