Werkblad Scheikunde voor toelatingsexamens verpleegkunde met antwoorden

Which quantity is the same for 1 mole of any substance?

1. AThe number of atoms per molecule
2. BThe mass in grams
3. CThe volume as a liquid
4. DThe number of particles

Welk type binding ontstaat wanneer elektronen tussen atomen worden gedeeld?

1. AEen metaalbinding
2. BEen kernbinding
3. CEen covalente binding
4. DEen ionbinding

Hoe zijn de elementen in het moderne periodiek systeem geordend?

1. ANaar oplopend aantal neutronen
2. BNaar oplopend atoomnummer
3. CNaar de datum van ontdekking
4. DAlfabetisch op hun symbolen

A gas mixture contains nitrogen at 600 mmHg, oxygen at 150 mmHg and other gases at 10 mmHg. What is the total pressure?

1. A253 mmHg
2. B760 mmHg
3. C750 mmHg
4. D600 mmHg

An exothermic reaction is at equilibrium. What happens if the temperature is raised?

1. AThe equilibrium shifts toward the products, raising the yield
2. BThe equilibrium does not change
3. CThe equilibrium shifts toward the reactants
4. DThe reaction becomes endothermic

Magnesium forms Mg²⁺ ions and oxygen forms O²⁻ ions. What is the formula of magnesium oxide?

1. AMgO
2. BMg₂O
3. CMg₂O₂
4. DMgO₂

A student tests whether water temperature affects how fast sugar dissolves. Which set of factors should be kept the same in every trial?

1. AThe water temperature and the dissolving time
2. BOnly the colour of the cup
3. CNothing, because changing several factors at once gives more useful data
4. DThe mass of sugar, the type of sugar, the volume of water and the amount of stirring

Wanneer suiker in water oplost, waarom is dat dan geen chemische verandering?

1. AEr komt altijd warmte vrij wanneer suiker oplost
2. BDe suiker wordt vernietigd en vervangen door water
3. CSuiker reageert met water tot een nieuwe verbinding
4. DDe suikermoleculen blijven suiker en kunnen worden teruggewonnen