| Method |
Precise Learning Objective |
Linked |
Question / Activity
(Designed for maximum working out) |
Stepping Stones |
Pitstop Check
(Thinking Map) |
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Crude oil is a finite resource found in rocks. Crude oil is the remains of an ancient biomass consisting mainly of plankton that was buried in mud. |
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Where does crude oil come from? |
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Crude oil is a mixture of a very large number of compounds. |
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Is crude oil a mixture of elements, compounds or both? |
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Most of the compounds in crude oil are hydrocarbons, which are molecules made up of hydrogen and carbon atoms only. |
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What is the definition of a hydrocarbon? |
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Most of the hydrocarbons in crude oil are hydrocarbons called alkanes. The general formula for the homologous series of alkanes is CnH2n+2 |
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Does crude oil contain mostly alkanes or alkenes? |
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The first four members of the alkanes are methane, ethane, propane and butane. |
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What are the names of the first four members of alkanes? Teach - Monkey's Eat Peanut Butter as recall for naming hydrocarbons |
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Alkane molecules can be represented in the following forms: C2H6 or displayed formula. |
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What is the general formula for alkane molecules? Students deduce the general formula by modelling hydrocarbons |
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Students should be able to recognise substances as alkanes given their formulae in these forms. |
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Which of the following are examples of alkanes: C4H10, C2H4, C5H12? Create a table with the name, symbol, diagram for the first four hydrocarbons
GF: suggest what the naming would be for other larger hydrocabons |
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Students do not need to know the names of specific alkanes other than methane, ethane, propane and butane. |
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Name the alkane with:
a) 1 carbon
b) 2 carbons
c) 3 carbons
d) 4 carbons Plenary quiz showing the structure, symbols and students have to name |
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