Question

Why is Breaking of glass a physical change, though it is irreversible?

Answer 1

Explanation:

Glass broken is physical change because no new substance is formed. It is irreversible physical change

Answer 2

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It is irreversible physical change. Answer: When a glass bottle breaks no new substance with different chemical properties is formed but when a matchsick burns light ,heat some amount of carbondioxide gas and ash are formed.In both the changes you cannot obtain the original substance.