iGCSE Metal Extraction

What method would be used in order to extract potassium?

• Heating with Carbon
• The blast furnace
• Potassium is a Native metal
• Electrolysis

In the blast furnace, limestone is added to...

• Create more heat
• Turn iron oxide into pure iron
• Remove acidic impurities

How would you extract Silver?

• Heating with coke
• Electrolysis
• The blast furnace
• Silver is a native metal

What method of extraction would be used to extract iron from iron ore?

• Electrolysis

• Heating with Coke/Carbon

• Iron is a native metal

Environmental issue of electrolysis is

• makes of sulphur compounds which contributes to acid rain
• makes carbon dioxide which contributes to global warming
• makes carbon dioxide which contributes to ozone depletion
• makes of sulphur compounds which contributes to global dimming

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

• carbon extraction
• fractional distillation
• electrolysis
• cracking

haematite is the name for

• Zinc Oxide
• Iron ore
• Calcium carbonate
• silver ore

What is the removal of oxygen from a substance called?

• reduction
• extraction
• electrolysis
• oxidation

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

• reduction
• electrolysis
• extraction
• mining