Across
- 4. The number of protons in an atom
- 5. A negative ion is known as?
- 6. loose electrons during a chemical reaction
- 8. the smallest unit of matter?
- 10. Electrons orbit the nucleus of an atom in?
Down
- 1. stable subatomic particle with a charge of negative electricity
- 2. horizontal rows
- 3. A positive ion known as?
- 7. the number of neutrons and protons in the nucleus of an atom
- 9. Vertical columns