‘It is very difficult to prove that the unknown substance is a pure substance’- Statement should be explained. Concept introduction: Pure substance: A sample of matter with both definite and constant composition with distinct chemical properties. Example of pure substances are, water diamond, gold etc. A mixture is a substance made by combining two or more different materials

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Chapter 1, Problem 1.103QP

Interpretation Introduction

Interpretation: ‘It is very difficult to prove that the unknown substance is a pure substance’- Statement should be explained.

Concept introduction:

Pure substance: A sample of matter with both definite and constant composition with distinct chemical properties. Example of pure substances are, water diamond, gold etc.

A mixture is a substance made by combining two or more different materials

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