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Explain why elements and compounds are pure substances while a homogeneous mixture is not?
Wiki User
∙ 12y ago
Wiki User
∙ 12y agoWell, elements and compounds are pure substances. This is because the atoms in an elements are of one type only. Thus making it pure. But in a compound, the ratio of the masses of the combining elements or compounds are fixed. For example, the ratio for hydrogen and oxygen to combine together to form water is 1:8. Therefore the compound is also a pure substance. But homogenous mixtures are not pure substances as the components can be mixed in any ratio. We can make brine solution by mixing any amount of salt and water. There is no fixed ratio. So homogenous mixtures are not pure.
Wiki User
∙ 11y agoThe atoms shown in an Atomic Mass, formula mass, and/or molecular mass of elements and pure compounds can not be separated from one another without breaking chemical bonds, while at least some of the atoms shown in a complete characterization of a mixture can be so separated with breaking chemical bonds.
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