Chemistry 0620 · IGCSE · Extraction of metals

Extraction of metals — practice question

The table presents the properties of four substances.
(a)[2]

Complete the table to indicate the electrical conductivity of solid diamond and molten sulfur.

(b)[1]

Give one piece of evidence from the table that indicates sulfur is a simple covalent substance.

(c)[2]

What evidence in the table shows that potassium bromide is an ionic compound?

(d(i))[1]

State one property of aluminium shown in the table that makes it suitable for aircraft manufacture.

(d(ii))[1]

What method is used to obtain aluminium from aluminium oxide?

(e)[2]

Predict the products formed during this electrolysis at the positive electrode (anode) and the negative electrode (cathode).

(f(i))[1]

Which two statements describe the structure and bonding in diamond? Tick two boxes. Diamond contains ionic bonds. Diamond has a giant covalent structure. Diamond is a simple molecular substance. Diamond contains covalent bonds.

(f(ii))[1]

Give one use of diamond.

Worked solution & mark scheme

This 11-mark question has a full step-by-step worked solution and mark scheme. One marking point: electrical conductivity of solid diamond: does not conduct electricity

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