Question

Pure substance are of two types:- Element and Compound. In Compound there are two substance then how it is said that it is pure?

Answer 1

Compound is called a pure substance because compound is made up of two or more different types of atoms which are bonded chemically

Answer 2

a pure substance is one which is made up of only one kind of particle . a pure substance is homogeneous throughout its mass. a pure substance cannot be separated into other kind of matter by and physical process.

types of pure substance .

element ,
compound , etc.

examples :-

gold ,
sugar,
silver,
salt,
platinum, etc.