Water as a Wonder Liquid

Can you think of some solids that do not dissolve in water?

Observe the picture carefully and answer the following question.

Which of the solids in the mixtures are soluble?

How do we know if a solid has dissolved?

Can all solids dissolve in water?

Observe the picture carefully and answer the following question.

When you make jelly, you mix the jelly powder with water to make a solution.

What has happened to the jelly powder?

Draw pictures showing any two ways of cleaning the water.

Do oil and sand dissolve in water?

Does the colour of the water always change?

Do all the things dissolve in water?

Demonstrate the simple method of water purification and separation of salt from saline water.

Do you notice any change in the colour of polluted water?

Have you ever seen dead fish floating in rivers and lakes?

Are some animals also facing problems due to what we do to rivers and lakes?

Do you find people dumping garbage in rivers or lakes?

What are the different ways of cleaning water at home?

Bathing animals in a lake will make the water of the lake dirty.

Cleaning utensils in the tank will make the tank water dirty.

Bathing in a pond will make the pond water dirty.

Washing clothes in a tank will make the water of the tank dirty.

How do you clean drinking water at home?