Matter and Changes Around Us
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Matter is anything that has mass, occupies space, and possesses inertia.
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Matter undergoes changes continuously. Examples include melting of ice, souring of milk, rusting of iron, stretching of rubber, burning of fuel, and cooking of food.
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A change may affect only the physical properties of a substance or may produce one or more substances with a new chemical composition.
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Changes are broadly classified into:
- Physical changes
- Chemical changes