Across
- 2. a substance that expands freely
- 4. a negatively charged part in the nucleus of an atom
- 7. a substance that takes up space
- 8. a mix of something
- 9. a degree of compactness of a substance
- 10. a firm and stable shape
Down
- 1. an invisible force or field caused by the unique properties of certain materials.
- 3. building block of life
- 5. a substance that flows freely and doesn't have a constant volume
- 6. a positively charged part in the nucleus of an atom