1.2 Micro macro, phase transitions and temperature changes

• Scheikunde
• Middelbare school
• havo
• Leerjaar 3

Micro macro, phase transitions and temperature changes

Paragraaf 1.2

Demo - Solidification pure substance/mixture

Micro (molecules)

Macro (senses)

phet.colorado.edu

Pure substance

Mixture

The odor of a candle

1. Macro
2. Micro

1. Macro
2. Micro

What phase transition do you see here?

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

What is phase transition from gas to solid called?

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

Do molecules change during phase transition?

1. Yes
2. No

Which diagram shows a boiling range?

1. 1
2. 2
3. 3
4. 4

Which diagram shows a freezing point?

1. 1
2. 2
3. 3
4. 4

Is this diagram from a pure substance or a mixture?

1. Pure substance
2. Mixture

At what temperature does the boiling start and end?

1. 20 C and 100 C
2. 55 C and 95C
3. 20 C and 65 C
4. 55 C and 65 C