C1 3.1 Extracting Metals

Front 1

List examples of native metals and metal found in ores.

Back 1

Gold, silver, copper, iron, cobalt and nickel.

Front 2

Define an ore.

Back 2

A naturally occurring solid material from which a metal or valuable mineral can be extracted profitably.

Front 3

Describe reduction in terms of the removal of oxygen from a compound.

Back 3

Reduction is the loss of oxygen from a substance. For example, copper oxide can be reduced to form copper if it is reacted with hydrogen:
copper oxide + hydrogen → copper + water
CuO + H2 → Cu + H2O

Front 4

Using the reactivity series of metals identify which metals can be extracted from their oxides by reduction with carbon.

Back 4

Zinc, iron, tin, lead and copper are extracted by heating in the blast furnace with carbon (displacement reaction).

Front 5

Identify the reduction process from this description:
Iron oxide + carbon → iron + carbon dioxide

Back 5

Reduction reaction - Getting rid of the oxygen, leaving the metal. Extracted by heating with carbon in the blast furnace (reactivity series).

Front 6

Write a balanced equation to show the reduction of a metal oxide.

Back 6

magnesium + oxygen → magnesium oxide
Mg + O2 → MgO

2Mg + O2→ 2MgO