DAV Class 5 Science Solution | Chapter 8 Properties Of Water

DAV CLASS 5 Science Solutions: We have discussed the solution of class 5 Science book chapter 8 solutions are given below with proper Explanation please bookmark our website for further updates.

Chapter 8 Properties of Water DAV Class 5 Science Solution

SOMETHING TO KNOW

A. Fill in the blanks.

1. A substance which dissolves completely in a liquid is said to be soluble in it.

2. The substance, that dissolves in a medium to form a solution, is known as the solute.

3. Mustard oil is insoluble in water.

4. Aquatic animals breathe the oxygen gas dissolved in water.

5. Change of a liquid into its vapour form is called vapourisation.

6. Condensation is the process of change of vapours into liquid.

B. Write True or False for the following statements.

1. Sugar and salt are soluble in water.	Answer: True
2. Hair oil is insoluble in water.	True
3. Pebbles float on water.	False
4. Sand sinks in water.	True
5. Water vapours can be changed into liquid water by heating.	False

C. Tick (✓) the correct option.

1. In a solution of sugar and water- (a) water is the solute (b) sugar is the solvent (c) both water and sugar are solutes (d) water is the solvent

Ans. 1. (d) water is the solvent

2. When sand is mixed with water, it- (a) dissolves and floats on water (b) does dissolve but floats on water (c) does not dissolve but sinks in water (d) dissolves and sinks in water

Ans 2. (c) does not dissolve but sinks in water

3. Wet clothes get dried due to- (a) water cycle (b) evaporation (c) respiration (d) condensation

Ans 3. (b) evaporation

4. Mixture of sugar, salt and lemon juice in water is a- (a) solution (b) solvent (c) solute (d) floating mixture

Ans 4. (a) solution.

D. Answer the following questions in brief.

1. Define a solution.

Ans 1. A mixture in which one substance is completely dissolved in another substance is called a solution.

2. What is a solvent?

Ans 2. A medium in which a substance is dissolved is called a solvent.

3. Name two substances that are soluble in water.

Ans 3. Salt and sugar

4. Name two substances that are insoluble in water.

Ans 4. Sand and chalk

5. Write the names of four substances that float on water.

Ans 5. Cork, wood, paper, rubber

6. Name the three forms of water.

Ans 6. Ice, water and vapour

E. Answer the following questions.

1. Give two examples each of:

(a) liquids which dissolve in water.

Ans 1(a). Vinegar and lemon juice

(b) liquids which are insoluble in water.

Ans 1(b). Kerosene oil and mustard oil

(c) solids which float on water.

Ans 1(c). Cork and wood

(d) solids which sink in water.

Ans 1(d). Iron and stone

2. What do we understand by the terms ‘evaporation’ and ‘condensation’?

Ans 2. The conversion of liquid into vapour at all temperatures is called evaporation. The conversion of vapour into liquid is called condensation.

3. How are clouds formed?

Ans 3. Water from oceans, seas, rivers and lakes keep on changing into vapour because of heat from the sun. The vapour rises up in the sky. When the water vapour goes very high in the sky, it forms clouds because of condensation.

4. How does rain water get impure?

Ans 4. Raindrops are the purest form of water. But while reaching the earth, impurities get mixed with raindrops. Thus, rainwater gets impure.

5. Draw a diagram showing the water cycle.

Ans 5.