Across
- 2. the simplest form of matter is a
- 6. anything must have this and volume
- 7. what is everything made up of?
- 8. firm and stable shape
- 9. negatively charged particle
Down
- 1. positively charged particle
- 3. flows freely and but fills shape of container
- 4. negatively charged particle
- 5. expands freely in its container
- 6. must have mass and volume