CHAPTER 1 1. Fuels - Define “renewable”. - What are the differences between fossil fuels and biofuels? - What are coal, crude oil and natural gas comprised of? Where are they sourced from? - Describe the principles of fractional distillation. - What are biogas, bioethanol and biodiesel comprised of? How are they produced? - Write the chemical equation for the photosynthesis of glucose in plants. - Write the chemical equation for the fermentation of glucose. 2 - What energy transformations occur in a typical coal-fired power station? - What is the greenhouse effect? What is the enhanced greenhouse effect? - Define “carbon neutral”. 3 - What is petrodiesel comprised of? Where is it sourced from? - What is trans esterification? What reacts/is produced in this process? 4