Kinetic Theory Exercise
1. Which of the following is responsible for a
matter changing state?
a) density
c) volume
b) temperature
d) height
2. The process of conversion of a gas into a
liquid is called:
a) vaporization
c) sublimation
b) solidification
d) condensation
9. The drying off of wet clothes is caused by:
a) boiling
c) condensation
b) evaporation
d) solidification
10. When water is converted into a gaseous
form, it is called:
a) water gas
c) fog
b) water vapour
d) snow
11. When water freezes into a solid, its density:
3. Sublimation is defined as:
a) the process in which a solid transitions
directly into the gas phase
b) the process in which a gas transitions
directly into the solid phase
c) the process in which a gas transitions
directly into the liquid phase
d) the process in which a liquid transitions
directly into the gas phase
a) increases
b) decreases
c) remains unchanged d) varies
12. When salt is added to water, its boiling
point:
a) increases
c) remains unchanged
b) decreases
d) varies
13. When ice melts:
4. Matter is something which is defined as:
a)
b)
c)
d)
no mass but occupies space
mass but occupies no space
mass & occupies space
no mass & occupies no space
a) a phase change occurs (solid to liquid)
b) heat is taken from the surroundings
c) the KE of the particles increases
d) all of the above
14. When water freezes:
5. Which of the following is true with respect
solids?
a)
b)
c)
d)
high kinetic energy
definite mass but no definite volume
easily compressible
strong intermolecular force of attraction
6. Which of the following is false with respect
to the characteristics of a fluid?
a) it can flow
b) it has mass
c) it has a definite shape
d) it can be perceived by our senses
7. Which of the following is true with respect
to gases?
a) gases are not at all rigid
b) gases are not easily compressible
c) gases have particles in fixed positions
d) gases have high density
8. Particle vibrations in a gas take place:
a) about their mean position
b) about a vertical axis
c) about a horizontal axis
d) in any direction
a) a phase change occurs (liquid to solid)
b) heat is lost to the surroundings
c) the KE of the particles decreases
d) all of the above
15. Which of the following statements is false?
a) changing a solid into a liquid requires
energy
b) water can exist in all three states
c) particles of gas possess high KE
d) in a solid the molecules have no motion
& no energy
16. During a change of state in a matter, the
temperature remains the same due to:
a) loss of heat
c) latent heat
b) less supply of heat
d) lattice energy
17. The process of mixing two gases is called:
a)
b)
c)
d)
diffusion
effusion
filtration
sedimentation