There is a much greater demand for shorter hydrocarbon than there is for the longer hydrocarbons. It breaks the revision for biology, chemistry and physics down into weekly areas to revise, cross linked to the relevant revision guide pages and revision workbook pages. When these types of monomers react they join together, usually losing a small molecule such as water, and so the reactions are called condensation reactions. Condensation polymerisation involves a reaction between monomers with two different functional groups. Detailed revision notes on the topic addition polymers. Its written by teachers especially to help year 10 and year 11 students revise. These processes break covalent bonds in the molecules, causing thermal decomposition reactions. Struggling to get your head round revision and exams. Polymers a2levellevelrevision, chemistry, aromatics. A hydrocarbons are broken down 1 mark to produce smaller more useful molecules 1 mark. Cracking is a reaction in which larger saturated hydrocarbon molecules are broken down into smaller, more useful hydrocarbon molecules, some of which are unsaturated.
Two methods of cracking how to write a balanced equation for cracking what an alkene is, and how they differ from an alkane the test for alkenes the. Petrol and other fuels are produced from it using fractional distillation and cracking. Chemistry revision notes on the topic cracking hydrocarbons. In this video, we look at how cracking is used to convert. Cracking oil and cracking gcse chemistry single science. Naturally occurring and synthetic polymers can be formed. Cracking and polymerisation video teaching resources. This summarises the key topics for the organic chemistry unit, including crude oil, the structure of alkanes, fractional distillation, properties of hydrocarbons, cracking, alkenes and polymerization.
These resources are specifically designed for senfoundation students studying gcse chemistry ocraqa. Cracking and alkenes gcse chemistry single science revision. High octane starter to inject pace which is easily adapted for other lessons. Cracking edexcel gcse chemistry single science revision. Eduqas gce a2 chemistry detailed organic synthesis map and analysis. Gcse chemistry polymers all links to revision topics.
Alkanes, alkenes, alcohols and carboxylic acids are different homologous series of organic compounds. Gcse science chemistry 91 triple condensation polymers duration. Cracking is the most important process for the commercial production of gasoline and diesel fuel. If you add up the number of hydrogen atoms in the above reaction, you will see that there are 22 on each side.
Designed by expert teachers for the edexcel gcse 91 chemistry syllabus. Addition polymerisation edexcel gcse chemistry revision. Gcse chemistry science revision resouces for carbon compounds covering what is crude oil. Written by teachers for the edexcel igcse chemistry course. Archived sciences revision programme from 2017 old syllabus the booklet below was issued to students at the start of january. Chemistry revision notes on the topic addition polymerisation. The compounds are mainly a coal b sea creatures c alcohols d hydrocarbons. Learn about and revise fuels with this bbc bitesize gcse chemistry.
This website and its content is subject to our terms and conditions. Polymerisation happens when monomers react to form long chain polymer molecules. The whole of aqa chemistry paper 2 or c2 in only 48 minutes 91 gcse chemistry revision duration. A short videoaudio guide explaining the essentials of cracking and polymerisation. Tes global ltd is registered in england company no 02017289 with its registered office at 26 red lion square london wc1r 4hq. Designed for gcse revision, this high res animation is comprehensive in its coverage. Cracking and polymerization video teaching resources. Cracking, in petroleum refining, the process by which heavy hydrocarbon molecules are broken up into lighter molecules by means of heat and usually pressure and sometimes catalysts. For example, ethene molecules can react together to form polyethene, a polymer. Gcse chemistry senfoundation crude oil, alkanes, frac. Long chain hydrocarbons can be broken into smaller hydrocarbons, by heating with a catalyst. Cracking breakes longer chain molecules to smaller alkane and alkene molecules as there is high demand for. Cracking allows large hydrocarbon molecules to be broken down into smaller, more useful hydrocarbon molecules. Useful products from crude oil crude oil is a fossil fuel, formed from the decay of sea creatures over millions of years.
