Question

what is a pure substance

Answer 1

A pure substance or chemical substance is a material that has a constant composition (is homogeneous) and has consistent properties throughout the sample. ... Examples of pure substances include tin, sulfur, diamond, water, pure sugar (sucrose), table salt (sodium chloride) and baking soda (sodium bicarbonate).

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Answer 2

a pure substance is a sample of matter with both definite and constant composition and distinct chemical properties. To avoid confusion, a pure substance is often referred to as a "chemical substance