uses of iron/steel

Question 1

State all uses of zinc

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Answer 1

1) galvanising- of iron and steel to prevent corrosion and rusting electrolytically
2) alloys- zinc is used to make a hard alloy called brass which contains 30% zinc and 70% copper

Question 2

describe use of stainless steel

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Answer 2

• strong and resistant to corrosion
• used in cutlery and sinks
• 20% chromium 10% nickel

Question 3

describe use of mild steel

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Answer 3

• soft and malleable
• car bodies and wires
• 0.25% carbon

Question 4

State all uses of Aluminium

Answer 4

1) low density - aeroplanes

2) non toxic, resistant to corrosion and acidic foods - food cans and containers

Question 5

State all uses of copper

Answer 5

1) good conductor of electricity and malleable - electrical wires
2) non reactive/toxic and resistant to corrosion - water pipes