Which of these is a chemical property of aluminum? it is used to conduct electricity. it has 13 protons. its boiling point is 2467°c. it combines with oxygen to form aluminum oxide.

It combines with oxygen to form aluminium oxide, it's a chemical property and all others are physical properties of aluminium

It combines with oxygen to form aluminium oxide is the correct answer.

You would be correct, boiling water does disinfect contamination.    the property of disinfecting means to kill  germs, bacteria and other pathogens or contamination  that might cause an infection or cause a person to become sickly. a couple methods of disinfecting are using soap, other cleaning supplies or by simply "boiling" the contaminate.  the reason why boiling water disinfects certain attributes is because some cells cannot survive the heat and pressure.