what is a substance ?
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A substance is matter which has a specific composition and specific properties. Every pure element is a substance. ... Examples of non-substances: Salt water is not a substance. It is a mixture of two substances - sodium chloride and water.
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A substance is matter which has a specific composition and specific properties.
Every pure element is a substance. Every pure compound is a substance.
Examples of substances: Iron is an element and hence is also a substance. Methane is a compound and hence is also a substance.
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