Reminder to do past papers!

http://www.boardofstudies.nsw.edu.au/hsc_exams/ - board of studies HSC exam papers!

Length: 4 minutes

Introduction to chapter (Ethylene and addition polymer)

Length: 11 minutes

1. Constructing chemical equations (HSC chemistry)

Length: 16 minutes

2. Industrial source of ethylene (HSC chemistry)