Electrolysis And Extraction Of Aluminium

Question 1

• What happens during electrolysis?

Answer 1

• During electrolysis positively charged ions move to the cathode receiving atoms and are reduced.
• Negatively charged ions move to anode and lose electrons and is oxidised.

Question 2

• During the extraction of aluminium what is the substance called?

Answer 2

• The broken down substance is caked the electrolyte.

Question 3

• How is aluminium extracted?

Answer 3

• The ore of aluminium (bauxite Al2O3)

Is purified to a white powder (aluminium oxide) from which aluminium is extracted.