Doc browns gcseigcseo level ks4 sciencechemistry revision notes. Remember, understanding is the first step on the road of success. Cracking of hydrocarbons is covered before pupils are asked questions on the reasons for the process and how it is carried out. Gcse chemistry revision science section covering cracking and its products, hydrocarbons, catalyst, thermal decomposition, alkanes, single and double covalent bonds, and cracking paraffin. Gcse revision scool, the revision website jump to navigation. It will be very hard to answer all the questions in the paper without knowing these key terms and definitions. Cracking is the act of illegally removing the copyprotection and registration systems used in computer software etc. In this video, we look at how cracking is used to convert longchain hydrocarbons into shorterchain hydrocarbons steam cracking gcse chemistry. We have included some articles from student jungle with advice and inspiration to help you with your future plans.
Give three advantages of using manufactured boards rather than hard or softwoods. Erosion and weathering are the processes of wearing down materials like rocks. Oil, useful products, environmental problems, introduction to organic chemistry. Cracking a problem of supply and demand, other products. Cracking is used to convert long alkanes into shorter, more useful hydrocarbons. Maths, english, biology, chemistry, physics, history, geography, religious studies and more. If you are looking for gcse chemistry revision then visit maths made easy.
There is a greater demand for smaller hydrocarbons than larger ones. Cracking oil fractions reaction conditions products equations. Fractional distillation of crude oil oil and cracking. The bad news is that organic chemistry is kind of a big topic. We crack alkanes because the shorter chain alkanes are more valuable they are used as fuel. Cracking hydrocarbons edexcel gcse chemistry revision notes. Computer science gcse guru is a popular and free revision website for anyone studying or teaching computer science gcse. A substance which works well as a catalyst for one reaction might not work well as a catalyst for a different reaction. Privacy and cookies policy and we want you to know what this means for you. Revising for gcse is just so important but revision boredom can easily setin. Cracking edexcel gcse chemistry single science revision. The american chemist, william burton, is usually credited with being the inventor of the thermal cracking process.
Gcse crude oil revise processing by cracking and fracking. A fully resourced lesson with assessment on the cracking of crude oil. Cracking meaning types of cracking organic chemistry. Gcse chemistry definitions when learning definitions i find it easier to move around and say them to yourself. Cracking of hydrocarbons is illustrated in the below diagram. We crack alkanes because the shorter chain alkanes are more valuable they are used. Cracking produces alkanes and alkenes hydrocarbons with double carbon.
Gcse chemistry revision covering cracking and its products, hydrocarbons, catalyst, thermal decomposition, alkanes, single covalent bonds, alkenes, double covalent bonds, and cracking paraffin. So, learn all of these words and phrases of by heart. You need to understand certain chemical reactions used in a variety. Learn about and revise fuels with this bbc bitesize gcse chemistry edexcel study guide. Gcse chemistry revision guides and question banks covering periodoc table, acids and alkalis, rates of reaction and all core gcse chemistry topics. A catalyst can be a transition metal, a transition metal oxide see the uses of transition metals or an enzyme. Start studying dt resistant materials key terms edexcel gcse. Cracking edexcel igcse chemistry notes save my exams. Give two disadvantages of using manufactured boards rather than hard or softwoods 2 marks 3.
Teenagers sleep quality and mental health at risk over latenight mobile phone use the guardian 30517 researchers advise physical boundaries over devices in bedrooms after study finds poor sleep associated with phone use linked to depressed. Our teacher written quizzes provide an alternative to textbook swatting in the key subjects of english, english literature, maths, science, biology, chemistry, physics, geograpy, history and re religious education. For example, hexane can be cracked to form butane and. Cracking oil and cracking gcse chemistry single science. One family of hydrocarbons produced from crude oil is called the alkanes. Petrol and other fuels are produced from it using fractional distillation and cracking. 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.
Cracking gcse chemistry single science revision wjec bbc. Hydrocarbons and crude oil gcse chemistry combined. Gcse crude oil revise the thermal cracking reaction. This aqa syllabus a quiz will help you revise what they involve. Use it to further your understanding and compliment the other revision sources listed above. The majority of our fuels and plastics are derived from oil.
Crude oil can be separated into different fractions using fractional distillation. Cracking oil fraction hydrocarbons to produce more useful products. In chemistry, it is a process of breaking down large alkane into simpler alkenes and alkanes. In this series, students break down complicated revision subjects to its core components helping you rock your exams. Remember, dont rely on remembering them in the order they appear below as this will not be like an exam. Gcse chemistry revision scool, the revision website. Gcse chemistry revision worksheets chemistry past papers. So lets get cracking get it with alkenes and crude oil. Created by experienced teachers, this website contains computer science theory, quizzes, news, resources and a glossary of key terms all useful for students studying the aqa, ocr, edexcel, cie or eduqas gcse or igcse in.
