Phase Changes and Properties of Matter

Which phase change involves going from a gas to a solid?

• Melting

• Freezing

• Deposition

• Sublimation

Tags

NGSS.MS-PS1-4

What is the process of changing from a gas to a liquid?

• Freezing

• Melting

• Vaporization

• Condensation

Tags

NGSS.MS-PS1-4

In a laboratory experiment, a student heats a sample and observes it changing from one phase to another. If the molecules in the sample were initially tightly packed and moving slowly, but after heating, they were loosely packed and moving with greater speed, which phase change did the sample most likely undergo?

• Solid to Liquid

• Liquid to Gas

• Gas to Solid

• Solid to Gas

Tags

NGSS.MS-PS1-4

Which phase change involves changing from a solid to a gas?

• Vaporization

• Sublimation

• Deposition

• Condensation

A ​ (a)   is when the molecules that make up a substance experience a change to their freedom of movement. This involves a ​ (b)   -scale change in appearance.

• phase change

• chemical reaction

• macro

• micro

• molecular

Answer explanation

A phase change is not a chemical reaction. Chemical reactions require bonds to break and atoms to rearrange. Phase changes only require a change to the freedom of movement of a substance's molecules.

When a phase change happens, it can be seen with the naked human eye, which means that there is a macro-scale (large) change in appearance.

Tags

NGSS.MS-PS1-4

Study the diagram below. The material begins to condense at point:

• 1

• 2

• 3

Tags

NGSS.MS-PS1-4

What is the process of vaporization from the surface of a liquid called?

• Boiling

• Evaporation

• Condensation

• Sublimation

What is the name of the phase change from solid to liquid?

• Freezing

• Melting

• Vaporization

• Condensation

Tags

NGSS.MS-PS1-4

A scientist places a substance in a sealed container and observes its behavior as she gradually increases the temperature. Initially, the substance has a definite volume but takes the shape of its container. As the temperature rises, which phase of matter is the substance most likely in?

• Solid

• Liquid

• Gas

• Plasma

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is the phase change from liquid to gas called?

• Vaporization

• Boiling

• Condensation

• Evaporation

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5