Amplify Phase Change

the change of a substance from a gas to a liquid

• condensation

• atom

• evaporation

• freedom of movement

• freezing

Tags

NGSS.MS-PS1-4

a noticeably different form or state of the same substance

• phase

• atom

• condensation

• evaporation

• freedom of movement

Tags

NGSS.MS-PS1-4

the change of a substance from a liquid to a gas

• evaporation

• atom

• condensation

• freedom of movement

• freezing

Tags

NGSS.MS-PS1-4

You are relaxing on some grass when you notice LIQUID water droplets have begun to seemingly disappear off the grass leaves. Which answer BEST explains what PHASE CHANGE has occurred AND how the molecule ARRANGEMENT has changed?

• The PHASE CHANGE that has occurred is EVAPORATION and the molecule ARRANGEMENT has become FARTHER APART.

• The PHASE CHANGE that has occurred is FREEZING and the molecule ARRANGEMENT has become CLOSER.

• The PHASE CHANGE that has occurred is MELTING and the molecule MOVEMENT has become FASTER.

Tags

NGSS.MS-PS1-4

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

• 1

• 2

• 3

Tags

NGSS.MS-PS1-4

A scientist transfers the same amount of energy into both substances. One substance changes phase, but the other does not. Which chemical changed phase, and why did it change?

• Substance A changed phase because its molecules were able to move fast enough to overcome the attraction between them. It is now a gas.

• Substance B changed phase because the strong attraction between molecules made their movement slower. It is now a solid.

• Substance B changed phase because the molecules were able to move fast enough to overcome the attraction between them. It is now a gas.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS3-4

A student left a sealed jar of water outside her home. Water can be a solid, liquid, or gas. When she put it outside, the water was a solid. Twelve hours later, the water had changed phase and was a liquid. What happened to the water molecules?

• Before the student left, the molecules were moving in place. After, the molecules were moving around each other

• Before the student left, the molecules were moving around each other. After, the molecules were moving away from each other

• Before the student left, the molecules were moving around each other. After, the molecules were moving in place.

• Before the student left, the molecules were moving away from each other. After, the molecules were moving around each other.

Tags

NGSS.MS-PS1-4

Lily is doing a science experiment with a substance in a sealed jar. At first, the substance’s molecules are moving around each other. What will happen to Lily’s substance if she transfers energy into the substance and causes a phase change?

After the phase change, the substance's molecules will move . . .

• faster, and the substance will be a liquid.

• faster, and the substance will be a gas.

• slower, and the substance will be a solid.

• slower, and the substance will be a liquid.

Tags

NGSS.MS-PS1-4

Which phase change occurs when a solid turns to a liquid?

• Melting

• Condensing

• Vaporizing

• Freezing

Tags

NGSS.MS-PS1-4

Which phase change occurs when a liquid turns to a gas?

• Melting

• Condensing

• Evaporating

• Freezing

Tags

NGSS.MS-PS1-4