Name the salts that cause the hardness of the water.

How is temporary hardness of water removed?

Write one advantage of using hard water.

Water is a _____ conductor of electricity. (poor / good)

Water is called a _____ solvent. (non-polar / universal)

_____ hardness can be removed by boiling. (permanent / temporary)

The water that does not lather readily with a soap is called _____ water.

Main source of groundwater is: (Rain / Ocean)

A chemical used to remove permanent hardness is: (Baking soda / Washing soda)