Grade-3 Science, Term-2 Chapter-3 Properties of Water


Chapter - 3
Topic:  Properties of Water

Fill in the blanks with suitable word: 
(space, odourless, shape, matter. rain)
     1.    Water is a matter.
     2.    Water takes the shape of container when it is poured into it.
     3.    Rain is the purest form of water.
     4.    Water occupies space.
     5.    Water is colourless and odourless.

 State whether the following statements are true or false:
    1.    More than two-third of our body is made up of water. True
    2.    Water is found in river, ponds and lakes. True
    3.    Living things can live without water. False
    4.    Water has a definite shape. False
    5.    Heating decreases the rate of mixing in a water solution. False

 Sate whether these substances are soluble or insoluble in water:
1-  Salt       (Soluble)
2-  Sugar    (Soluble)
3-  Sand     (Insoluble)
4-  Fats       (Insoluble)
5-  Ink        (Soluble)
6-  Vinegar (Soluble)
7-  Wood   (Insoluble)
8-  Metal    (Insoluble)
9-  Plastic   (Insoluble)
10-     Glass (Insoluble)

Answer these questions:
         Q1.     List the uses of water that you know?
Ans-  Following are the uses of water:
1-  Washing utensils
2-  Taking bath
3-  Drinking
4-  Cooking
5-  Gardening
6-  Washing clothes
7-  Moping floor
8-  Use in industries
9-  Use in agriculture
10-   Washing car

         Q2.     Write any two properties of water.
Ans- Following are two properties of water:
a.    Water is colourless
b.    Water is odourless

         Q3.     Why does a tiny stone sink in water?
Ans-  Tiny stones sinks in the water because the area that is in contact with water is smaller when compared to the weight of the stone.

         Q4.     What is a water solution?
Ans- Water solution is a product when a substance gets completely or partially mixed in water.

         Q5.     Write two conditions that affect the making of water solution.
Ans- Following are the two conditions that affect the making of water solution:
                 i.  Stirring- Stirring increases the rate of mixing
                ii.  Heating- Heating increases the rate of mixing       


Q6.     Does soap from water solution when put in water?
Ans- Yes, soap forms water solution when it is put in water.

Q7.     Do you think a leaf will float in water? Why?
     Ans- Yes, a leaf will float in water as it is lighter than water.

Q8.     Water exerts push. Explain with example.
Ans- Water pushes anything that obstructs its path while flowing. For example: water can move the sand on the beach.

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