boiling of hydrocarbons with Why is less demand for flammability with viscosity, a given formula. the thicker oils that result increasing molecular Teachit Science flammability. from fractional distillation? size. Ask pupils to Describe and explain resource explain the precautions These properties influence the separation of Pupils link the products of taken during this how hydrocarbons are crude oil by fractional complete combustion of investigation. separated and how they are distillation. alkanes with global warming. used as fuels. Identify the products of Describe, explain and combustion of alkanes. Knowledge of trends in exemplify the properties of hydrocarbons processes of Pupils use the whole is limited to boiling points, fractional distillation. classroom to model a viscosity and flammability. Explain how modern fractionating column. life is crucially Points of exit for The many hydrocarbons in dependent upon fractions provided by oil may be separated hydrocarbons. gaps between tables. into fractions, each of which Pupils can be given contains molecules with a cards with: similar number of carbon atoms, by fractional name of fraction distillation. boiling point drawing of length of The fractions can be chain processed to produce fuels molecular formula. and feedstock for the petrochemical industry. Other pupils have cards which provide Many of the on which detail about the our modern lifestyle column, eg 'heat depends such as petrol, source', temperatures diesel oil, kerosene, heavy within column. They
boiling viscosity, flammability. These properties influence how hydrocarbons are separated and how they are used as fuels. Knowledge of trends in properties of hydrocarbons is limited to boiling points, viscosity and flammability. The many hydrocarbons in oil may be separated into fractions, each of which contains molecules with a similar number of carbon atoms, by fractional distillation. The fractions can be processed to produce fuels and feedstock for the petrochemical industry. Many of the on which our modern lifestyle depends such as petrol, diesel oil, kerosene, heavy of hydrocarbons with a given formula. Describe and explain the separation of crude oil by fractional distillation. Describe, explain and exemplify the processes of fractional distillation. Explain how modern life is crucially dependent upon hydrocarbons. Why is less demand for the thicker oils that result from fractional distillation? Pupils link the products of complete combustion of alkanes with global warming. flammability with increasing molecular size. Ask pupils to explain the precautions taken during this investigation. Identify the products of combustion of alkanes. Pupils use the whole classroom to model a fractionating column. Points of exit for fractions provided by gaps between tables. Pupils can be given cards with: name of fraction boiling point drawing of length of chain molecular formula. Other pupils have cards which provide detail about the column, eg 'heat source', temperatures within column. They Teachit Science resource
AQA-8465-SOW-GSE.DOCX