Extraction of metals

What is an ore?

• a solid metal
• a rock cantaining a metal combined with other elements
• an element
• an object used to row a boat

What is the removal of oxygen from a substance called?

• reduction
• extraction
• electrolysis
• oxidation

Which element cannot be extracted from its ore by reduction with carbon?

• iron
• magnesium

• copper
• lead

What is the name of the process that uses electricity to separate the elements in a compound?

• reduction
• electrolysis
• extraction
• mining

How could you extract sodium from molten sodium chloride?

• reduction by carbon
• electrolysis
• decomposition
• oxidation

How would you best extract iron from haematite (iron ore)?

• reduction by carbon
• electrolysis
• decomposition
• oxidation

Name a metal that could be extracted from its metal oxide by heating with carbon.

• iron
• aluminium
• gold
• magnesium

A method of extracting metals from their ores that are more reactive than carbon.

• carbon extraction
• fractional distillation
• electrolysis
• cracking

How would you extract Silver?

• Heating with coke

• Electrolysis

• The blast furnace

• Silver is found uncombined

What method would be used in order to extract potassium?

• Heating with Carbon

• The blast furnace

• Potassium is found uncombined

• Electrolysis