C3 water revision

3. Hard water which is softened when it is boiled.
6. The soluble compund found in temporary hard water
9. Boiling temporary hard water is not done because it is too
11. The types of compounds found in permanent hard water
12. Water containing no dissolved calcium and/or magnesium salts, so it easily forms a lather with soap.
14. Pure water contains non of these
16. The other ion responsible for hard water
17. This part of a home water filter is used to reduce the chlorine levels
21. This is a method of producing pure water
22. Hard water whose calcium and/or magnesium ions are not removed when the water is boiled, thus remaining hard

1. This is easily formed when soft water is used with soap
2. This is when a solid is formed from soluble compounds
4. A cleaning agent that does not produce scum when used with hard water
5. This is formed when hard water is heated
6. Added to water to rid it of microbes
7. A water softener which works by replacing calcium and magnesium ions with sodium or hydrogen ions, removing the hardness
8. The chemical process undergone by the compounds in temporary hard water to make it soft
10. This is formed when hard water reacts with soap
13. Added to water to help with tooth decay
15. Electrical items cam be made to be less ____ due to hard water
18. One of the ions found in hard water that is good for our teeth and bones
19. Water in which it is difficult to form a lather with soap. It contains calcium and/or magnesium ions which react with soap to produce scum.
20. This part of a home water filter is antibacterial