Review Quiz on Unit 1 Chem 2

According to the Kinetic Molecular Theory, what is the primary reason gases expand to fill their containers?

• The molecules are attracted to the container walls.

• The molecules are in constant random motion.

• The molecules are very large.

• The molecules are very heavy.

Which of the following is a postulate of the Kinetic Molecular Theory?

• Gases are incompressible.

• Gas molecules have no intermolecular forces.

• Gas molecules are very large.

• Gas molecules are stationary.

What is the term for the average kinetic energy of the molecules in a substance?

• Temperature

• Pressure

• Volume

• Mass

According to the Kinetic Molecular Theory, what happens to the kinetic energy of gas molecules as the temperature increases?

• It decreases.

• It remains constant.

• It increases.

• It becomes zero.

Which of the following best describes the behavior of gas molecules according to the Kinetic Molecular Theory?

• They move in straight lines until they collide with other molecules.

• They move in circular paths around the container.

• They are stationary unless heated.

• They repel each other.

Which type of intermolecular force is responsible for the attraction between two molecules of ammonia (NH3)?

• Hydrogen bonding

• Dipole-dipole interaction

• London dispersion forces

• Ion-dipole interaction

What is the primary factor that determines the strength of London dispersion forces between molecules?

• Molecular size

• Molecular polarity

• Molecular shape

• Molecular weight

Which of the following types of intermolecular forces is typically the weakest?

• Hydrogen bonding

• Dipole-dipole interaction

• London dispersion forces

• Ion-dipole interaction

Which type of intermolecular force is responsible for the high boiling point of water?

• Hydrogen bonding

• Dipole-dipole interaction

• London dispersion forces

• Ion-dipole interaction

Which of the following substances would have the strongest intermolecular forces?

• CO2

• H2O

• CH4

• He