Extraction of metals plenary

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 are unlikely to be found uncombined in the earth's crust?

• gold

• potassium

• aluminium

• silver

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

• aluminium

• copper

• zinc

Which series is used to predict the reactions of metals with carbon and other elements?

• reactionary series
• reaction series
• redox series
• reactivity series

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

What method would be used in order to extract potassium?

• Heating with Carbon

• The blast furnace

• Potassium is found uncombined

• Electrolysis