Give scientific reasons:
Soap forms a precipitate in hard water.

Give scientific reasons: Air is a mixture

Give scientific reasons: Water is a compound

Give scientific reasons : Water is life.

Give scientific reasons: Milk is a colloid.

Give scientific reasons: Hydrogen is an element.

Give scientific reasons: Sodium is always kept in kerosene

Give scientific reasons: In winter, the pipelines carrying water burst in cold countries .

Give scientific reasons : Carbon atoms are capable of forming an unlimited number of compounds.

Give scientific reasons Stars appear to be twinkling at night.