Question

1. We can't rejoin the broken chalk easily. Give reason.
(AS)​

Answer 1

Answer:

The chalks are made up of calcium carbonate. When it is broken, it breaks the chemical change and chemical change cannot be reversed. So, it does not rejoin anymore.

Answer 2

Explanation:

It is easy to break but we can't join.

To join two materials we need to let the molecules of two get near enough for the coulomb forces to start acting.