Classify the following substances into elements and compounds.

Mercury, sulphur, sugar, water, sand, gold, coal, oxygen, alcohol.

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Solution

An element is composed of only one kind of atom while compounds are made up of two or more type of atoms which are chemically combined with each other. Therefore, the given items can be classified as,

Elements:

Mercury, sulphur, gold, coal, oxygen.

Compounds:

Sugar, water, sand, alcohol.

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