Gas and Its Molecular Arrangement

Q.

A diver is able to cut through water in a swimming pool. Why property of matter food this observation shows?

Q.

Gases take the shape of the container in which they are present. Comment.

Q.

Write any two properties of gases.

Q.

Gases have a definite volume but no definite shape.

1. True
2. False

Q. Gases occupy the entire space of the container in which they are put in.

1. False
2. True

Q.

Match the following and choose the correct answer :-
(i) Solid (a) Super energetic particles
(ii) Liquid (b) No shape nor fixed volume at a given pressure
(iii) Gas (c) Has definite shape
(iv) Plasma (d) Definite shape with less molecular forces than
that in solids

1. (i) – a, (ii) – b, (iii) – c, (iv) – d

2. (i) – c, (ii) – d, (iii) – b, (iv) – a

3. (i) – c, (ii) – d, (iii) – a, (iv) – b

4. (i) – a, (ii) – d, (iii) – b, (iv) – c

Q.

What do you understand by gas?

Q.

Give a reason for the following.

Gases can flow in any direction.

Q.

Why do gases show a random motion by moving in all directions?

Q.

Molecules may lose or gain energy when they collide with other molecules.

1. True
2. False

Q.

Gases do not have any __________ surface.

Q.

Which physical state does not have a surface?

Q.

Gases have a fixed shape and definite volume.

1. True
2. False

Q.

Gases can have any number of free surfaces.

1. True
2. False

Q.

Define gas.

Q.

State true or false:

Gases are incompressible.

1. True
2. False

Q.

Gases have definite shape, but no definite volume.

1. True
2. False

Q.

Gases have no definite shape or volume. Explain.

Q.

All gases can flow.

1. True
2. False

Q.

Statement given below is incorrect. Write the correct statement.

The smallest intermolecular spaces are in case of gases.

Q.

Describe characteristics of gases in terms of compressibility.

Q.

Write true or false for the following statement:

The weakest intermolecular forces are in case of gases.

1. True
2. False

Q.

State properties of a gas.

Q.

Consider the following two situations, in which case the level of water (same volume) in the beaker will be higher?

Situation 1: Water in a beaker

Situation 2: Sponge in the water beaker

1. Situation 1

2. Situation 2

3. Sponge doesn't get wet by water

4. Volume of sponge will be same in both conditions

Q.

Define gas.

Q.

4. (a) What do you mean by a gas?

Q. have no definite shape and volume.

1. Gases
2. Solids
3. Liquids

Q. what is use of BEC state of matter

Q. Which amongst the following substances have the maximum random movement of particles in it?

1. Oxygen cylinder
2. Fresh juice
3. Wooden table
4. Iron nail