Question

How can pure substances be categorized? Give two characteristics of pure substances.
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Answer 1

Answer:

Pure substances are substances that are made up of only one kind of particles and has a fixed or constant structure. Pure substances are further classified as elements and compounds. An element is a substance that consists of only one type or kind of atom. ... Elements are mostly metals, non-metals or metalloids.

Explanation:

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Answer 2

Answer:

Pure substances are substances that are made up of only one kind of particles and has a fixed or constant structure. Pure substances are further classified as elements and compounds. ... Compounds, on the other hand, are also pure substances when two or more elements are combined chemically in a fixed ratio.