Two reasons to prove that water is a compound and not an element are:
● Water comprises of 2 parts of hydrogen and one part of oxygen and they combine chemically. Thus water is a compound which is made up of two elements and its properties are completely different from its constituents.
2H2 + O2 = 2H2O
● The constituents of the water cannot be separated physically and need chemical methods to separate its constituents.
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