Phase Changes

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

• deposition

• evaporation

• melting

• sublimation

Tags

NGSS.MS-PS1-4

H2O (water) is initially present in a state where its molecules are far apart. During a change of state, its molecules slow down. Which change of state has most likely taken place?

• from a gas to a liquid

• from a liquid to a gas

• from a solid to a liquid

• from a gas to a plasma

Tags

NGSS.MS-PS1-4

The diagrams below represent the four states of matter. Which diagram represents the phase that occurs after a solid melts?

• Diagram 1

• Diagram 2

• Diagram 3

• Diagram 4

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

The diagram below shows the different phase transitions that occur in matter. Which arrow would most likely represent the phase change that occurs when silver is poured into a mold and cools to become a solid bar?

• 1

• 3

• 4

• 5

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

Which best describes the energy change that takes place during deposition?

• Heat energy is released by the substance.

• Heat energy is maintained by the substance.

• Heat energy is slowly gained by the substance.

• Heat energy is quickly absorbed by the substance.

Tags

NGSS.MS-PS1-4

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

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

Consider the temperature versus time graph below. In which region is the substance in both the solid phase and the liquid phase?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-4