Question

What is pure substance ?

Answer 1

Pure substances are defined as substances that are made of only one type of atom or only one type of molecule (a group of atoms bonded together).

So, atoms and molecules are pure substances.

The main characteristic feature of pure substance is that it cannot be seperated to smaller components using physical means.

A chemical substance, also known as a pure substance, is a form of matter that consists of molecules of the same composition and structure. It cannot be separated into components by physical separation methods, i.e., without breaking chemical bonds.