write the difference between physical change and chemical change for class 7
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Explanation:
Physical changes only change the appearance of a substance, not its chemical composition. Chemical changes cause a substance to change into an entirely substance with a new chemical formula. Chemical changes are also known as chemical reactions.
Examples of Physical Changes You See Every Day
An ice cube melting into water in your drink.
Freezing water to make ice cubes.
Boiling water evaporating.
Hot shower water turning to steam.
Steam from the shower condensing on a mirror.
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