Across
- 1. The particles in a atom that are positively charged
- 3. Pure
- 7. The particles in a atom that are negative charge
- 8. 2 or more elements chemically combined
- 9. a pure substance that only contains one type of atom
Down
- 2. The particles in a atom that have a neutral charge
- 4. smallest pert of a compound
- 5. Smallest Part of an element
- 6. Number of protons