State the characteristics of physical changes.

The characteristics of a physical change can be summarized as follows :

1. No new substance is formed.
2. There is no change in the chemical composition of the original substance.
3. The change is temporary and it can be reversed by reversing the conditions.
4. The change is only in the state, size, shape, colour, texture or the smell of some or all of the substances that undergo physical change.
5. There is no change in the mass of the substances involved in a physical change.
6. There is usually no loss or gain of energy as a result of physical change.