There are some BBC Bitesize revision pages that could be useful.
- How are polymers and ethanol made from oil?
- How can plant oils be used?
- What are the changes in the Earth and its atmosphere?
Changes to the Earth & it's Atmosphere: Play Now | Play in Popup | Download Plant Oils & Food Additives Part 1: Play Now | Play in Popup | Download Plant Oils & Additives Part 2: Play Now | Play in Popup | Download
