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- 1. Multiple Choice
The kinetic model of matter states that
atoms and molecules move in continuous and non-random motion.
atoms and molecules move in continuous and random motion.
the kinetic energies of atoms and molecules increase with increasing temperature.
the pressure of atoms and molecules is due to the collision of these particles with the walls of the container they are in.
- 2. Multiple Choice
Using a microscope, Peter observes that some pollen grains suspended in water move in an irregular manner. This is due to the
pollen grains colliding with one another.
pollen grains repelling one another.
bombardment of pollen grains by water molecules.
bombardment of water molecules by pollen grains.
- 3. Multiple Choice
Choose the most appropriate phrase to complete the following statement.
As the temperature of a gas increases, the gas molecules
move faster.
expand in volume.
increase in mass.
increase in number.
- 4. Multiple Choice
Choose the most appropriate description for the relative forces of attraction between particles in a solid, a liquid and a gas.
A
B
C
D
- 5. Multiple Choice
Solids have high densities relative to liquids because
1 the particles in solids are far apart.
2 the particles in solids have large masses.
3 the particles in solids do not move about.
1 only
2 only
2 and 3 only
None of the above
- 6. Multiple Choice
Siti observes that she cannot compress a syringe filled with water, but she can do so when the same syringe is filled with air. This is because
1 the air molecules are farther apart than the water molecules.
2 there are larger empty spaces between the air molecules compared to between the water molecules.
3 the water molecules have weaker forces of attraction than air molecules
1 and 2 only
2 only
2 and 3 only
3 only
- 7. Multiple Choice
Which statement describes the arrangement and movement of particles in a solid?
A
B
C
D
- 8. Multiple Choice
Which of the following correctly compares the properties of the different states of matter?
A
B
C
D
- 9. Multiple Choice
Brownian motion shows that
particles in all states of matter are in constant, random motion.
particles in a fluid are in continuous, random motion.
particles in solids vibrate about fixed positions.
particles in gases are farther apart compared to in liquids.
- 10. Multiple Choice
Which of the following statements about a gas is/are correct?
1 Smaller gas particles move with higher speeds compared to larger gas particles.
2 The intermolecular forces between gas particles are negligible.
3 At higher temperatures, the volume of gas particles increases.
1 only
2 only
1 and 2 only
1, 2 and 3
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