Werkblad Scheikunde voor toelatingsexamens verpleegkunde met antwoorden

What does the rate of a reaction measure?

1. AHow much energy the final products contain
2. BHow hot the reaction gets
3. CHow quickly reactants are used up or products are formed
4. DHow much product forms in total by the end

What does organic chemistry study?

1. AOnly compounds found in plants
2. BOnly the noble gases
3. CCompounds made of metals
4. DCompounds based on carbon

According to collision theory, what must happen for particles to react?

1. AThey must have the same mass
2. BThey must collide with enough energy and the right orientation
3. CThey must both be in the solid state at the same time
4. DThey must stay completely still next to each other

A room is at 25 °C. What is this temperature in kelvin?

1. A−248 K
2. B77 K
3. C248 K
4. D298 K

Water has a high specific heat capacity. How does this help the human body?

1. AIt makes the blood more acidic
2. BIt helps keep body temperature stable
3. CIt makes water a poor solvent for salts
4. DIt allows oxygen to dissolve in water more easily

Which property stays the same whether you have a small sample or a large sample of a pure substance?

1. ATotal heat content
2. BVolume
3. CMass
4. DDensity

Frying an egg turns the clear egg white solid and white. What happens to the proteins?

1. AThey are denatured: their shape changes, but the peptide bonds stay intact
2. BThey are burned to carbon dioxide and water
3. CThey are converted into fats
4. DThey are hydrolysed, so the peptide bonds break into separate amino acids

Orange bromine water is shaken with two hydrocarbons. With hexene it turns colourless; with hexane it stays orange. What does this show?

1. AHexene is an alcohol and hexane is an acid
2. BBoth contain double bonds, but hexane reacts more slowly
3. CHexene contains a C=C double bond; hexane does not
4. DHexane contains a C=C double bond; hexene does not