Tutorial
AQA GCSE Combined Science: Organic Chemistry
Introduces the chemistry of carbon compounds derived from crude oil. This deck covers hydrocarbons, the process of fractional distillation to separate crude oil, and the properties of the first four alkanes. It explains the process of cracking to produce more useful hydrocarbons, including alkenes. The properties and reactions of alkenes, including the test for unsaturation using bromine water, are also covered as required by the AQA Combined Science Trilogy specification.
Tutorial
AQA GCSE Combined Science: Organic Chemistry
Introduces the chemistry of carbon compounds derived from crude oil. This deck covers hydrocarbons, the process of fractional distillation to separate crude oil, and the properties of the first four alkanes. It explains the process of cracking to produce more useful hydrocarbons, including alkenes. The properties and reactions of alkenes, including the test for unsaturation using bromine water, are also covered as required by the AQA Combined Science Trilogy specification.
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Deck Contents
41 CardsLesson#1
Welcome to this deck on Organic Chemistry. This branch of chemistry is all about compounds containing carbon atoms. We'll explore the fascinating world of substances derived from crude oil, starting with what they are and how we separate them. You will learn about hydrocarbons, alkanes, alkenes, and two crucial industrial processes: fractional distillation and cracking.
Lesson#2
Let's begin with the fundamental building blocks. Most of the compounds in crude oil are hydrocarbons. The name itself gives a big clue about what they're made of. They are molecules made up of hydrogen and carbon atoms only.
Quiz#3
What is the definition of a hydrocarbon?
A compound of hydrogen and carbon only
Lesson#4
Crude oil is a thick, black, smelly liquid found deep underground. It's not very useful in this state. That's because it's a complex mixture of many different hydrocarbons, each with a different number of carbon atoms in its chain. To make it useful, we need to separate this mixture into groups of hydrocarbons with similar chain lengths. These groups are called fractions.
Quiz#5
What is crude oil a mixture of?
Hydrocarbons
Lesson#6
The process used to separate crude oil is called fractional distillation. It works because the different hydrocarbons in the mixture have different boiling points. Hydrocarbons with long carbon chains have strong intermolecular forces, so they have high boiling points. Hydrocarbons with short carbon chains have weaker intermolecular forces, so they have low boiling points.
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