Across
- 1. gas becomes liquid
- 4. liquid becomes gas
- 6. part of an atom with a negative electrical charge
- 7. substance with a low pH
- 8. two substances that form a new substance together
- 9. part of an atom with a positive electrical charge
Down
- 1. two substances that remain separate when put together
- 2. object's resistance to any change in motion
- 3. substance with a high pH
- 5. part of an atom with no charge