10G1 Properties of Metals

The diagrams show two tests on a piece of metal.

What are the results of these tests?

• Test 1: Lamp does not light

  Test 2: Metals break to pieces

• Test 1: Lamp does not light

  Test 2: Metals dents but does not break

• Test 1: Lamp lights

  Test 2: Metals break to pieces

• Test 1: Lamp Lights

  Test 2: Metals dents but does not break

The table shows some metals and their uses.

For which metal is the correct reason given for the stated use?

• Metal: Aluminium

  Use: Manufacture of airplane wings

  Reason: Strength and high density

• Metal: Copper

  Use: Electrical wiring

  Reason: Good conductor of heat

• Metal: Iron

  Use: Manufacturing of stainless steel

  Reason: Rust

• Metal: Zinc

  Use: Galvanizing iron

  Reason: Zinc is more reactive than iron

Which element is mixed with zinc to make brass?

• aluminium

• copper

• iron

• magnesium

Which element is mixed with copper to make bronze?

• aluminium

• Tin

• Zinc

• Carbon

Brass is an alloy. Brass contains copper and zinc.

Which structure represents the arrangement of atoms in brass?

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