India Languages, asked by Vishwajeet5094, 7 months ago

Scum formation chapter 4

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Answered by Edhaliniyazh

Answer:

When a soap is used in hard water, a solid substance we call scum forms. This is because charged calcium and magnesium particles (called ions ) present in the water react with soap to form an insoluble substance. Scum builds up on clothes, baths and sinks.

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