Amplify Phase Changes

When a gas changes directly to a solid

• deposition

• sublimation

Tags

NGSS.MS-PS1-4

When a solid changes directly into a gas

• deposition

• sublimation

Tags

NGSS.MS-PS1-4

Which state of matter has molecules that slide past each other but stay close together? They do not form a regular pattern.

• solid

• liquid

• gas

Tags

NGSS.MS-PS1-4

If this substance had kinetic energy ADDED, it would be in what phase?

• solid

• liquid

• gas

• plasma

Tags

NGSS.MS-PS1-4

The temperature at which a substance changes from the liquid phase to the gas phase...

• freezing point

• melting point

• boiling point

• high temperature

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The temperature at which a substance changes from the solid phase to the liquid phase....

• boiling point

• meling point

• liquid point

• condensation point

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

NGSS.MS-PS3-4

NGSS.MS-PS3-5

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-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS1-2

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

What is the process called when a liquid changes into a gas at a temperature below its boiling point?

• Evaporation

• Condensation

• Sublimation

• Freezing

Tags

NGSS.MS-PS1-4