Chemistry Unit 4 review

A gas in a container is heated over a flame. What happens to the average kinetic energy of the gas particles?

• It decreases rapidly.
• It increases quickly.
• It remains the same.
• It decreases slowly.

According to the kinetic-molecular theory, the average kinetic energy of gas particles depends on which factor?

• Volume
• Pressure
• Temperature
• Number of Particles

which statement best applies the gasphase of a sample of matter?

• Its particles have the highest average kinetic energy.
• Its particles have the smallest volume of all three states of matter.
• Its particles are slowing down because of a temperature increase.
• Its particles are moving apart due to repulsion between them.

A substance is made up of slow-moving particles that have very little space between them. Based on this information, what can most likely be concluded about this substance?

• It is not a gas because its particles do not move continuously.
• It is a gas because its particles move continuously in a straight line.
• It is not a gas because its particles do not have large spaces between them.
• It is a gas because its particles move in many different directions.

Which term refers to a property that depends only on the amount of a substance?

• Flammability
• Extensive
• Reactivity
• Intensive

Which property of a glass of water is an example of an extensive property of water?

• The transparency of the water
• The density of the water
• The volume of the water
• The odor of the water

Which of the following is not an intensive properties of matter?

• Density
• Mass
• Boiling point
• Color

Which state of matter is characterized by no definite shape or volume, and rapidly moving particles spaced far apart from one another?

• Gas
• Liquid
• Plasma
• Solid

Which phase of matter is characterized as having no definite shape, definite volume, and is nearly incompressible?

• Gas
• Liquid
• Plasma
• Solid

Which process describes a chemical change?

• burning a match
• boiling water
• melting ice
• breaking glass