Characteristics of Matter

Q.

Why is it that cold isnt a matter, but a cold drink is?

Q.

1. Molecules move away from each other and ice changes into water.

2. Molecules come closer and ice changes into water.

3. Ice absorbs all the heat without change in state.

4. Ice turns into vapour directly.

Q.

When a solid melts, its temperature remains constant. Why ?

Q.

Solids are highly compressible.

1. True
2. False

Q.

Discuss the properties of solids, liquids and gases in terms of:

vi. Compressibility.

Q.

Identify X, Y, and Z in the flow chart given below.

Q.

Which of the following is not matter?

1. Cold drink

2. cold

3. Hot coffee

4. Air

Q.

Mention the characteristics of matter.

Q. 800 gram of ice at minus 15 degree celsius is mixed with 100 gram of water at 440 degree Celsius calculate the final temperature of the mixture when equilibrium is attend

Q.

Find the odd one out and give reasons. Solute, solvent, transpiration, solution.

Q.

There is space between the particles of matter.

1. True
2. False

Q.

When water solidifies to ice, then heat is _______.

1. depending on the condition it may be absorbed or evolved

2. absorbed

3. remains constant

4. evolved

Q. When water freezes to become ice:

1. heat is not involved in this transition
2. heat is released
3. heat is absorbed
4. temperature of ice remains higher than freezing water

Q.

The boiling point of water and melting point of ice are _______ and _______ respectively.

1. 273 K ; 0^oC

2. 0^oC ; 273 K

3. 100 K ; 100 K

4. 373 K ; 273 K

Q. Explain in terms of molecules what happens when
(a) ice changes to water.
(b) liquid wax solidfies after cooling.

Q.

What are the characteristic property of the particles of matter.

Q.

On heating matter, the particles ...... energy and on cooling matter, the particles .......energy.

1. lose, gain
2. gain, lose
3. lose, lose
4. gain, gain

Q. If you heat a liquid, it will ultimately change into

(a) a solid
(b) a gas
(c) either a solid or a gas depending on temperature
(d) neither solid nor gas−it will always remain a liquid

Q. "Peg !" she said, "let me see your picture."
"Whats that matter?" asked Peggy, as they clattered up to her room.
"Look she drew you. Thats you!" she exclaimed.
Convert the following into Indirect speech.

Q. Which state is honey in ?
a) Solid
b) Liquid
c) Gas
d) Plasma
e) Bose - Einstein

Q.

Which phenomenon occurs during drying of wet clothes?

1. Freezing

2. Transpiration

3. Evaporation

4. Condensation