Water as Solvent

Why does groundwater contain less impurities than surface water?

The solubility of a gas in water depends on temperature.

Mention the factors on which the solubility of gases in water depends.

ORS is a mixture of Salt and _____.

Substances that are completely disappearing or dissolve in water are called _____ substances in water.

Which of the following are a type of physical change.

Which of the following is a physical change.
 

Is sugar dissolving in water a physical change or chemical change?

Changes in which only _____ properties of a substance change are called physical changes.

Choose the correct word from the brackets and fill in the blank:

[Oral Rehydration Solution, boiled lime, salad, boiled water]

When the water content in the body is lost, _____ must be given to the person to get back the lost water.

What is added to water to prepare ORS?

Unscramble the following word to make meaningful word:
NVOSLET

How do aquatic animals get oxygen to breathe?

Take beakers of the same size completely filled with water. Add some sugar powder of equal to the weight of the three marbles in one beaker. Did you find any difference in the water level? Observe and write.

Solubility of most solids increases with increase of heat.

_____ is a universal solvent.

The liquid in which the solid is mixed to make a solution is called the _____.

The liquid in which the solute dissolves (Solution / Solvent)

Choose the right word and fill in the blank:

Substances which do not dissolve in a liquid are _____ (insoluble/miscible) in it.

Describe the classification of materials based on their solubility.