Water Crossword

2. One of the final stages of water treatment, involving the neutralisation of pathogens.
3. Calcium carbonate deposits stuck in equipment.
7. A method of gaining fresh water, used in dry, coastal areas, requiring reverse osmosis equipment or distillation.
10. A white mineral responsible for permanent hardness. Is also named carbon sulphate.
12. Baking ___ the third and final method of removing hardness from water.
16. The stage of water treatment where large, insoluble particles are removed.
17. Stage where small, insoluble particles are removed.
18. Another alkaline earth metal that burns orange, also makes water hard.
19. Formed when hard water reacts with soap.
20. ___ Condenser. Straight glass tube. Named for the "father of organic chemistry"
21. A property of rock particles removed during filtration and sedimentation.

1. Method of water purification through evaporation and condensation.
4. Water containing little magnesium or calcium. Does not form limescale and scum.
5. One method of softening water,involving the exchange of calcium and magnesium for sodium.
6. The term for water being treated in order to improve dental health.
8. Term for a shortage of rainfall.
9. Another method of softening water, involving temperature increase of a water sample.
11. Alkaline earth metal that burns white, makes water hard.
13. A term for underground water deposits.
14. Term for water containing salt.
15. Main use of water across the world. Term for food production.
20. A water pollutant, usually found in polluted rivers next to industrial zones. Can cause brain damage if ingested.