Uses of metals

Which of following is not the use of iron?

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Why is copper used to make electricity wire (電線) ?

• It looks appealing (吸引力).

• It is non-toxic (無毒).

• It conducts electricity well.

• It is light.

Which of following is not the use of aluminium?

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• 
• 
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Which of the following metals can be used to make flashbulb?

• Mg

• Cu

• Fe

• Ag

Choose the INCORRECT sentence.

• Tin (錫) is non-toxic.

• Mercury is toxic.

• Copper is corrosion resistant (耐腐蝕的).

• Gold and silver does not conduct electricity.