An alkene is produced because the original alkane does not have enough hydrogen atoms to. Aqa trilogy 9 1 cracking and alkenes teaching resources. Hydrocarbons from oil a2levellevelrevision, chemistry. Its a process studied in gcse chemistry, so you need to understand it. Cracking an alkane produces a smaller alkane plus an alkene. Cracking and alkenes crude oil, hydrocarbons and alkanes. Links to all of the revision topics for polymers 55 products from oil. Gcse chemistry what is the chemistry of the cracking of. Learn about the properties of polymers and how they can be used with bbc bitesize gcse chemistry. Gcse chemistry revision worksheets on organic chemistry and crude oilcan be accessed via this dedicated page. Cracking hydrocarbons edexcel gcse chemistry revision notes. Gcse chemistry revision worksheets on polymers and polymerisation can be accessed via this dedicated page. In the cracking process long chain hydrocarbons are broken.
Index of oil and organic chemistry gcseigcseo level revision. Home gcse study tools chemistry c1 alkenes, cracking and polymers. Gcse science chemistry 91 crude oil and hydrocarbons. Alkenes along with alkanes can be produced from cracking. Carbon compounds this section, carbon compounds covers what is crude oil. This is because alkanes are saturated whereas alkenes are unsaturated which means that they can carry out addition reactions, required for polymerisation. This type of polymerisation is called addition polymerisation. These revision notes on cracking hydrocarbons like alkanes in the. C1 alkenes, cracking and polymers flashcards in gcse. You need to know about alkanes, alkenes, crude oil and the process of cracking. But when some of the fractions of crude oil are cracked, a whole new world of chemistry opens up. Polymers, monomers, crude oil, cracking and hydrocarbons. To familiarise you with it, weve created this interactive quiz.
Cracking oil fractions reaction conditions products equations. They cover formation of crude oil, hydrocarbons, alkanes, fractional distillation, alkenes and polymerisation. Alkenes can take part in reactions that alkanes cannot. The reason for this is that cracking produces a new family of. These monomers the starting materials are often alkenes the process chemical reaction that turns monomers into polymers. This is a thermal decomposition reaction known as cracking.
Gcse polymerisation revise reaction of monomer molecules. Before joining or doing any activity please read the guidelines of the. It is a complex mixture of hydrocarbons, containing mainly alkanes. What is a polymer polymers are very large molecules sometimes called macromolecules. During the study of alkenes in as chemistry, you learnt about addition polymers. Addition polymerisation more organic chemistry aqa.
Two methods of cracking how to write a balanced equation for cracking what an alkene is, and how they differ from an alkane. Cracking and alkenes crude oil, hydrocarbons and alkanes aqa. Tes global ltd is registered in england company no 02017289 with its registered office at 26 red lion square. Each polymer molecule is a long chain of mainly carbon atoms polymers are made from many smaller molecules, called monomers.
Gcse science chemistry 91 triple addition polymers. Gcse chemistry revision covering cracking and its products, hydrocarbons, catalyst, thermal decomposition, alkanes, single covalent bonds, alkenes, double covalent bonds, and cracking. Polymerisation is the name given to the reaction that produces polymers. Crude oil cannot be used directly but it is the source of many useful products.
Give an example of a method by which cracking can be carried out. In industry they use silica silicon oxide or alumina aluminium oxide. Condensation polymers polymers gcse chemistry single. Revise and summarise the key information for unit 7. Fractions containing large hydrocarbon molecules are heated to vaporise them. The process is known as catalytic cracking because it only happens in the presence of a catalyst substance which speeds up the reaction without being used up itself. Each repeat unit is connected to the adjacent units via covalent bonds. Cracking is used to a get more oil b make more useful compounds c make oil thinner d make oil quieter when used as a fuel for cars. Organic chemistry from the combined science aqa gcse chemistry specification. Polymers are large molecules built by linking 50 or more smaller molecules called monomers. Gcse chemistry revision organic chemistry crude oil.
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