Question

Glass broken is physical change. but it is not reversible why?​

Answer 1

Explanation:

Glass broken is physical change because no new substance is formed. It is not reversible. It is irreversible physical change.

Answer 2

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.Hence breaking of glass is a physical irreversible change while burning of a ...