We will solve different types of questions given in the worksheet on matter and materials. We know, matter is anything that takes up space and has weight.
I. Mark a tick (√) or cross (X) against each given statement:
(i) Liquid flows.
(ii) A solid has a definite volume and shape.
(iii) Matter is anything that has weight and takes up space.
(iv) Molecules are tightly packed in a gas.
(v) All solids dissolve in water.
II. Write true or false of the following statement:
(i) Iron is harder than copper.
(ii) Polished wood is transparent.
(iii) Metals are good conductors of heat.
(iv) Copper is a good conductors of electricity.
(v) Potassium permanganate is soluble in water.
(vi) Solution is homogeneous.
(vii) All materials are soluble in water.
(viii) Air is soluble in water.
III. Choose the correct word to complete the following statements:
(i) Iron is _________ but _________ is soft. (plastic / hard / light)
(ii) Rubber is _________ conductor of electricity. (good / bad)
(iii) _________ allows light to pass through it. (wood / glass)
(iv) Carbon-di-oxide is _________ in water. (soluble / insoluble)
IV. Fill in the blanks:
(i) The amount of space a book takes up is called its _________.
(ii) A liquid has a definite _________ but no definite _________.
(iii) A solid changes into a liquid on _________.
(iv) In a solution of a solid in a liquid, the solid is called the _________.
(v) No more salt can dissolve in a _________ solution of salt in water.
V. Give five examples for each of the following substances that are:
(iii) Good conductor of heat
(iv) Soluble in water
Check the answers of worksheet on matter and materials:
I. (i) √
II. (i) true
III. (i) hard, plastic
IV. (i) volume
(ii) volume, shape
V. (i) marble, salt, alum, stone and glass
(ii) Glass-plate, air, polythene sheet, water and salt
(iii) copper, silver, gold, iron and aluminium
(iv) Sugar, salt, alum, blue vitriol and potassium-permanganate