Define physical change give five example …

Change in which only physical properties of a substance change and no new substance is formed is called Physical Change.
Examples of Physical changes:
1. Ice melting involves a change from a solid to a liquid and the substances maintain the properties of water because the molecules never change.
2. Water boiling is a physical change as water molecules vibrate faster, they enter the gas phase and become water vapor.
3. Rubbing alcohol left uncovered will evaporate quickly into the air. It turns to a gas but maintains the properties of alcohol.
4. Hot molten iron is a liquid and when left to cool will from solid steel and can take many forms.
5. Dissolving sugar in water is a physical change. The solid sugar never loses its properties, the molecules become separated by water and the sugar can easily be recovered by evaporating the water.