Pearson - 9Fe - Extracting Metal

Which metal is known to occur uncombined in its native state?

• Iron

• Gold

• Aluminium

• Zinc

What is an ore?

• A reducing agent

• A type of metal

• A chemical reaction

• A rock containing metal or metal compounds

What is the main reducing agent used in the extraction of iron from haematite?

• Oxygen

• Carbon

• Aluminium

• Hydrogen

What type of reaction occurs when carbon displaces iron from iron oxide?

• Combustion

• Redox

• Decomposition

• Synthesis

What is produced when carbon is oxidized in the extraction of iron?

• Iron

• Carbon monoxide

• Carbon dioxide

• Oxygen

Which method is used to extract very reactive metals?

• Filtration

• Smelting

• Heating with carbon

• Electrolysis

What is the main ore of aluminium?

• Bauxite

• Haematite

• Zinc oxide

• Copper oxide

Why is electrolysis not commonly used for iron extraction?

• It requires too much electricity

• Iron is not reactive enough

• It is too cheap

• It is too simple

Which of the following metals can be extracted by heating with carbon?

• Aluminium

• Copper

• Gold

• Platinum

What is the role of carbon in the extraction of metals?

• Reducing agent

• Oxidizing agent

• Inert gas

• Catalyst