Extraction of lead

What is an ore?

• a solid metal

• a rock containing a metal combined with other elements, often oxygen

• an element

• an object used to row a boat

Which of these elements is unlikely to be found uncombined in the earth's crust?

• gold

• platinum

• aluminium

• silver

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

• iron

• aluminium

• copper

• lead

Many metals are extracted from their ores by heating them with carbon in huge furnaces. Which metal(s) cannot be extracted using this method?

• Aluminum

• Calcium

• Zinc

• Copper

Which statement is correct about extraction of iron from its ore?

• Iron is more difficult to extract than copper

• Iron is the easiest metal to extract

• Iron cannot be extracted from its ore

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

Which of these metals were the first to be discovered?

• potassium

• calcium

• gold

• platinum