Sort the given objects as rough or smooth. Wet soap Coir Feather Stone Glass ball Paperboard Sand paper Plastic spoon

Sort the given objects as rough or smooth.

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Chapter 2: Matter and Materials - Try to Answer [Page 97]

Chapter 2 Matter and Materials
Try to Answer | Q 4 | Page 97

Materials which can be bent or stretched easily are called ______.

Look at the pictures and identify the materials by which they are made of:

(paper, clay, glass, wood, plastic, metal rubber, wax

When can you say a material is waterproof material?

Sand settles down in the water.

Choose the odd one:

Materials which have ups and downs on their surface are called ______.

Match the substances in Column A with their applications given in Column B.

Column A (Substance)	Column B (Application)
(a) oxygen	(i) for making crackers
(b) copper	(ii) for disinfecting water
(c) sulphur	(iii) all living beings inhale during breathing
(d) iron	(iv) for making electric wires
(e) chlorine	(v) for making rails

Which pair of substances among the following would float in a tumbler half filled with water?

Which of the following statements is not true?

Why do you think oxygen dissolved in water is important for the survival of aquatic animals and plants?