Aluminum is commonly extracted by electrolysis of aluminum oxide . Before it can be electrolyzed, the aluminum oxide must be molten. However, aluminum oxide has a melting point of over , which is very expensive to maintain. What is added to lower the melting point of the aluminum oxide before electrolysis?
Which of the following is an ore of aluminum?
What is the chemical compound of aluminum found in the greatest percentage in the ore used in the extraction process?