Across
- 1. Calcium hydrogencarbonate -> Calcium Carbonate + Carbon Dioxide + _______.
- 4. Water that contains little or no hardness.
- 7. Calcium Carbonate is _______.
- 9. Calcium Hydrogencarbonate is ______.
- 11. Carbon Dioxide + Rainwater -> ______ acid.
Down
- 2. Rain water is slightly ______.
- 3. Hardness is caused by magnesium and _______ ions.
- 5. Calcium carbonate is commonly known as chalk, marble, or ________.
- 6. Temporary hardness can be removed by ________.
- 8. Magnesium ______ dissolves in water better than calcium ______.
- 10. Hard water makes _______.
- 12. Hardness is removed by ion exchange ______.