Hydrocarbons

Intermediate 2 ChemistryUnit 2

Learning outcomes Success criteriaUnderstand what a “hydrocarbon” is.

Define the term “hydrocarbon”.

Give examples of substances which are hydrocarbons.

Identify a substance as a hydrocarbon, given its name, structure or formula.

Combustion

Intermediate 2 ChemistryUnit 2

Learning outcomes Success criteriaKnow what is meant by a “fuel”.

Know what is meant by “combustion”.

Understand the difference between complete and incomplete combustion.

•Define the term “fuel”.•Name examples of common fuels.

•Define the term “combustion”.

•Describe examples of situations where complete and/or incomplete combustion will take place.•Write a word equation for the complete combustion of a hydrocarbon.•Write a word equation for the incomplete combustion of a hydrocarbon.

Combustion 2

Intermediate 2 ChemistryUnit 2

Learning outcomes Success criteriaKnow how to predict what products will be produced when a substance is burned.

Know characteristic properties of carbon dioxide and carbon monoxide.

•Name the products produced given the name of the element present in a fuel.

•Describe the properties of carbon dioxide and carbon monoxide, including:

– State at room temperature

– Flammability

•State why high concentrations of carbon monoxide are dangerous.

•State the test for carbon dioxide gas, naming the chemical you would use and the result.

Cars and air pollution

Intermediate 2 ChemistryUnit 2

Learning outcomes Success criteriaUnderstand what products are produced in a petrol car engine.

Understand how air pollution from the combustion of hydrocarbons in petrol cars can be reduced.

Know examples of situations where sulphur dioxide is produced in burning.

•Name the products produced in a petrol car engine.•Explain how each substance is produced.•State which of the products are harmful.

•Explain how air pollution can be reduced, including:

– What a catalytic converter is.

– Examples of the reactions which a catalytic converter controls.

•Describe an example of a situation where sulphur dioxide is produced in burning.

Fractional distillation

Intermediate 2 ChemistryUnit 2

Learning outcomes Success criteriaUnderstand what crude oil is.

Understand how “fractional distillation” can be used as a separating technique.

Know what a “fraction” is.

•Classify crude oil as a compound or mixture.•Describe the composition of crude oil.

•Define “fractional distillation”.•State what property of substances enables them to be separated by fractional distillation.

•Define a “fraction”.•Name the fractions produced from crude oil.

Learning outcomes Success criteriaUnderstand how the properties of fractions vary down a fractionating column.

Understand how the uses of fractions are related to their boiling point.

•Label a diagram of a fractionating tower to show the trend in

– ease of evaporation– viscosity– flammability– boiling point.

•Given the names of fractions, you can state how they compare in terms of these properties.

•Explain this trend in terms of:– Molecular size/mass

– Strength of forces between molecules– How much energy is required to break these forces

•State a use for each fraction.

•Justify why a particular fraction is appropriate for its use.