softening of hard water is a physical or a chemical change?
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I think it can be both but please check before writing
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Removal of temporary hardness of water is an example of physical change removal of permanent hardness of water is an example of chemical change.
Explanation:
- Hardness of water is due to the presence of soluble salts of calcium and magnesium
- as a result of this there is formation of scum when water is mixed with soap.
- Temporary hardness of water involves the boiling of water filter where is in place of permanent hardness of water it is removed by making it react with certain Chemicals.
- As a result of the chemical composition of the substance is changed and hence it is a chemical change
to know more about hardness of water,
explain the use of washing soda in softening Water? - Brainly.in
https://brainly.in/question/3701757
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