Question

1. what is hard water.

2. Mention four sources of water.
3. write down the chemical formula of water.
4. What is purification of water.
5. Mention two importance of purification of water.
6. Mention 4 method used ot purify water. 7. Mention 4 impurities found in water.
8. Explain the term contaminated of water.
9. State two physical properties of water. 10. mention the names of of the elements that causes hardness in water.​

Answer 1

Step-by-step explanation:

1. Hard water is a type of water that can not easily lather with soap.
2. Springs, wells, pipe-borne
3. H20. The 2 is in base
4. Purification of water is the cleansing of water to avoid diseases, germs, bacteria.
5. To prevent diseases, to make the water safe for drinking
6. Boiling,chlorination, distillation
7. Sorry about number seven!
8. This is when water is unsafe or dirty, it cannot be used for the purpose for which it is intended
9. Water is tasteless, water is colourless
10. Calcium tetraoxosulphate(vi), Magnesium tetraoxo sulphate (vi) and Calcium hydrogen trioxocarbonate