Question

C) Classify the following into elements, compounds and mixture.
Sugar, sodium, nitrogen, sodium carbonate, air, sulphuric acid,
mercury, stainless steel, cement, potassium dichromate.​

Answer 1

Answer:

The molecules of a gas move apart when they collide. The average kinetic energy of the particles in a liquid (or solid) is small enough that the forces of attraction between them is sufficient to hold the particles close together. The molecules in a liquid (or solid) do not move apart

Answer 2

Elements - sodium,nitrogen,mercury

Compound - sodium carbonate, sulphuric acid, potassium dichromate,sugar

Mixture - air, Stainless Steel, cement