Exploring Phase Changes at the Molecular Level

What are the three main phases of matter encountered in everyday life?

• Solids, Liquids, Aerosols

• Liquids, Gases, Plasmas

• Solids, Liquids, Gases

• Solids, Plasmas, Gases

What analogy is used to describe the molecular arrangement in a solid?

• Books on a shelf

• People in a library

• Cars in traffic

• People at a concert

What happens to the molecules of a solid as it heats up to become a liquid?

• They vanish

• They move more

• They move less

• They stop moving

What is the process called when a solid turns into a liquid?

• Melting

• Vaporization

• Condensation

• Freezing

During the transition from liquid to gas, what concert scenario is compared to the molecular activity?

• Orchestra

• Choir

• Mosh pit

• Solo performance

What is the term for the transition from gas to liquid?

• Melting

• Freezing

• Condensation

• Sublimation

How are molecules described when they are in the gas phase?

• Disorganized

• Completely static

• Highly organized

• Moderately packed

What happens to the molecular speed when a gas is cooled?

• Remains constant

• Becomes zero

• Increases

• Decreases

What process describes the transition from liquid back to solid?

• Freezing

• Condensation

• Vaporization

• Sublimation

What effect does adding heat have on the molecular movement from solid to gas?

• Increases speed

• Randomizes direction

• No change in speed

• Decreases speed