Across
- 4. number of protons in the nucleus of an atom
- 5. a temperature at which a substance will melt
- 8. stable in shape
- 9. how compact a substance was
- 10. a state of matter that has to fixed shape
- 12. a physical substance that takes up space
Down
- 1. a subatomic particle
- 2. a set of element in an entire horizontal row
- 3. substance that flows freely but has a constant volume
- 6. how acidic a basic solution
- 7. a substance that does not readily conduct electricity
- 11. basic unit of life