Why are elements and compounds pure substances?
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Elements and compounds are both pure substances because they cannot be split apart by physical or mechanical methods. Some examples of elements are nickel, carbon and oxygen, while some examples of compounds are water and sodium chloride. read more
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Pure substances, on the other hand, are joined chemically . Water , a compound, is composed of two different elements, an oxygen chemically bonded to two hydrogen atoms. Elements are also classified as pure substances since they are made of only one type of atom. read more
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