Combustion products may cause environmental and health problems. This means they contain at least one carboncarbon double bond which displaces two hydrogen atoms and thus, alkenes do not have the maximum number of hydrogen atoms per carbon atom. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Cracking and alkenes crude oil, hydrocarbons and alkanes. The cracking of hexane c6h14 to produce butane c4h10 and ethene. Cracking allows large hydrocarbon molecules to be broken down into smaller. Some are common sense but make sure to test yourself afterward as at least 10 marks in every test will go to definitions. Gcse s are easy motivation thread how to balance revision to get a grade 9 in 7 gcses gcse mock revision study helpers megathread. Gcse science revision fractional distillation youtube.
As particles move they collide with each other and bounce off in all directions. After the fractional distillation of crude oil there are too many large hydrocarbons and not enough small hydrocarbons to meet the publics demand. Petrol and other fuels are produced from it using fractional distillation. Learn about the process of oil distillation in order to create fuels and plastics with bbc bitesize gcse chemistry. Computer science gcse guru revision, quizzes and resources. In addition polymerisation the monomers have at least one double bond between carbon atoms.
From chemistry worksheets to chemistry past papers you will find everything here. This is achieved by using high pressures and temperatures without a catalyst, or lower temperatures and pressures in the presence of a catalyst. Gcse maths textbooks edexcel does anyone have a revision timetable template that i could use. Apr 21, 2012 for the love of physics walter lewin may 16, 2011 duration. In this video, we look at how cracking is used to convert. Everything you need to know about caves, arches, stacks and stumps on coasts. Gcse chemistry revision science section covering fractional distillation, hyrdocarbons, crude oil, fraction and molecules. Gcse design technology revision manufactured boards 1. We also look at alkenes and how we test for alkenes using bromine water. Cracking is the name given to breaking up large hydrocarbon molecules into smaller and more useful bits. Chemistry key terms and definitions revision universe. Gcse design technology revision manufactured boards. Combined science trilogy revision booklet 3 gcse command words command word definition example question example answer state, give, name, write down short answer only and does not require an explanation.
Some of the large hydrocarbons the heavier fractions are broken down into more useful smaller hydrocarbons lighter fractions by a process known as cracking. Gcses are easy motivation thread how to balance revision to get a grade 9 in 7 gcses gcse mock revision study helpers megathread. These revision notes on cracking hydrocarbons like alkanes in the petrochemical. An exception is aluminium oxide, used for the cracking of hydrocarbons. Gcse chemistry what is the cracking of hydrocarbons. Chemistry revision notes on the topic cracking hydrocarbons. Cracking and alkenes gcse chemistry single science revision. Give three reasons why mdf is used to make flat pack furniture. They are full of thousands of questions and detailed explanations that have been written by teachers to guide you to the most relevant facts that you need to know for your exams. Gcse combined science revision gcse computer science revision. Cracking is an example of a thermal decomposition chemical reaction.
Revision buddies gcse revision apps and website offer a modern approach to learning that is interactive and engaging. For example, hexane can be cracked to form butane and ethene. You need to understand certain chemical reactions used in a variety of industrial processes for gcse chemistry. Hacking is the illegal access to a computer system without the owners consent or knowledge in an age of networks that never sleep, hacking can. Free gcse revision guides and question banks covering biology, chemistry, physics, maths and much more. Physics combined science trilogy revision booklet 3 gcse command words command word definition example question example answer state, give, name, write down short answer only and does not require an explanation. Gcse science chemistry 91 carbon footprint youtube. This happens continually along coastlines, creating varying landforms and coastal features. So were going to split it up into the main topics you need to learn for gcse, namely alkanes, alkenes and and the cracking of crude oil.
Igcse complete chemistry notes refined and cleared by kmq. Come inside and find gcse science revision for all of the different aqa specifications for the gcse 2018. Designed by expert teachers for the edexcel gcse 91 chemistry syllabus. In petroleum refining, this process is used in the production of petrol, diesel, and gasoline. Addition polymerisation involves addition reactions in which a large number of small molecules monomers join together to form very large molecules polymers.
High octane starter to inject pace which is easily adapted for other lessons. For the love of physics walter lewin may 16, 2011 duration. Cracking is the process of converting alkanes into alkenes and shorter alkanes. Whereas alkenes produce a smoky yellow flame as they dont fully combust. Find gcse revision resources covering edexcel, aqa and ocr for a range of subjects including. Gcse revision guide to bu ocr specificatio daniel holloway 101 siness studies n b. Bbc bitesize has been updated for this course, and is much improved. Written by teachers for the cie igcse chemistry course. Either way, it means the vast majority of crude oil can be turned into useful products. Dec 19, 2017 6 videos play all 91 gcse chemistry paper 2 the atmosphere freesciencelessons gcse science physics 91 renewable sources of energy duration. One of these is thermal cracking which is used on crude oil. The starter is a data analysis activity that links in to the leaning objective. See more ideas about science revision, science and gcse chemistry. Hacking is the illegal access to a computer system without the owners consent or knowledge in an age of networks that never sleep, hacking can be done remotely from anywhere.
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