Chemistry - Chapter 3 (P2)

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What are alloys?
An alloy is a mixture of metals or metals and carbon
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Why don't we use pure iron?
We don't use pure iron because, it is too bendy and soft for it to be useful
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What do we do with the pure iron instead?
CConverted into steel (which is an alloy)
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In comparison with steel, what is pure iron like?
Softer
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Which type of steel is likely to be used for making cutlery?
Stainless steel
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Why is titanium expensive to extract from its ore?
It involves several stages, for it to be extracted
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Copper can be obtained by reacting solutions of copper compounds with scrap iron. This sort of reaction is called:
Displacement
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Which are harder, pure metals or alloys?
Alloys are harder
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Why does aluminium not corrode easily?
It has a thin layer of oxide - which stops air and water from getting into the metal
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Give 3 properties of titanium
High melting point, corrosion resistant, low density
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Give 3 properties of aluminium
Light density, good conductor of electricity and heat and corrosion resistant (thin layer of oxide)
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Property and use of low carbon steel
1) Easily shaped 2) Car bodies
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Property and use of high carbon steel
1) Very hard and inflexible 2) Blades for cutting tools, bridges
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Property and use of stainless steel
1) Corrosion resistant 2) Cutlery, containers for corrosive substances
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Card 2

Front

Why don't we use pure iron?

Back

We don't use pure iron because, it is too bendy and soft for it to be useful

Card 3

Front

What do we do with the pure iron instead?

Back

Preview of the front of card 3

Card 4

Front

In comparison with steel, what is pure iron like?

Back

Preview of the front of card 4

Card 5

Front

Which type of steel is likely to be used for making cutlery?

Back

Preview of the front of card 5
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