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hapter? How do we judge whether milk. ghee, butter. salt. spices, mineral water or juice that we buy from the market are pure? Fig. 2.1: Some consumable ttems and Soft drink a substance may cteris Therefore. When a sclenst sare water ust says that something is pure. that substance are the same in their chemical nature. A pure substance consists of a single type of particles. In other words, a substanceis a pure single form of matter. As we look around, we can see that most of the matter around us exist as mixtures of two or more pure components, for example, sea water, minerals, soil etc. are all mixtures. 2.1 What is a Mixture? Mixtures are constituted by more than one kind of pure form of matter, known as a substance. A substance cannot be separated into other kinds of matter by any physical process. We know that dissolved sodium chloride can be separated from water by the

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Updated on: Feb 24, 2023