Please comment if you have any questions, and subscribe if you. Ch 4 methane c 2 h 6 ethane c 3 h 8 propane c 4 h 10 butane c 5 h 12 pentane c 6 h 14 hexane c 7 h 16 heptane c 8 h 18 octane c 9 h 20 nonane. Fractional distillation is used to separate the compounds in crude oil. Catalytic cracking in which a catalyst is employed and which produces high yields of branched and cyclic alkanes. Cracking is used to convert long alkanes into shorter, more useful hydrocarbons. 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. These are called alkenes the main alkenes are shown in the diagram to the left c1b 4. There are 16 triangles with 18 pairs of questions and answers that make a parallelogram. If youre an ambitious student, you will be searching for the best gcse revision tips online. Interactive notes, tests and more from bbc bitesize. A monomer is a molecule that may bind chemically to other molecules to. Cracking is the name for processes which break long hydrocarbon molecules into shorter ones. Cracking oil fractions reaction conditions products equations. Decane is catalytically cracked to produce octane for petrol and ethene for ethanol.
Some hydrocarbons are unsaturated because they have carboncarbon double bonds. Creating a revision timetable is a great way to organise your study time, plus it also helps boost your motivation to revise for your exams. The general certificate of education suite of exams are perhaps the most important set of tests a student will take. The gcse science section of revision science covers. Cracking is normally carried out at high temperatures using a catalyst. As part of their work on crude oil, gcse chemistry students will look at thermal cracking. Science a ch1fp unit chemistry c1 f revision science. As well as general subject resources, weve also put together resources for exams from the three big beasts of the examining world. This is achieved by using high pressures and temperatures without a catalyst, or lower temperatures and pressures in the presence of a catalyst. This page also contains the link to the notes and video for the revision of this topic.
Oct 26, 2016 steam cracking which produces high yields of alkenes. A catalyst is a substance that will change the rate of a reaction. Improving processes and products extracting metals. It is caused by the breaking of carboncarbon bonds. Oct 03, 2015 designed for gcse revision, this high res animation is comprehensive in its coverage, and can also be used on a large screen as your main teaching resource for the topic. Find gcse revision resources covering edexcel, aqa and ocr for a range of subjects including. Emulsions are thicker than oil or water and have many uses that depend on their special properties. A typical catalyst used for this purpose is a mixture of silica sio 2, 4 parts. What is a catalyst a catalyst is a substance that will change the rate of a reaction. This is a chemical reaction in which heat breaks down long chain. Chemical analysis the earths atmosphere complete the.
Fractional distillation separates a mixture into a number of different parts, called fractions. Gcse science chemistry 91 crude oil and hydrocarbons. Catalytic cracking and balance equation gcse science balancing equations. They provide better texture, coating ability and appearance, for example in salad dressings. Designed for gcse revision, this high res animation is comprehensive in its coverage, and can also be used on a large screen as your main teaching resource for the topic. Students can then quickly cut out the individual triangles. Cracking hydrocarbons high school chemistry tarsia use.
This page also contains the link to the notes and video for the revision of this topic c9. Cracking hydrocarbons edexcel gcse chemistry revision notes. With an edplace account youll be able to track and measure progress, helping each. Alevel chemistry help lastminute alevel chemistry revision. Organic chemistry index page all my advanced a level organic chemistry revision notes. Write a balanced equation for this cracking of heptane gcse chemistry, igcse chemistry, o. Catalytic cracking produces gasoline of higher octane number and therefore this method is used for obtaining better quality gasoline. Created by shahzad raza reactivity series the following list shows how reactive different elements are in relation to each other. Cracking gcse chemistry single science revision wjec bbc. Fractional distillation of crude oil oil and cracking. Many are very useful, such as cooking and combustion.
Cracking and polymerisation video teaching resources. Gcse chemistry what is the chemistry of the cracking of. Revision notes on alkanes in chemistry, physical properties of alkanes, uses of alkanes, chemical reactions of alkanes, help when revising for aqa gcse chemistry, edexcel gcse chemistry, ocr gcse gateway science chemistry, ocr 21st century science chemistry gcse 91 chemistry examinations. They are referred to as saturated hydrocarbons because they do not contain a double bond and other atoms cannot add to them. Revising for gcse is just so important but revision boredom can easily setin. Browns gcseigcseo level ks4 sciencechemistry revision notes. Chemistry catalytic cracking help the student room. Gcse chemistry science revision resouces for carbon compounds covering what is crude oil. The fraction produced from crude oil is heated to form a gas. We can break down hydrocarbons in a process called cracking. For an indepth look at gcse have a read of our gcse explained article many exams will follow if students decide to pursue alevels and a university degree, but these are the first large set of exams students face, knowing their future depends on it.
