Phase Change Critical Juncture

If a substance has molecules moving in place and then undergoes a phase change and now has molecules moving around each other it has changed from a.......

• solid to a gas

• gas to a liquid

• solid to liquid

• liquid to a solid

Tags

NGSS.MS-PS1-4

If you have a container full of ice and you transfer in enough kinetic energy to create a phase change it is now a...

• solid

• liquid

• gas

• plasma

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

If you add kinetic energy to a substance are you increasing or decreasing the freedom of movement of the molecules?

• increasing

• decreasing

Tags

NGSS.MS-PS1-4

A student 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 the student's substance if he transfers energy out of the substance and causes a phase change? After the phase change, the substance’s molecules will move . ..

• faster and be a gas

• faster and be a liquid

• slower and be a liquid

• slower and be a solid

Tags

NGSS.MS-PS1-4

A student found two different substances. Substance 1 and 2 were both liquids at room temperature. They took away the same amount of kinetic energy out of both substances, but only substance 1 changed phase. How are the substances different?

• Substance 1 has a weaker attraction between its molecules than Substance 2. Its molecules now move in place.

• Substance 1 has a weaker attraction between its molecules than Substance 2. Its molecules now move around each other.

• Substance 1 has a stronger attraction between its molecules than substance 2. Its molecules now move away from each other.

• Substance 1 has a stronger attraction between its molecules than substance 2. Its molecules now move in place.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS3-4

A student had a Popsicle but left it out and it started to melt. What caused the Popsicle to melt?

• kinetic energy was taken away (transferred out) from the Popsicle

• kinetic energy was added (transferred in) to the Popsicle

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

Substance A has a strong attraction between its molecules and substance B has a weak attraction between its molecules. They are both liquids at room temperature. If the same amount of kinetic energy is added to them which substance is more likely to change to a gas?

• substance a

• substance b

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which substance has molecules that are moving?

• the liquid water

• the ice

• neither water or ice

• both ice and water

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

Gas to liquid phase change

• melting

• condensation

• evaporation

Tags

NGSS.MS-PS1-4

Liquid to gas phase change..

• evaporation

• condensation

• freezing

Tags

NGSS.MS-PS1-4