Werkblad Scheikunde voor toelatingsexamens verpleegkunde met antwoorden

DNA belongs to which group of biological molecules?

1. ALipids
2. BNucleic acids
3. CProteins
4. DCarbohydrates

Waarom wordt water vaak het universele oplosmiddel genoemd?

1. AHet lost meer stoffen op dan andere gewone vloeistoffen
2. BHet is de enige vloeistof op aarde
3. CHet heeft nergens in zijn molecuul partiële ladingen, dus het mengt met alles
4. DHet lost elke stof volledig op

Which functional group is found in all alcohols?

1. AAmino group (–NH₂)
2. BCarbonyl group (C=O) only
3. CCarboxyl group (–COOH)
4. DHydroxyl group (–OH)

How can you get solid salt back from salt water?

1. AEvaporate the water
2. BFilter the solution
3. CFreeze the solution and lift out the salt
4. DUse a magnet

Drops of water form on the outside of a glass of ice water. Where does this water come from?

1. AWater leaks through tiny holes in the glass
2. BWater vapour in the air condenses on the cold glass
3. CThe ice evaporates through the glass
4. DThe glass releases water when it gets cold

A reaction has a theoretical yield of 20 g, but only 15 g of product is collected. What is the percent yield?

1. A5%
2. B133%
3. C25%
4. D75%

2090 J of heat is added to 50 g of water (specific heat 4,18 J/g·°C). By how much does its temperature rise?

1. A41,8 °C
2. B5 °C
3. C20 °C
4. D10 °C

Why does drinking seawater make dehydration worse?

1. ASeawater is hypertonic, so the body loses extra water getting rid of the salt
2. BSeawater contains no water molecules the body can use
3. CSeawater is hypotonic, so water rushes into cells and makes them burst
4. DSeawater is isotonic, so it cannot be absorbed