Werkblad Scheikunde voor toelatingsexamens verpleegkunde met antwoorden

What is osmosis?

1. AThe movement of solute particles against a gradient using energy
2. BThe movement of water across a semipermeable membrane
3. CThe dissolving of a gas in a liquid
4. DThe breaking of a solid into ions

Hoe heet een verticale kolom van het periodiek systeem?

1. AEen groep
2. BEen reeks
3. CEen periode
4. DEen schil

What does the octet rule state?

1. AEvery stable atom has exactly 8 protons in its nucleus
2. BAn atom can form a maximum of 8 covalent bonds
3. CAtoms tend to gain, lose or share electrons to get 8 outer electrons
4. DEvery stable molecule contains exactly 8 atoms

For the gas reaction N₂ + 3H₂ ⇌ 2NH₃, what is the effect of increasing the pressure?

1. AThe NH₃ breaks down completely
2. BThere is no effect on the equilibrium
3. CThe equilibrium shifts to the right, toward NH₃
4. DThe equilibrium shifts to the left, toward N₂ and H₂

What are London dispersion forces?

1. AStrong bonds formed by transferring electrons
2. BWeak, temporary attractions caused by shifting electrons in molecules
3. CAttractions between a hydrogen atom and a metal ion
4. DForces that hold protons together in the nucleus

What feature makes a hydrocarbon an alkene?

1. AOnly carbon–carbon single bonds
2. BA ring of six carbon atoms with no hydrogen
3. CAt least one carbon–carbon double bond
4. DAn –OH group

Which phrase best describes a 0,001 M solution of hydrochloric acid?

1. AA dilute solution of a strong acid
2. BA dilute solution of a weak acid
3. CA concentrated solution of a weak acid
4. DA concentrated solution of a strong acid

Why is incomplete combustion of fuel in a poorly ventilated room dangerous?

1. AIt produces nitrogen, which replaces oxygen in the blood
2. BIt produces extra oxygen, which damages the lining of the lungs over time
3. CIt produces carbon monoxide, which binds to haemoglobin and blocks oxygen transport
4. DIt produces water vapour, which is toxic