Werkblad Scheikunde voor toelatingsexamens verpleegkunde met antwoorden

Which group of biological molecules includes fats, oils and cholesterol?

1. ANucleic acids
2. BCarbohydrates
3. CLipids
4. DProteins

What does the subscript 2 in H₂O tell you?

1. AEach molecule contains two oxygen atoms
2. BThere are two water molecules
3. CWater has a charge of 2
4. DEach molecule contains two hydrogen atoms

Plants absorb energy from sunlight during photosynthesis. How is photosynthesis classified?

1. ANeutralisation
2. BExothermic
3. CNuclear
4. DEndothermic

Which nuclear process powers the Sun?

1. AFission of uranium into smaller nuclei
2. BFusion of hydrogen nuclei to form helium
3. CAlpha decay of helium
4. DCombustion of hydrogen gas with oxygen in its core

A red blood cell is placed in a concentrated (hypertonic) salt solution. What happens?

1. AWater leaves the cell, which shrinks
2. BThe cell stays the same size and shape
3. CSalt leaves the cell, which swells
4. DWater enters the cell, which swells and may burst

In the ideal gas law, PV = nRT, what does n stand for?

1. AThe number of atoms per molecule
2. BThe number of molecules of gas
3. CThe density of the gas
4. DThe number of moles of gas

Welke stof wordt gereduceerd in de reactie CuO + H₂ → Cu + H₂O?

1. AWaterstof, omdat het zuurstof opneemt
2. BWater, omdat het wordt gevormd
3. CKoperoxide, omdat koper elektronen opneemt
4. DKoper, omdat het elektronen afstaat

When water boils, what is overcome?

1. AHydrogen bonds between water molecules
2. BThe ionic bonds between H⁺ and O²⁻
3. CThe covalent O–H bonds inside each molecule
4. DThe forces holding the oxygen nucleus together