Class 7 Chemistry Physical and Chemical Changes Physical change

Physical change

Physical changes refer to the changes in the physical properties of the substances such as shape, size, colour and state. These changes are reversible in nature. In a physical change no new substance is formed.

Tearing a piece of paper changes its shape and size.

Similarly kneading of flour to dough changes its state.

Melting of ice is also a physical change where the matter is changing its state from solid to liquid.

 

Rolling of chapati/roti

Crushed can

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