What feature of the diagram indicates that molten magnesium has a lower density than molten magnesium chloride?
Magnesium is one product of this electrolysis. State the name of the other one.
Suggest why an unreactive gas, rather than air, is passed over the surface of the molten magnesium.
Suggest the name of an unreactive gas that could be used.
Which metal is most suitable to make the body of an aircraft? Give a reason for your answer.
Which metal is most suitable to use for overhead power cables? Give a reason for your answer.
Which two metals in the table are transition elements?
Give two properties of transition elements which are not shown by Group I elements.
What is meant by the term alloy?
Give one reason why alloys are used instead of pure metals.