Changes in State Lesson

Which of the following describes the process of freezing?

• Freezing occurs when the particles of a solid vibrate so fast that they break free.

• Freezing occurs when the temperature drops enough a gas turns into a solid.

• Freezing occurs when the particles in a liquid slow down and take fixed positions.

• Freezing occurs when the temperature of a substance drops to 0 degrees Celsius.

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NGSS.MS-PS1-4

The process that makes ice cubes shrink as they sit in a freezer is called

• Boiling

• Freezing

• Sublimation

• Condensation

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NGSS.MS-PS1-4

The temperature at which a liquid turns to a gas is

• called the freezing point

• called the boiling point

• 212 degrees Celsius

• the same for an amorphous or a crystalline solid

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NGSS.MS-PS1-4

Vaporization is the reverse of condensation

• True

• False

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NGSS.MS-PS1-4

The temperature at which a liquid turns to a gas is called the boiling point.

• True

• False

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NGSS.MS-PS1-4

Sublimation and boiling both happen at the surface of the substance.

• True

• False

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

Water can undergo a change of state from liquid to __________ by decreasing the air pressure on its surface.

• gas

• solid

• plasma

• condensation

When a liquid freezes, its particles get ____. This could result from the pressure ____.

• farther apart; decreasing

• closer together; decreasing

• farther apart; increasing

• closer together; increasing

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

As pressure increases the boiling point of water increases.

• True

• False

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NGSS.MS-PS1-4

Water turning into ice is an example of?

• Condensation

• Freezing

• Melting

• Evaporation

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NGSS.MS-PS1-4