Interconversion of States of Matter

Q.

Why solid, liquid and gas have different properties?

Q.

When water is heated, it gets converted into steam by a process called A. When steam is cooled, it is again converted into water by a process called B. Identify A and B.

1. A:- Melting

   B:- Condensation

2. A:- Vapourisation

   B:- Condensation

3. A:- Condensation

   B:- Vapourisation

4. A:- Vapourisation

   B:- Solidification

Q.

The intermixing of particles of two different substances on their own is called________________.

1. vaporisation

2. diffusion

3. intermingling

4. sublimation

Q.

What determines the state of matter of a substance at a given temperature?

Q.

Mention the changes that take place when a solid is heated.

Q.

The process of conversion of liquids into solids upon cooling is called_______ (sublimation/freezing)

Q. Liquid carbon dioxide is called dry ice.

1. False
2. True

Q.

Explain in detail how does the competition between inter molecular forces of attraction among the constituent particles and their kinetic energy affect the physical state of matter.

Q. Which among the following represents the correct increasing order of intermolecular distance between their particles.

1. Gas < liquid < solid
2. Solid < liquid < gas
3. Solid < gas < liquid
4. Liquid < gas < solid

Q.

The process by which matter in solid state changes to gaseous state, due to an increase in temperature is called as ___________ and reverse of this (gaseous state to solid state), due to a decrease in temperature is called as_________.

1. Diffusion

2. Evaporation

3. Condensation

4. Sublimation

Q.

When water solidifies to ice, then heat is

1. A) absorbed

2. B) evolved

3. C) heat may be evolved or absorbed

4. D) no change in heat

Q. Define the following terms:
(a) Vaporisation
(b) Condensation
(c) Sublimation

Q.

What is sublimation? Give examples

Q.

In which of the following processes does a change in state involve absorption of heat?
A. Freezing
B. Sublimation
C. Condensation
D. Melting

1. B and C

2. A and B

3. B and D

4. A, B and C

Q.

Rohan asked for a glass of water from Sunil. He gave him a glass of cold water. Rohan observed some water droplets on the outer surface of the glass and asked Sunil the reason for this. Which of the below-mentioned will be Sunil's answer?

1. Evaporation of atmospheric water vapour

2. Evaporation of water from the glass

3. Condensation of atmospheric water vapour

4. Water that seeped out from the glass.

Q.

During phase change from solid to liquid and liquid to gas the interparticle distance ______.

1. first increase and then decrease

2. remain same

3. increase

4. decrease

Q.

Kinetic energy of molecules is very high in ____________ state of matter.

Q.

Define the following term:

Evaporation

Q.

Identify the process 'X', from the below image.

1. Sublimation

2. Melting

3. Reverse sublimation

4. Condensation

Q.

In which physical state does water exists:

1. 100°C.
2. 0°C.

Q.

Water kept in an earthen pitcher, during summer days becomes very cold due to

1. Condensation

2. Evaporation

3. Freezing

4. Fusion

Q.

State any three effects of heat.

Q.

$\begin{array}{cccc}& \text{Solid to Liquid}& \text{Liquid to Gas}& \text{Gas to Solid}\\ \text{The distance between the particles}& \text{(1) Decreases}& \text{(2) Increases}& \text{(3) Decreases}\\ \text{Movement of particles}& \text{(4) Increases}& \text{(5) Decreases}& \text{(6) Increases}\\ \text{Attraction between particles}& \text{(7) Decreases}& \text{(8) Increases}& \text{(9) Increases}\end{array}$

Which of the following is/are incorrect?

1. (2), (3), (5), (8)

2. (1), (3), (4), (6)

3. (2), (5), (3), (4)

4. (1), (5), (6), (8)

Q.

How will you confirm that a colourless liquid given to you is pure water?

Q. _____ is the process of conversion of solids directly into the gases.

1. Evaporation
2. Boiling
3. Condensation
4. Sublimation

Q.

If we heat water then it converts to water vapour and this phase transition is called ___ .

1. Sublimation

2. Diffusion

3. Solidification

4. Vaporisation

Q.

Define the following term : (a) Freezing (b) Condensation.

Q.

When water solidifies to ice, then heat is ___.

1. First removed, then absorbed

2. Removed

3. Absorbed

4. Unchanged

Q.

In the given figure below, the appropriate terms A, B and C respectively are:

1. A - Solidification, B - Vaporization, C - Sublimation

2. A - Sublimation, B - Solidification, C - Vaporization

3. A - Diffusion, B - Sublimation, C - Vaporization

4. A - Vaporization, B - Solidification, C - Sublimation

Q.

Due to a change in which of the following properties matter can change from one state to another?

1. Volume

2. Density

3. Shape

4. Temperature