Question

we can't rejoin the broken chalk easily give reason​

Answer 1

Answer:

When it is broken, it breaks the chemical change and chemical change cannot be reversed. So, it does not rejoin anymore. The chalk is broken so it is made up of calcium carbonate and chemical changes may be changed. It does not rejoin.

Explanation:

hope it's helpful

Answer 2

When its broken ,it breaks the chemical change and chemical change cannot be reversed .

so we can't rejoin the broken chalk.