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AQA C1a Metals and Rocks
A set of revision cards
20
Chemistry
Not Applicable
10/21/2010

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Term
Native
Definition
A metal so unreactive it is found uncombined with other elements.
Term
Ore
Definition
A rock containing enough of a metal or metal compound to make it worth extracting.
Term
Reduction
Definition
A chemical process which involves removing oxygen from a metal compound.
Term
metal oxide
Definition
A chemical compound containing a metal combined with oxygen.
Term
Haematite
Definition
The main or from which iron is extracted.
Term
Coke
Definition
The form of carbon used as a fuel and reducing agent in a blast furnace.
Term
Cast Iron
Definition
Iron with about 4% carbon produced in a blast furnace.
Term
Steel
Definition
An alloy of iron and carbon
Term
Alloy
Definition
A mixture of a metal with other metallic or non-metallic elements.
Term
Mild steel
Definition
A steel with less than 0.25% carbon. Easily shaped.
Term
High carbon steel
Definition
A hard steel with over 1.5% carbon. Used for tools etc.
Term
Stainless Steel
Definition
An alloy of iron carbon and chromium
Term
Brass
Definition
An alloy of copper and zinc
Term
Bronze
Definition
An alloy of copper and tin.
Term
Smart alloys
Definition
Alloys with special properties such as Shape Memory Alloys.
Term
Transition Metals
Definition
The block of metals between group 2 and 3 in the Periodic Table.
Term
Electrolysis
Definition
The method of extracting copper or aluminium by passing electricity through molten ore or a solution of the ore.
Term
Corrosion
Definition
The reaction of metals with oxygen from the air.
Term
Density
Definition
The mass of a given volume of a substance , usually 1cm3
Term
Continuous variable
Definition
A variable that can have any value.
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