Phase Changes and Phase Diagrams

The diagram below shows the different phase transitions that occur in matter. Which arrow would most likely represent the phase change that involves the same amount of energy as arrow 1?

• 2

• 3

• 4

• 5

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

A solid substance turns directly into a gas. Which term describes this change?

• deposition

• evaporation

• melting

• sublimation

Tags

NGSS.MS-PS1-4

In which phase transition do molecules move directly from a state involving vibration of particles in a fixed position to a state involving random movement of high-speed particles?

• evaporation

• sublimation

• freezing

• deposition

Tags

NGSS.MS-PS1-4

Which energy change occurs during boiling?

• Some heat energy of the substance is lost.

• Heat energy of the substance remains the same.

• Most heat energy of the substance is lost.

• Heat energy is absorbed by the substance.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The arrows in the chart below represent phase transitions. Which arrows represent the phase transitions in which heat energy is gained?

• 1, 2, and 3

• 2, 3, and 5

• 3, 4, and 5

• 4,5, and 6

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Which example involves a phase change in which heat energy is released by the substance?

• freezing ice cream

• cooking a pot of soup

• melting ice under sunlight

• watching frost disappear into air

Tags

NGSS.MS-PS1-4

Jean has a sample of a liquid. If she changes the liquid’s phase by ____________ it, the molecules will spread out, allowing the sample to expand and fill a container of any shape or volume.

• evaporating

• freezing

• condensing

• melting

Tags

NGSS.MS-PS1-4

What letter on the diagram represents a substance only in the liquid?

• A

• B

• C

• D

Tags

NGSS.MS-PS1-4

What letter on the diagram represents a substance only in the solid phase?

• A

• B

• C

• D

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What letter on the diagram represents the triple point?

• A

• B

• C

• D

Tags

NGSS.MS-PS1-4