Chemistry Term 1

A real gas

• 1. does not obey all the assumptions of the kinetic-molecular theory.

• 1. consists of particles that do not occupy space.

• 1. cannot be condensed.

• 1. cannot be produced in scientific laboratories.

A solid forms when the average energy of a substances particles

• 1. increases.

• 1. decreases.

• 1. decreases then increases.

• 1. creates a random arrangement.

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

• 1. Its particles become larger.

• 1. Collisions between particles become elastic.

• 1. Its temperature rises.

• 1. Its particles move greater distances.

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

• 1. attract each other but do not collide.

• 1. repel each other and collide.

• 1. neither attract nor repel each other but collide.

• 1. neither attract nor repel each other and do not collide.

According to the kinetic-molecular theory, particles of matter

• 1. are in constant motion.

• 1. have different shapes.

• 1. have different colors.

• 1. are always fluid.

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

• 1. gases only.

• 1. gases and liquids only.

• 1. solids, liquids, and gases.

• 1. solids only.

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

• 1. gases only

• 1. liquids only

• 1. all matter

• 1. all matter except solids

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

• 1. The molecules in hot water are larger

• 1. The food coloring molecules are small

• 1. Hot water is less dense

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

• 1. the system is in equilibrium.

• 1. the liquid is boiling.

• 1. energy as heat is no longer available.

• 1. the concentration of the vapor is increasing.

The compressibility of solids is generally

• 1. about equal to the compressibility of liquids and gases.

• 1. higher than the compressibility of gases only.

• 1. lower than the compressibility of liquids and gases.

• 1. higher than the compressibility of liquids only.