Repetitie H1 en H2 herkansing

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

Self-test

H1 en H2

Havo en VWO

Mengsels

Nienke doet een proef met vier stoffen om te zien of ze oplossen in water. Hieronder staan in de tabel de resultaten.

Solution

Suspension

Emulsion

Nienke wants to separate the mixture in tube 4  

Gif two separating methods which she can use

Duralum

Duralum is a mixture with aluminium. It is used in frames for bikes, but also in airplanes. It contains  93,5 massa% aluminium, 4,0% koper, 1,9% magnesium en 0,60% mangaan. 

Calculate how much gram magnesium there is in  3,5 kg of the mixture? 

Which of the following belongs to the boilingrangx of kerosine (a mixture)?

1. 
2. 
3. 
4. 

Verbind de begrippen met het juiste plaatje.

density

Destilleren

sedimentation

boiling point

solubility

particle size

evaporation

Extraction

Filtration

elk plaatje goed is 1 punt

A standard glass of beer contains 250 mL, a standard glass of wine contains 100 mL. Beer contains 5% alcohol, wine contains 12% alcohol. 

Calculate which glass contains more alcohol

Sleep de fase en faseovergang naar de juiste plek.

melting

Freezing

Condensation

Sublimation

Deposition

evaporation

gas

liquid

solid

Which diagram belongs to boiling distilled water?

1. 
2. 
3. 
4. 

Johan is a nurse. He had to fill a syringe with 0.60 mg medicine. The flask contains 0,25 mg/mL. 

How much mL does Johan have to put in the syringe?

You see a measuring cilinder with a block in it. The mass of the block is  0,022kg.  Calculate the density !

A tank contains 1500 Liter water. The fish that are swimming in the tank need 67,5 g oxygen. How warm can the water be  at max?

1. 45 degrees Celcius
2. 30 degrees Celcius
3. 20 degrees Celcius
4. 5 degrees Celcius

Ryanne has 150 mL of a saturated solution saltwater. How much salt water is in 150 mL ? (solubility salt: 359 g/L)

1. 5,39 g
2. 53,9 g
3. 4,40 g
4. 40,4 g

Arrange the following in the correct order.

Suspension

solution

Emulsion

Can you separate a solution with sedimentation?

1. yes
2. no

Filtration is due to difference in

1. particle size
2. density
3. mass
4. volume

You cannot filter a solution

1. True
2. False

what is extraction?

1. particle size separation
2. separation based on solubility
3. separation by boiling point
4. separation based on density

What kind of substances can be separated by extraction?

1. Solid + Solid
2. Gas +Liquid
3. Liquid + Liquid
4. Solid + Liquid

With a separation of sand and salt, there are 5 grams of salt in 100 grams of the mixture. After extraction, only 4.5 grams of salt appear to have been recovered. Calculate the efficiency of this separation.

1. 4,5%
2. 5%
3. 90%
4. 111%

Put in the correct order to obtain a colorless flame

1.

2

3

4

5

controleer gasknop en luchtschijf

zet de hoofdgaskraan open

light a match

zet de gas regelknop open

open the air disc

This symbol means:

1. corrosive
2. flammable
3. irritant
4. explosive

This symbol means:

1. corrosive
2. environmental hazard
3. harmful
4. explosive

Hieronder staan 4 uitspraken over cola. In welk geval is er sprake van een conclusie.

1. cola is een donkerbruine vloeistof
2. cola is slecht voor je tanden
3. cola smaakt zoet
4. in cola zie je gasbelletjes

Put in the correct box

a material of property

not a substance property

colour

geur

melting point

boiling point

mass

volume

dichtheid

phase

solubility in water

solubility in oil

3 punten wanneer ze de drie NIET stofeigenschappen goed hebben

Here we see the cooling of a gas. What phase does the substance have at 473 degrees Kelvin?

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

Op het plaatje zie je ...........

1. Links een mengsel rechts een zuivere stof
2. Links een mengsel rechts een mengsel
3. Links een zuivere stof rechts een zuivere stof
4. Links een zuivere stof en rechts een mengsel