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Reversible Changes

Contents

Key Stage 2

Meaning

A reversible change is a change which can be undone.

About Reversible Changes

In a reversible change you can get back the substance you started with.
A change that cannot be reversed is called irreversible.

Reversible changes you should know are:

Examples

Making shapes with playdough is a reversible process.
Once you squash playdough into a new shape you can squeeze it back into the original shape.
Melting and Freezing are reversible.
A solid will melt and become a liquid. You can then freeze it to become a solid again.
Condensing and Evaporating are reversible.
When a gas is condensed into a liquid you can always evaporate it back into a gas.