Available Answers

1. 1.

   Fill in the blanks.

   1. _______ is the measure of quantity of matter contained in a substance.
   2. A ______ has a definite mass, shape and volume.
   3. There is no effect of forces of compression on the volume of a ______.
   4. Gases are highly _______.
   5. _______ is used as a clean fuel in vehicles.
2. 2.

   Fill in the blanks.

   1. It is important to understand the _______ in order to understand the world around us.
   2. The particles of matter move around in the ______ occupied by them.
   3. The shape and size of a solid can be changed on the application of an ________.
   4. A ______ takes up the shape of the container it is stroed in.
   5. A pure substance can be ________ or a _______.
3. 3.

   Identify the error in the given statements. Circle the incorrect word and write the correct word in the blank.

   1. Gases are rigid and hard.
   2. Due to the presence of more intermolecular space between the molecules of liquids, they possess high density than solids.
   3. CNG is used as a cooking gas in gas cylinder in kitchen.
   4. Water is an element.
   5. The particle theory of matter states that matter is made up of small compounds.
4. 4.

   Categorize the following objects as solid, liquid or gas and write in the given table.

   A piece of chalk, milk, hydrogen, nitrogen, a stone, water, kerosene, CNG , a pen, petrol, LPG juice, a table, oxygen, carbon dioxide, a box

   Solids

   Liquids

   Gas

    

5. 5.

   Match the columns.

   Column A	Column B
   1. Carbon dioxide	i. Noble gases
   2. Solids	ii. Low density
   3. Helium and argon	iii. Highly compressible
   4. Liquids	iv. Compound
   5. Gases	v. Strong interparticle forces

    

6. 6.

   Show the given text in form of the flowcharts.

   1. Three states of matter
   2. Particle theory in context to three states of matter