Question

Reversible change and inreversible change define

Answer 1

a change in which chemical properties of substance and results in formation new substance is called inreveresible change
a change in which physical properties are change is called reversible change

Answer 2

Reversible change -

A change in which matter can come back to its initial form.

They are temporary changes which can be reversed when the cause of change is removed.

Examples -

Freezing of water

Evaporation

Stretching of rubber

 

Irreversible change -

A change in which the substance cannot get its original form.

These are permanent changes which cannot be reversed even if the cause of the change is removed.

Examples -

Changing dough into a chappati

Getting older

Making curd