Question

give example of why elements and compounds are pure substance​

Answer 1

Answer:

An element is a pure substance as it cannot be broken down or transformed into a new substance even by using some physical or chemical means. Elements are mostly metals, non-metals or metalloids. Compounds, on the other hand, are also pure substances when two or more elements are combined chemically in a fixed ratio.

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Answer 2

Answer:

the substance that cannot be broken down into chemically simple components.