Heinemann chemistry 2 : VCE units 3 & 4 / coordinating authors : Chris Commons, Penny Commons ; authors: Lanna Derry, Bob Hogendoorn, Elissa Huddart, Pat O'Shea, Maria Porter, Geoff Quinton, Bob Ross, Patrick Sanders, Robert Sanders ; contriubting authors: Drew Chan, Erin Bruns, Vicky Ellis, Elizabeth Freer, Simon Gooding ; indexer: Max McMaster