Question

33. Milk is not a pure substance although sugar is
a pure substance. Justify.​

Answer 1

Answer:

Milk is not a pure substance; it is considered a mixture because it does not occur naturally on its own. It is a mixture that combines mostly water, sugar, fat and proteins. Most substances found in the world are not pure substances but are a combination of various chemicals and compounds

Explanation:

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Answer 2

sugar and milk is not pure substance because pure substance are classified into elements and compounds .

elements are classified into metals ,nonmetals and metalloids

compound is a substance composed of two or more elements chemically combined in a fixed proportion

sugar and milk are mixtures

mixtures are classified into homogeneous and heterogeneous

sugar is a solution which is an homogeneous mixture

milk is colloidal which is and heterogeneous mixture