"Item C1d Part2"
Module C1 Item C1d Part 2 Making crude oil useful In this lesson students should learn: Other Items in this book about some of the environmental and political problems C1e, C1g, P2c associated with the extraction and distribution of crude oil Other Items in the Gateway Science series how to describe the cracking process C6g how to interpret data about the supply and demand of crude oil fractions ICT Internet research Student book pages 108–109 Worksheets C1d 3, C1d 4, C1d 5, C1d 6 Technician’s notes C1d 2 Worksheet answers C1d 2 alkane alkene catalyst cracking double bond naphtha oil slick polymer There are no Can-Do Tasks for this Item. Students to list the names of all the countries they think produce oil and compare their list with a response partner. Quick-fire questions on the recognition of the first 10 alkanes and their names. Recall the fractions of fractional distillation and their uses. Learning outcomes Understand that crude oil is often found in the Earth’s crust and may have to be pumped to the surface Describe some of the environmental problems involved in the exploitation of crude oil: oil slicks; damage to wildlife and beaches Label the laboratory apparatus used for cracking liquid paraffin Describe cracking as a process that: needs a catalyst and a high temperature converts large hydrocarbon molecules into smaller ones that are more useful makes more petrol Teaching and learning activities Resources Ask the students to read ‘Problems in extracting crude oil’ on page 108 of the student book. Student book They can then complete Worksheet C1d 3. They will need Internet access for questions Worksheet C1d 3 4 and 5. Internet access Learning outcomes Explain some of the environmental problems involved in the exploitation of crude oil Describe cracking as a process that: converts large alkane molecules into smaller alkane and alkene molecules makes useful alkene molecules because they can be used to make polymers Interpret data about the supply and demand of crude oil fractions (no recall expected) Teaching and learning activities Resources Class demonstration – The cracking process. Demonstrate the cracking of liquid paraffin. Worksheet C1d 4 Alternatively, if resources allow, students could try this experiment themselves. Technician’s notes C1d 2 Class activity – The supply and demand of crude oil fractions. Ask the class to research the Worksheet C1d 5 supply and demand of crude oil fractions using the Internet. They should present their Internet access findings in a brief report covering the supply and demand of at least two fractions. Is there a difference between winter and summer demand for any of the fractions? Remind them that a bar chart is often a good way to present data. Learning outcomes Discuss in simple terms the political problems associated with the exploitation of crude oil Explain how cracking helps an oil refinery match its supply of useful products such as petrol with the demand for them Teaching and learning activities Resources Class activity – Problems of oil exploitation. Ask the students to research a problem Worksheet C1d 6 associated with oil exploitation and the possible solutions to it (from a choice of three). Internet access They should write a report of their findings. Relevant books and articles (if available) In pairs, write down five things that we will not be able to do when crude oil runs out. In pairs, write down five things that we need to do to prepare for when crude oil runs out. Imagine you are a cabinet minister. Oil reserves have been found to be much less extensive than was originally thought. All countries are stopping oil exports to any other country and you need to cut consumption by half. What will be your recommendation? LOW DEMAND STANDARD DEMAND HIGH DEMAND 11 Cars, other transport, heating 14 Medicines, plastics, dyes 18 It cracks larger molecules into 12 For example, damage to the 15 High temperature, a catalyst smaller, more useful ones environment 16 CnH2n+2 13 By cracking 17 250 tonnes are made but only 50 tonnes are needed; excess could be cracked to make more petrol