Sugar crystals do not dissolve easily in ice cold water. Explain.

Deep water runs slow. Explain.

Purple cabbage leaves do not loose their colour in cold water but they do so in boiling water because ..............

Solute when dissolved in water:

When common salt is dissolved in water

Cut pieces of beetroot do not leave colour in cold water but do so in hot water. Explain.

What are metallic crystals? Explain.

Apparatus: A beaker, potassium permaganate crystals, a burner, water, etc. : Procedure: Take some water in a beaker. Heat the beaker slowly on a gas burner. Drop a few crystals of potassium permaganate into the water. Now watch the water in the beaker carefully. What do you see?

Why does Naphthalene dissolves in benzene but not in water.

State whether the following statement are True or False. Explain your statement : When water is mixed with natural or artificial unwanted materials, the dissolved oxygen level of such water increases.

2 mole of ethanol is dissolved in 8 mole of water. The mole fraction of water in the solution is