Question

what are pure substances​

Answer 1

A chemical substance is a form of matter having constant chemical composition and characteristic properties. Some references add that chemical substance cannot be separated into its constituent elements by physical separation methods, i.e., without breaking chemical bonds.

Answer 2

Answer:

Characteristics and Properties Of Pure Substances

Pure substances are mostly homogeneous in nature containing only one type of atoms or molecules.

These substances mainly have a constant or uniform composition throughout.

The substances have fixed boiling and melting points.

A pure substance usually participates in a chemical reaction to form predictable products.