Question

What are pure substances?​

Answer 1

Answer:

All the elements and compounds are pure substances because they contain only one kind of particles. For Example: Hydrogen,Oxygen,Nitrogen,Chlorine,Iodine,carbon,Iron,Copper etc are pure substances(elements). Water, sodium chloride, Hydrochloric acid,Camphor etc. are pure substances (compounds)

Answer 2

Answer:

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