Explain the following:
Water pipes in colder countries often burst in winter.

Explain the following : Ethene is insoluble in water but soluble in alcohol

Explain the following: As a ship in harbour is being unloaded, it slowly rises higher in water.

Explain the following: In winter, water tank (or ocean) starts freezing from the surface and not the bottom.

Explain the following: Covalent compounds are insoluble in water.

Explain the following: An egg sinks in fresh water, but floats in a strong salt solution.

Comment upon the following: The urine is slightly thicker in summer than in winter.

Explain the following statement: "A glass bottle completely filled with water and tightly closed at room temperature is likely to burst when kept in the freezer of a refrigerator".