following substance acts as a pure substance
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Properties of Pure Substances Pure Substance Phases of a Pure ... A substance that has a fixed chemical composition throughout is called a pure substance such as water, air, and nitrogen. A pure substance does not have to be of a single element or compound.
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Pure water always consists of two hydrogen and one oxygen atom. These atoms are chemically bonded to each other. Also pure gold consists of gold atoms only. Table salt (sodium chloride) cannot be separated by physical means and has a constant chemical composition. Hence, all the above examples are pure substances.
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