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WAEC Chemistry 2012 Paper

Question : 43

Total: 44

Brass is a mixture of

Solution:

Concept:

Brass is an alloy, which is a solid mixture of metals.

Explanation:

Brass is commonly made by mixing copper and zinc.

Copper is represented by the symbol

\mathrm{Cu}

Zinc is represented by the symbol

\mathrm{Zn}

Therefore, brass is a mixture of

\mathrm{Cu}

and

\mathrm{Zn}

The other options contain tin (

\mathrm{Sn}

), magnesium (

\mathrm{Mg}

), or lead (

\mathrm{Pb}

), which are not the main components of brass.

Answer:

\mathrm{Cu}

and

\mathrm{Zn}

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