Access Answers to NCERT Class 9 Science Chapter 2: Is Matter Around Us Pure (All in text and Exercise Questions solved)
Exercise-2.1 Page: 15 ( Is Matter Around Us Pure
1. What is meant by a substance?
It is a pure single form of matter. A substance has definite properties and compositions. Example – Iron
2. List the points of differences between homogeneous and heterogeneous mixtures.
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