3.3 Phase changes

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• Middelbare school
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• Leerjaar 2

States/phases of water

Water can occur in different phases.
Which phase transitions do
you remember?

Which phase transition is it when gas becomes a liquid?

1. sublimation
2. condensation
3. deposition
4. evaporation

Which phase transition is it when liquid becomes a solid?

1. evaporation
2. melting
3. solidification
4. condensation

Which phase transition is it when gas becomes a solid?

1. sublimation
2. evaporation
3. condensation
4. deposition

Which phase transition is it when solid becomes a liquid?

1. melting
2. solidification
3. sublimation
4. deposition

Which phase transition is it when liquid becomes a gas?

1. solidification
2. melting
3. evaporation
4. condensation

Which phase transition is it when solid becomes a gas?

1. sublimation
2. deposition
3. solidification
4. melting

Solidification

solidification

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Exception

Water expands from 4 to 0 degrees Celsius:

molecules form hexagons with a lot of free space between them.

Water is at its maximum density at 4 degrees Celsius.

Homework

Read 3.3 Do 23 till 27, 29, 31

Summarize 3.4