Across
- 4. Negatively charged subatomic atom
- 7. Impure substance
- 9. Number of protons and neutrons in an atom
- 10. 2 or more elements bonded together
- 11. Not charged subatomic atom
- 12. 2 or more atoms bonded together
- 13. Mass compared to relative things
Down
- 1. A pure substance that contains only 1 type of atom
- 2. Pure substance
- 3. Smallest part of an element
- 5. An impure substance
- 6. Number of protons in an atom
- 8. Positively charged subatomic atom