Question

why can a chalk peice be broken easily into smaller pieces while a coal piece cannot be broken easily ​

Answer 1

This is because coal is harder than chalk

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Answer 2

Answer:

This force keeps the particles together

the strength of this force of attraction is

lesser in chalk , Hence it could be broken easily into smaller pieces . But the strength

after intermolecular force of attraction is very strong in coal . Therefore it is not possible to break them into small pieces .

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