Phase Change: Part 3

Gas --> Liquid

• Particles are moving away from each other -> particles are moving around each other

• Particles are moving in place -> particles are moving around each other

• Particles are moving away from each other -> particles are moving in place

• Particles are moving in place -> particles particles are moving in place

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

Solid --> liquid

• Particles are moving away from each other -> particles are moving around each other

• Particles are moving in place -> particles are moving around each other

• Particles are moving away from each other -> particles are moving in place

• Particles are moving in place -> particles particles are moving in place

Tags

NGSS.MS-PS1-4

Gas--> solid

• Particles are moving away from each other -> particles are moving around each other

• Particles are moving in place -> particles are moving around each other

• Particles are moving away from each other -> particles are moving in place

• Particles are moving in place -> particles particles are moving in place

Tags

NGSS.MS-PS1-4

You are looking at a substance that started as an ice cube but melted in to water. What happened to the molecules?

• Particles are moving away from each other -> particles are moving around each other

• Particles are moving in place -> particles are moving around each other

• Particles are moving away from each other -> particles are moving in place

• Particles are moving in place -> particles particles are moving in place

Tags

NGSS.MS-PS1-4

You are looking at a substance that started as water and evaporated into water vapor. What happened to the molecules?

• Particles are moving away from each other -> particles are moving around each other

• Particles are moving in place -> particles are moving around each other

• Particles are moving away from each other -> particles are moving in place

• Particles are moving around each other -> particles are moving away from each other

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

Scientists are able to change oxygen in the gas state to oxygen as a liquid. How do they do that?

• They add energy and increase the temperature

• They reduce energy and decrease the temperature

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Refrigerators are able to transfer energy out of a substance. At first, the substance is a liquid. The refrigerator changes the phase of the substance by transferring energy out of it. How does this change affect the substance’s molecules?

After the phase change, the molecules move . . .

• slower, and they move away from each other.

• slower, and they move in place.

• faster, and they move around each other.

• faster, and they move in place.

Tags

NGSS.MS-PS1-4

the way molecules in a substance move around relative to each other

• phase

• phase change

• freedom of movement

• temperature

Tags

NGSS.MS-PS1-4

a pull between two molecules that is always the same for a substance

• freedom of movement

• molecular attraction

• temperature

• molecule

Tags

NGSS.MS-PS2-5

a noticeably different form or state of the same substance

• molecule

• condensation

• evaporation

• phase

Tags

NGSS.MS-PS1-4