The specific heat of aluminum is 0.9 j/g k. how much heat is lost as a 100 gram sample of aluminum is dropped into a beaker of water and its temperature drops from 100°c to 25°c?

Energy=mass*SHC*temp change
=100*0.9*75
=6750J

It won't lose or gain electrons if it's a covalent bond it shares the electrons with another atom or atoms. if it is an ionic bond it will lose the 3 electrons on the outer shell and become a positively charged ion.  credit goes to @sunshinebaby of answers.yahoo.com.