Question
Classify the following as pure substances or mixtures: air, milk, graphite, diamond, gasoline, tap water, distilled water, oxygen, one rupee coin, 22 carat gold, steel, iron, sodium chloride, iodized table salt.
Solution
Pure substances: Graphite, Diamond, Distilled water, Oxygen, Iron, Sodium chloride,22 carat gold.
Mixtures : Air, Milk, Gasoline, Tap water, One rupee coin, Steel, Iodised table salt.
