The new Thirteenth Edition builds on the Twelfth
EditionÉs major revision, in which every word
and piece of art was scrutinized by all the
authors to increase its effectiveness. Placing a
greater emphasis on research, this edition is
more tightly integrated with MasteringChemistry
(optional) , the leading online homework,
tutorial, and assessment programÍ resulting in
an unparalleled teaching and learning package
that personalizes learning and coaches students
toward understanding and mastery of tough
chemistry topics.