Question

all pure substances are homogeneous in nature ? justify
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Answer 1

Answer:

No, because there are many types of gases in our nature ( have different valencies and atoms)

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Answer 2

Answer:

All pure substances are said to be homogeneous but not all homogeneous mixtures are pure. A pure substance is made up of a single element or compound and has a definite composition. For example, water is a pure substance which is made up of molecules.