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InterviewSolution
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iestions1. What is meant by a substance?2. List the points of differencesbetieeen homogeneous anddheterogeneous mixtures. |
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Answer» A substance ismatterwhich has a specific composition and specific properties. Every pure element is a substance. Every pure compound is a substance. Examples of substances:Ironis an element and hence is also a substance. Methane is a compound and hence is also a substance. A homogeneous mixture is a mixture having a uniform composition throughout themixture. For example: salt in water, sugar in water, copper sulphate in waterA heterogeneous mixture is a mixture having a non-uniform composition throughoutthe mixture. For example: sodium chloride and iron fillings, salt and sulphur, oil andwater. |
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