Metal Extraction Quiz

What is the purpose of using electrolysis in metal extraction?

• To separate metal ions from a solution or molten substance and deposit them as pure metal at the electrodes

• To remove oxygen from the metal compound

• To extract metals that can resist natural weathering processes

• To form a metal element from a compound

How are metals above carbon in the reactivity series separated from their ore?

• By reduction

• By displacement reactions

• By electrolysis

• By natural weathering processes

What method is used to extract metals below carbon in the reactivity series from their ore?

• Electrolysis

• Natural weathering processes

• Displacement reactions

• Reduction

Which metals can be found as native metals due to their resistance to natural weathering processes?

• Gold and platinum

• Aluminum and magnesium

• Iron and copper

• Silver and lead

What is the main method used to extract gold and platinum from their ores?

• Reduction

• Electrolysis

• Mining

• Displacement reactions

What is the process of reduction in metal extraction?

• The formation of a metal element from a compound

• The separation of metal ions from a solution or molten substance

• The extraction of metals that can resist natural weathering processes

• The removal of oxygen from the metal compound

Why are very unreactive metals such as gold and platinum mined as the pure element?

• Because they are found in large amounts

• Because they are too reactive to form compounds

• Because they are obtained through reduction or smelting

• Because they are separated from their ore by electrolysis

What is the method used to extract metals that cannot be obtained through reduction or smelting?

• Electrolysis

• Displacement reactions

• Natural weathering processes

• Reduction

What is the process of electrolysis in metal extraction?

• The extraction of metals that can resist natural weathering processes

• The separation of metal ions from a solution or molten substance and depositing them as pure metal at the electrodes

• The formation of a metal element from a compound

• The removal of oxygen from the metal compound

Which metals occur native in large amounts due to their resistance to natural weathering processes?

• Silver and lead

• Iron and copper

• Aluminum and magnesium

• Gold and platinum