Page 92 - Viva ICSE Science 4 : E-book

D. Match the following.

Column A Column B

1. Solute (a) Do not dissolve in water
2. Solvent (b) Liquids that do not mix together

3. Solubility (c) A substance that gets dissolved

4. Insoluble substances (d) The ability of a substance to
dissolve

5. Immiscible liquids (e) The substance in which the

solute gets dissolved

E. Answer the following questions.

1. Defi ne the terms solute, solvent and solution. Explain with an example.

2. What are soluble and insoluble substances? Give examples.

3. What are miscible and immiscible liquids? Give one example of each.

4. Diff erentiate between evaporation and fi ltration.

5. Why is water called a ‘universal solvent’?

6. Explain the process of sedimentation and decantation.

THINK AND ANSWER

1. Can you see any impurities in tap water? If no, then why do we fi lter it before drinking?
2. You have a solution containing salt, sand and water. Can you separate all three
substances? If yes, then how?

TALK ABOUT

Separation of substances is a useful process in our day-to-day life. Discuss.

LINK AND LEARN

Find out about any five types of solutions your mother makes while cooking food in the kitchen.
Make a small report. Mention the soluble and insoluble substances in the diff erent solutions.

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