Question

(a) Tooth enamel is one of the hardest substances in our body. How does it
damage due to eating of chocolates and sweets? What should we do to
prevent it?
(b) What is meant by water of crystallisation in a substance? Give one
example.

Answer 1

remember that tooth is the hardest substance

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Answer 2

Answer:

it damages because the bacteria which are in our mouth they release acids after eating food which damages enamel

Water of crystallization is the fixed number of water molecules present in one formula unit of a salt. Or we can say water stoichiometrically bound into crystal. For example, chemical formula of hydrated copper sulphate is CuSO4 · 5H2O. Copper sulphate has 5 molecules of water of crystallisation.