aluminium is a fairly reactive metal that often has a protective layer on due to oxidation
with air. this means it sometimes seems reluctant to react. name the protective layer.

C) overlapping p orbitals

Ithink this is what you meant. the temperature at which a liquid begins to boil is called the boiling point. the boiling point of water is 212°f or 100°c.  and at that point will start to turn into steam (gas)