Unit 2: States of Matter and Changes of State

Which phrase describes the changes that take place when a gas condenses?

• loss of energy and increased freedom of particle motion

• gain of energy and increased freedom of particle motion

• loss of energy and decreased freedom of particle motion

• gain of energy and decreased freedom of particle motion

Tags

NGSS.MS-PS1-4

Frost forms when water vapor changes directly from a gas to ice in a process called deposition. If you were to model the water particles before and after deposition, how would they compare?

• Before deposition, the particles vibrate in place; after deposition, they slide by each other.

• Before deposition, the particles slide by each other; after deposition, they vibrate in place.

• Before deposition, the particles vibrate in place; after deposition, they move quickly in all directions.

• Before deposition, the particles move quickly in all directions; after deposition, they vibrate in place.

Tags

NGSS.MS-PS1-4

Which energy transfer takes place when water freezes to form ice crystals in the atmosphere?

• Energy is transferred from the air into the water.

• Energy is transferred from the water into the air.

• Energy is transferred from the water into the ground.

• Energy is transferred from warmer ice crystals to colder ones.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

At higher temperatures

• particles in an object have less energy
• particles in an object move faster
• a gas contracts

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Freezing

• Solid to gas
• Liquid to solid
• Gas to solid
• Liquid to gas

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Boiling

• liquid to gas
• gas to solid
• gas to liquid
• solid to liquid

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Define a liquid.

• Indefinite shape, indefinite volume
• Definite shape, definite volume
• Found in stars
• Definite volume, indefinite shape

The state of matter that has no definite size or shape is

• Solid
• Liquid
• Gas

Particles (molecules) in a ______________________ have more energy than the other states of matter.

• gas
• solid
• liquid

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Particles of a liquid

• are tightly packed together and stay in a fixed position.
• have no viscosity.
• decrease in volume with increasing temperature.
• are free to move around one another but still touch.