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

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

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

How would you best extract iron from haematite (iron ore)?

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

Name a metal that could be extracted from its metal oxide by heating with carbon.

A method of extracting the most reactive metals, like potassium or aluminium.

How would you extract Silver?

What method would be used in order to extract potassium?

Which of these metals were the first to be discovered?

Which of these metals was the last to be discovered?

Which of these metals requires the most energy to be separated from its ore?

Which of these metals requires the least energy to be separated from its ore?

Which of these metals can't be extracted by carbon reduction?

Which of these metals is most likely to be found locked in an ore?