Effects of Temperature on State of Matter

Q.

What is the effect of temperature in the inter-conversion of states of matter?

Q.

Give two examples of the substances which expand on heating.

Q.

The temperature of a substance remains unaffected during its change of state.

1. True

2. False

Q.

Give one word or term for the following description:

A measure of average kinetic energy of particles.

Q.

How can you say different liquids have different rates of expansion for the same rise in temperature?

Q.

Arrange the following substance in increasing order of forces of attraction between the particles water, sugar, oxygen

Q. In solids, transfer of heat predominantly occurs through ______.

1. conduction
2. radiation
3. vaporization
4. convection

Q.

Condensation refers to the change of state from liquid to gas on cooling.

1. True
2. False

Q.

In this chapter it is explained that we are actually not touching anything only the atoms start repeling each other. So why do we feel that the object is hot or cold?

Q.

9. Dew is found on the leaves of grass on ________.

Q.

Define temperature.

Q.

Answer the following question in brief: What are the effects of heat on matter

Q. A thin walled metal tank of surface area 5m^2 is filled with water and contains an immersion heater dissipating 1KW.The tank is covered with 4cm thick layer of insulation whose thermal conductivity is 0.2W/m/K.The outer face of the insulation is 25°C.Find the temperature of the tank in steady state.

Q.

When water is heated in a container, its level rises because of ___ expansion.

1. cubical

Q.

Thermal conduction can take place in:

1. liquids only

2. gases only

3. solids only

4. \N

Q.

Arrange three states of matter in ascending order of the inter-molecular force.

Q.

Which among the following is a solid substance at room temperature?

1. Fluorine

2. Mercury

3. Kerosene

4. Iodine

Q.

Match the columns.

Column 1	Column 2
Vaporisation	Solid
Sublimation	Gas
Fixed shape and fixed mass	Liquid converted into gas
Highly compressible	Alloys
Homogenous mixture of metals	Ammonium chloride

Q.

specific heat capacity of a substance depends upon___

Q.

If you compress the gas in a closed container, then the ___.

1. temperature of the gas decreases

2. volume of the gas increases

3. temperature of the gas increases

4. temperature drops to zero

Q.

Which of the following has the strongest intermolecular force of attraction between its particles at room temperature?

1. Chalk

2. Nitrogen

3. Mercury

4. Iron

Q.

Explain the nature of molecules in solids, liquids and gases.

Q.

In summer, telephone wires sag.

1. True
2. False

Q.

More the temperature of the liquid___.

1. more is the kinetic energy of molecules

2. less is the liquid pressure

3. less will be the boling point

4. more possibility of solidification

Q.

Change in which of the following physical properties can transform matter from one state to another?

1. Temperature

2. Concentration

3. Pressure

4. Volume

Q.

On increasing the temperature of a substance, the kinetic energy of its particles increases.

1. True

2. False

Q.

Assume a gas stored in a container at room temperature. Identify the physical effect(s) that is/are caused by the motion of the particles of the gas inside the container.

1. Kinetic Energy

2. Pressure

3. Potential Energy

4. Temperature

Q.

Which of the following can transform matter from one state to another?

1. Change in temperature

2. Change in concentration

3. Change in pressure

4. None of the above.