Werkblad Scheikunde voor toelatingsexamens verpleegkunde met antwoorden

How does increasing the concentration of a reactant in solution usually affect the reaction rate?

1. AThe rate stays the same
2. BThe reaction stops
3. CThe rate increases
4. DThe rate decreases

Which method separates sand from water?

1. AFiltration
2. BChromatography
3. CEvaporation of the sand
4. DDistillation

In a solution, what is the solvent?

1. AThe gas given off when a solid dissolves
2. BThe substance that is dissolved, usually present in the smaller amount
3. CAny solid that will not dissolve, however long it is stirred
4. DThe substance that does the dissolving, usually present in the larger amount

What is the conjugate base of nitric acid, HNO₃?

1. ANO₂⁻
2. BNO₃⁻
3. CH₂NO₃⁺
4. DHNO₂

What is carbon-14 dating used for?

1. AFinding the exact age of rocks that are billions of years old
2. BDetecting carbon monoxide in a room
3. CMeasuring body temperature
4. DEstimating the age of material that was once alive

Nitrogen is in group 15 of the periodic table. How many valence electrons does a nitrogen atom have?

1. A7
2. B15
3. C3
4. D5

Een ballon bevat 2,0 L gas bij 300 K. Bij constante druk wordt hij verhit tot 450 K. Wat is het nieuwe volume?

1. A2,0 L
2. B4,5 L
3. C3,0 L
4. D1,3 L

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. A20 °C
2. B41,8 °C
3. C5 °C
4. D10 °C