Phase Changes Review

When matter changes from a liquid to a solid, energy is:

• lost

• gained

• unaffected

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Select the correct order based on the least closely packed (dense) molecules to the greatest.

• gas - solid - liquid

• gas - liquid - solid

• liquid - gas - solid

• solid - liquid - gas

Tags

NGSS.MS-PS1-4

A puddle evaporating into water vapor is a physical change because no new substance is formed.

• True

• False

When ice is heated and begins to melt, what all happens to the molecules? Check all that apply.

• nothing

• they begin to move more rapidly

• they start to take on the shape of their container

• they stay in a defined shape

Tags

NGSS.MS-PS1-4

Having no definite volume and no definite shape describes a:

• solid

• liquid

• gas

Tags

NGSS.MS-PS1-4

Phase changes are:

• chemical changes

• physical changes

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

We know a phase change took place between 2 - 5 minutes because the temperature stayed the same for a bit.

• True

• False

Tags

NGSS.MS-PS1-4

When the temperature of a gas increases, the speed of the gas molecules:

• increases

• decreases

• stays the same

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

If Model B represents a SOLID, Model C probably represents a:

• liquid

• gas

Tags

NGSS.MS-PS1-4

NGSS.MS-PS1-1

What does Model D likely represent?

• element

• mixture

• compound

Tags

NGSS.MS-PS1-1