1.3 and 1.4

• Scheikunde
• Middelbare school
• havo, vwo
• Leerjaar 3

Condensation

Gas

Liquid

Solid

Evaporation

Sublimation

Deposition

Solidification/Freezing

Melting

When a gas reaches its condensation point it becomes a

1. solid
2. liquid
3. gas
4. water

Josh breathes on the window: the window fogs over. What is the term for the phase transition: that makes this moist spot disappear again a little later?

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

Which phase transition is it when liquid becomes a solid?

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

Which phase transition is it when liquid becomes a gas?

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

Which phase transition is it when liquid becomes a gas?

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

In dry ice the phase transition takes place called

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

What phase transition do you see here?

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

What is phase
transition 3 called?

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

Condensation happens when it gets ....

1. Colder
2. Warmer

condensation is

1. dry
2. snow
3. water in the air

273 Kelvins =

1. 546 Celsius
2. 0 Celsius
3. 20 Celsius
4. 273 Celsius

Convert: 100 ℃ to Kelvin

1. 293 K
2. 273 K
3. 253 K
4. 373 K

Room temperature in Kelvin is

1. 273 K
2. - 273 K
3. 293 K
4. 310 K

At what temperature does everything stop moving? What is absolute zero in Kelvin?

1. 100 Kelvin
2. 1000 Kelvin
3. 273 Kelvin
4. 0 Kelvin

Convert:
- 15 Kelvin is

1. -288 Celsius
2. 258 Celsius
3. -258 Celsius
4. impossible

When melting a substance, you see the temperature staying the same.
What do you call this?

1. The melting dot
2. The melting range
3. The melting area
4. The melting point

What is a melting range?

1. The exact temperature where a substance melts (ex. 3 degrees Celsius).
2. A temperature range where a substance melts (ex. between 0 and 5 Celsius).
3. Room temperature

A mixture has a

1. boiling point
2. boiling range

what is shown in the graph?

1. melting range
2. solidifying point
3. solidifying range
4. melting point

Mixture or
pure substance?

1. Mixture
2. Pure substance
3. Couldn't say

What is the melting range of this substance?

1. 0°C to 40°C
2. 40°C to 50°C
3. 50°C to 74°C
4. 0°C to 74°C

What's the name of the diagram?

1. melting diagram
2. boiling diagram
3. solidification diagram
4. condensation diagram

What type of mixture is mud?

1. Emulsion
2. Solution
3. Suspension
4. Alloy

What sort of mixture is milk?

1. Emulsion
2. Solution
3. Suspension
4. Alloy

What sort of mixture is wine?

1. Emulsion
2. Solution
3. Suspension
4. Alloy

How many types of molecules does a mixture have?

1. 1 type of molecule
2. 2 types of molecules
3. at least 1 type of molecule
4. at least 2 types of molecules

What type of mixture is this?

1. Emulsion
2. Solution
3. Emulsifier
4. Suspension

What type of mixture is this?

1. solution
2. suspension
3. emulsion

A permanent emulsion is a
mixture of ...

1. Water and salt
2. water, oil and emulsifier
3. Oil and gasoline
4. water and oil

a suspension is a ... mixture

1. heterogeneous
2. homogeneous

When testing the pH of a solution the indicator paper turns blue.
What is the approximate pH of the solution?

1. 1
2. 5
3. 7
4. 14

the pH...

1. is high in an acidic solution
2. is high in a basic solution
3. is <7 in an acidic solution
4. is >7 in a basic solution

A solution has a pH 6.3. If a base is added then the pH

1. will decrease
2. will increase
3. stays the same

A pH of 3 is more acidic than a pH of 5

1. True
2. False

A solution with a pH = 2,0 is diluted by 10x. What is the new pH?

1. pH = 0,20
2. pH = 1,0
3. pH = 3,0

Water is added to a solution with a pH of 3. What could the pH now be?

1. pH 2
2. pH 3
3. pH 4
4. pH 8