Across
- 1. state of matter that takes the shape of its container
- 7. state of matter with no definite shape or volume
- 9. subatomic particle with a negative charge
- 10. the center of an atom, made of protons and neutrons
- 11. smallest form of a chemical element
Down
- 2. molecule that has gained or lost electrons
- 3. the amount of mass per volume
- 4. subatomic particle with no charge
- 5. subatomic particle with a positive charge
- 6. number number of protons in an element
- 8. state of matter similar to gas
- 12. the amount of matter in an object