States of Matter MCQs Quiz Multiple Choice Questions & Answers

1. A real gas

1. does not obey all the assumptions of the kinetic-molecular theory.
2. consists of particles that do not occupy space.
3. cannot be condensed.
4. cannot be produced in scientific laboratories.

2. A solid forms when the average energy of a substances particles

1. increases.
2. decreases.
3. decreases then increases.
4. creates a random arrangement.

3. According to the kinetic-molecular theory, how does a gas expand?

1. Its particles become larger.
2. Collisions between particles become elastic.
3. Its temperature rises.
4. Its particles move greater distances.

4. According to the kinetic-molecular theory, particles of an ideal gas

1. attract each other but do not collide.
2. repel each other and collide.
3. neither attract nor repel each other but collide.
4. neither attract nor repel each other and do not collide.

5. According to the kinetic-molecular theory, particles of matter

1. are in constant motion.
2. have different shapes.
3. have different colors.
4. are always fluid.

6. According to the kinetic-molecular theory, particles of matter are in motion in

1. gases only.
2. gases and liquids only.
3. solids, liquids, and gases.
4. solids only.

7. According to the kinetic-molecular theory, which substances are made of particles?

1. gases only
2. liquids only
3. all matter
4. all matter except solids

8. An ideal gas is a hypothetical gas

1. not made of particles.
2. that conforms to all of the assumptions of the kinetic theory.
3. whose particles have zero mass.
4. made of motionless particles.

9. Any sample of matter has mass and takes up space. The main reason for this is because:

1. All matter is heavy
2. Matter can be a gas
3. Matter is made up of tiny particles that have mass and take up space
4. The Earth is made of matter

10. At pressures greater than 1 atm, water will boil at

1. a temperature higher than 100 degree Celcius.
2. a temperature lower than 100 degree Celcius.
3. 100 degree Celcius.
4. 4 degree Celcius.

11. By which process do gases take the shape of their container?

1. evaporation
2. expansion
3. adhesion
4. diffusion

12. During the process of freezing, a liquid

1. loses kinetic energy.
2. loses potential energy.
3. gains potential energy.
4. gains kinetic energy.

13. Food coloring spreads out faster in hot water than in cold water. This is mainly because:

1. The water molecules in hot water move more quickly
2. The molecules in hot water are larger
3. The food coloring molecules are small
4. Hot water is less dense

14. If the rate of evaporation from the surface of a liquid exceeds the rate of condensation,

1. the system is in equilibrium.
2. the liquid is boiling.
3. energy as heat is no longer available.
4. the concentration of the vapor is increasing.

15. If you put food coloring in room temperature water, the coloring spreads throughout the water. The water causes the color to spread mainly because:

1. Water molecules are warm
2. Water molecules are in motion
3. Water is more dense than food coloring
4. Food coloring molecules are small

16. Particles within a solid

1. do not move.
2. vibrate about fixed positions.
3. move about freely.
4. exchange positions easily.

17. The compressibility of solids is generally

1. lower than the compressibility of liquids and gases.
2. higher than the compressibility of liquids only.
3. about equal to the compressibility of liquids and gases.
4. higher than the compressibility of gases only.

18. The particles in a liquid are usually

1. closer together and lower in energy than those in a solid.
2. farther apart and higher in energy than those in a gas.
3. closer together and lower in energy than those in a gas.
4. farther apart and lower in energy than those in a solid.

19. To describe a gas, which is incorrect statement:

1. The particles are very attracted to each other
2. The particles are not very attracted to each other
3. The particles of a gas are further apart than the particles in a liquid or solid
4. All of the above

20. To describe a liquid, you could say:

1. The particles of a liquid are in motion and attracted to one another
2. The particles of a liquid are able to move past one another
3. A liquid has mass and takes up space
4. All of the above

21. To describe a solid, which is incorrect statement:

1. The particles of a solid are attracted to each other
2. The particles of a solid can move past one another
3. The particles of a solid vibrate but do not move past one another
4. A solid has mass and takes up space

22. Two gases with unequal masses are injected into opposite ends of a long tube at the same time and allowed to diffuse toward the center. They should begin to mix

1. in approximately five minutes.
2. closer to the end that holds the heavier gas.
3. closer to the end that holds the lighter gas.
4. exactly in the middle.

23. Water drops stay together on wax paper and they don’t break apart easily. This is mainly because:

1. Water molecules are small
2. Water molecules are in motion
3. Water molecules are attracted to each other
4. Water molecules are wet

24. When a thermometer is cooled, the red liquid inside the thermometer moves down. This is mainly because:

1. Cold liquids sink
2. The glass of the thermometer gets cold
3. The molecules of the liquid move slower and get a little closer together
4. The red liquid is thick

25. When a thermometer is heated, the red liquid inside the thermometer moves up. This is mainly because:

1. The red liquid is thin.
2. The molecules of the liquid move faster and get a little further apart
3. Hot liquid is lighter
4. The glass of the thermometer gets hot

26. When energy as heat is applied to a liquid-vapor system at equilibrium, a new equilibrium state will have

1. a higher percentage of liquid.
2. a higher percentage of vapor.
3. equal amounts of liquid and vapor.
4. all liquid.

27. When you bring two drops of water near each other and allow them to touch, they combine immediately and become one drop. This is mainly because:

1. Water molecules are made of atoms
2. Water molecules are attracted to each other
3. Water molecules are magnetic
4. Water is a liquid

28. When you heat a sample of a solid, the particles that make up the solid:

1. Get bigger
2. Loose mass
3. Move faster
4. Slow down

29. When you heat a sample of a solid, the sample gets a little bigger. This is mainly because:

1. The particles move faster and get a little further apart
2. Heat helps the particles grow
3. Heating the sample makes it lighter
4. Heating helps the particles slide past each other

30. When you heat a sample of gas, what happens to the particles that make up the gas?

1. The particles move faster
2. The particles break apart
3. The particles get smaller
4. The particles become more dense

31. Which causes the high density of solids?

1. The particles are more massive than those in liquids.
2. The intermolecular forces between particles are weak.
3. The particles are packed closely together.
4. The energy of the particles is very high.

32. Which is an example of effusion?

1. air slowly escaping from a pinhole in a tire
2. the aroma of a cooling pie spreading across a room
3. helium dispersing into a room after a balloon pops
4. oxygen and gasoline fumes mixing in an automobile carburetor

33. Which is an example of gas diffusion?

1. inflating a flat tire
2. the odor of perfume spreading throughout a room
3. a cylinder of oxygen stored under high pressure
4. All of the above

34. Which process can be explained by the kinetic-molecular theory?

1. combustion
2. oxidation
3. condensation
4. displacement reactions

35. Which term best describes the process by which particles escape from the surface of a nonboiling liquid and enter the gas state?

1. sublimation
2. evaporation
3. surface tension
4. aeration