Extraction of Metals from its Ore (1)

Methods to extract reactive metals

Electrolysis (for metals that are more reactive than carbon) and reduction by carbon (for metals that are less reactive than carbon)

The effect of the purification process of bauxite

Creates a residue in a form of red sludge that is toxic

Metal that can be extracted through electrolysis

Aluminium, magnesium, sodium and potassium

Metals that can be extracted through reduction by carbon

Zinc, iron, selenium and lead

The other name of Aluminium oxide

Alumina

Metals (1)

Usually exist as compounds or mixed with other substances, such as rocks and dirt

Metals (2)

Compounds containing metals are also known as ore or mineral and exist as metal oxides, metal sulphides or metal carbonate

Metals (3)

Non reactive metals such as gold and silver do not need to be extracted because they exist as metal elements

Metals (4)

Reactive metals like iron and aluminium require a particular way to be extracted from their respective ores

Example of non reactive metals (1)

Gold