Making Crude Oil Useful Learning Intention We are learning about how Crude oil is separated into fractions and why. How and why fractional distillation works. To use data to evaluate the use of different fuels Keyword s & Phrases Fractions Distillati on Fuels Crude Oil Evaluate Look at the following formula displayed on your starter activity sheet. Write down two facts about each molecule from its formula (3 marks) Starter Activity
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Revision Lesson: Making crude oil useful (Fractional Distillation and Cracking) Part 1
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Making Crude Oil UsefulLearning Intention
We are learning about how Crude oil is separated into
fractions and why.How and why fractional
distillation works.To use data to evaluate the use
of different fuels
Keywords& Phrases
FractionsDistillation
FuelsCrude OilEvaluate
Look at the following formula displayed on your starter activity sheet. Write down two facts about each molecule from its formula (3 marks)
Starter Activity
TemperatureSaturated
UnsaturatedFamily nameWhat Group?
General FormulaBromine waterMore reactive
DensityIntermolecular-force
Look at the following formula displayed on your starter activity sheet. Write down two facts about each molecule from its formula (3 marks)
Starter Activity
HintsHint
Why is crude oil separated into Fractions?
Watch video clip:http://www.youtube.com/watch?v=26AN1LfbUPc
i. What is fractional distillation? ii. Explain how and why fractional
distillation works.
Hints
Crude Oil Mixture
FractionsBoiling points
Large moleculesSmall molecules
More on properties of fractions
1. What can you say about the fractions that are at the top of the column (in terms of its boiling point – low or high?)
2. What can you say about bigger molecules and its forces?
Properties of fractions1. What can you say about the fractions that are at the top of the column (in terms of its boiling point – low or high?)2. What can you say about bigger molecules and its forces?
Hints Name the force between them
Intermolecular forces Strong attractive forces or
weak attractive forces? Easily separated or not? High boiling point - Low boiling point-
The Fractions In Crude OilPetrol contains the alkane with 8 carbons.i. Can you guess its name?ii. Draw a picture of the molecule.
CrackingCracking is used to make ethene.
Cracking needs a high temperature and a catalyst.
Write about cracking.
Your answers should include What happens to hydrocarbon molecules during cracking. Why cracking is a useful reaction
u………………..substances called f……………. in a fractionating
column. Each fraction is a mixture of h……………………… with
similar b………….. p………………Fraction Uses
Starter ActivityLook at the following formula displayed
on your starter activity sheet. Write down two facts about each
molecule from its formula (3 marks)
Making Crude Oil UsefulLearning Intention
We are learning about how crude oil can be separated into fractions.
How and why fractional distillation works.How the forces between molecules affect their
boiling points.
Understand and apply the concept of intermolecular
forces. Explain why cracking
matches the supply and demand of petrol.
Explain
i. Know how fractional distillation works because of differences temperature.
ii. To label fractional distillation apparatus.
Success Criteria
Know how fractional distillation works because of differences temperature.
To label fractional distillation apparatus.
Explained that cracking converts large alkanes
into smaller ones.
Understand and apply the concept of intermolecular forces.
Used equations where appropriate to explain to the concept of cracking.
Evaluate the use of different fuels
Showed detailed knowledge and understanding of extraction methods and how this relates to the reactivity seriesUsed equations where appropriate to explain to the concept of cracking.
Making Crude Oil UsefulLearning Intention
We are learning about how Crude oil are separated into fractions and why.
How and why fractional distillation works.To interpret and evaluate data to choose the best