an element is a substance which cannot be spilt upto two or more simple substances.For eg gold,silver
a compound is the substance produced by the union of two or more elements in a definite proportion by weight .For eg water,carbon dioxide
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A mixture is a substance formed by mixing two or more elements are compounds in any proportion by mass .Its types are:Hetregeneous mixture and homogeneous mixture.
the difference between mixture and compound is that a mixture is a substance formed by mixing two or more elements are compounds in any proportion by maths and compound is a substance produced by the union of two or more elements in a definite proportion by weight.
chemical equation is defined as the symbolic representation of a chemical reaction