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Exam questions

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Total cards: 10•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (10)

#1
Front (Question)

What is meant by the term isotopes

Back (Answer)

An atom of an element with the same number of protons and a different number of neutrons.

#2
Front (Question)

Chemists are able to predict the shape of a simple covalent molecule from the number of electron pairs surrounding the central atom Explain how this enables chemists to predict the shape

Back (Answer)

Pairs of electrons repel Shape is determined by number of lone and bond pairs

#3
Front (Question)

First ionisation energy

Back (Answer)

Energy required to remove an electron from each atom in one mole of gaseous atoms

#4
Front (Question)

First ionisation energy of oxygen is less than the first ionisation energy of fluorine Explain why

Back (Answer)

Oxygen has a higher atomic radius Smaller nuclear charge Weaker nuclear attraction

#5
Front (Question)

Sulfate (IV)

Back (Answer)

SO3 2-

#6
Front (Question)

Compound of magnesium that could be used to treat heartburn

Back (Answer)

Magnesium hydroxide

#7
Front (Question)

Metal carbonate + acid >

Back (Answer)

Metal?? + water + carbon dioxide

#8
Front (Question)

In another experiment, a student attempts to make a solution of strontium chloride by adding chlorine water to aqueous strontium bromide Describe what the student would observe

Back (Answer)

Mixture would turn orange

#9
Front (Question)

Chlorine is more reactive than bromine Explain why

Back (Answer)

Chlorine gains an electron more easily Chlorine is smaller and has less electron shielding Stronger nuclear attraction

#10
Front (Question)

Explain why there is a difference in the boiling points of HCl and F2

Back (Answer)

F2 has induced dipole attraction HCl has permanent dipole attraction Induced is weaker Permanent requires more energy to overcome