Across
- 3. smallest unit of matter
- 4. the amount of protons and neutrons in an atom
- 7. one of the the four states of matter that vibrates in place, but not has a defined shape
- 8. a particle with an positive charge
- 9. Something with mass and volume
- 10. the positive electrical charge
Down
- 1. the number of protons in the nucleus
- 2. a type of matter with tiny particles that move everywhere
- 5. a particle with an negative charge
- 6. if matter were to be broken down