Across
- 4. high ph
- 8. separating water from salt
- 11. heating components to separate liquids
- 13. neutral charge
Down
- 1. positive charge
- 2. negative charge
- 3. enhanced greenhouse effect
- 5. low ph
- 6. liquids reaching boiling temperature
- 7. using green house gases to heat the earth
- 9. high concentration to a low concentration
- 10. particles staying together
- 12. 7ph