Tuitionkit is your online resource for studying core gcse and alevel subjects, covering gcse english, maths and science and alevel biology, chemistry, phys. New91 aqa gcse chemistry c9 crude oil and fules kerboodle. Learn about crude oil, hydrocarbons and alkanes with bitesize gcse chemistry aqa. The more reactive metals such as zinc, iron, copper, aluminum etc are found as metal ores. For example, a higher hydrocarbon c 1 0 h 2 2 splits according to the reaction. Cracking of hydrocarbons involves thermal decomposition. The catalyst does not take part in the reaction as a reactant. Gcse chemistry products from oil high demand questions questionsheet 2 crude oil is a mixture of many different hydrocarbons. Aqa gcse science chemistry c1 summary notes page 27 of 32 c1. An ore is a rock containing a high enough quantity of a metal compound to be commercial useful. Balanced equation for cracking of heptane deviltopp. Tuitionkit provides over videos covering gcse and a level english, science and maths. Cracking is defined as a process, wherein complex organic molecules namely long chain hydrocarbons or kerogens are broken down into smaller molecules namely light hydrocarbons. Maths, english, biology, chemistry, physics, history, geography, religious studies and more.
Click on the links below to find the revision and exam resources you need. Describe the conditions for cracking decane vapours of decane high temperature. There is a greater demand for smaller hydrocarbons than larger ones. Cracking is a reaction in which larger saturated hydrocarbon molecules are broken down into smaller, more useful hydrocarbon molecules, some of which are unsaturated. Gcse crude oil revise the thermal cracking reaction. A catalyst is often used to make a reaction go faster. Chemistry revision notes on the topic cracking hydrocarbons. We can see many reactions such as fireworks and explosions. Would say that it can be controlled the temperatures which are used during catalytic cracking and the quantity of decane gases which is added. The physical properties and chemical reactions of alkanes with oxygen combustion, burning and chlorine to form a chloroalkane are fully described with word and symbol equations.
Building a revision timetable can add structure to your revision and help you identify which gcse subjects you need to prioritise to get better marks. This breaks long alkane molecules which arent very useful into smaller molecules. Start studying oldsetaqa gcse chemistry topic 610 paper 2. Metals are very valuable materials but only a small number of them can be found as pure metals in the earth. Gcse chemistry revision scool, the revision website. Targeted towards aqa c1 topic 5 but suitable for edexcel and other exam boards too.
Crude oil is a dark smelly liquid which is a mixture of many different. Forces in action define the spring constant and write an equation for. C2h5oh has a hydroxyl group oh, that is why it is written in that way to underline this group. A resource from the number 1 revision site gcse chemistry quiz chemical reactions. Cracking is the name given to breaking up large hydrocarbon molecules into smaller and more useful bits. Science a ch1fp unit chemistry c1 f revision science gcse. The alkanes are a series of hydrocarbon molecules made of carbon and hydrogen atoms.
I suggest that the a4 tarsia is printed on card and then the outline is cut out. Goconqrs calendar tool is the ideal way to create a. The rate of catalyst greatly depends upon the factors such as the presence of catalyst and temperature. Mar 27, 20 aqa gcse science chemistry c1 summary notes page 31 of 32 c1. It is still there in the same form when the reaction is complete. This is a shortened list but contains most of the elements that you need to know about. Learn vocabulary, terms, and more with flashcards, games, and other study tools. All that we need to do is heat longchain hydrocarbons, so that they turn into vapor. Gcse chemistry revision guides and question banks covering periodoc table, acids and alkalis, rates of reaction and all core gcse chemistry topics.
Cracking hydrocarbons high school chemistry tarsia use as. Gcse chemistry quiz chemical reactions education quizzes. Gcse science revision page 6 chemistry here is an example of cracking. The first ten members of the homologous series of the alkanes are.
Cracking meaning types of cracking organic chemistry. A fraction of crude oil is a mixture of chemicals in the crude oil that have similar boiling points. Sep 04, 2016 1 iii suggest one reason why oil companies reform alkanes such as hexane. Gcse chemistry revision covering cracking and its products, hydrocarbons, catalyst, thermal decomposition, alkanes, single covalent bonds, alkenes, double covalent bonds, and cracking paraffin. Nov 14, 2017 gcse science chemistry 91 crude oil and hydrocarbons. Cracking happens when we heat long alkane molecules into a vapor, and pass the vapor over a catalyst, or mix it with steam. This page contains the aqa gcse chemistry polymers questions and kerboodle answers for revision and understanding polymers. Cracking and alkenes gcse chemistry single science revision. Conditions catalyst thermal decompositiongcsescience. Petrol and other fuels are produced from it using fractional distillation. This is a fun gcse chemistry tarsia for revision of cracking hydrocarbons. A chemical reaction is a process where the molecular structure changes. A catalyst is often used to make a reaction go faster the catalyst does not take part in the reaction as a reactant.
Dec 31, 2015 summary video on cracking for gcse chemistry. Oldsetaqa gcse chemistry topic 610 paper 2 flashcards. Designed by expert teachers for the edexcel gcse 91 chemistry syllabus. Oldsetaqa gcse chemistry topic 610 paper 2 quizlet. The nobel school, stevenage, mobbsbury way, sg2 0hs phone. New91 aqa gcse chemistry c11 polymers kerboodle answers.
The process of breaking higher hydrocarbons with high boiling points into a variety of lower hydrocarbons that are more volatile low boiling, is called cracking or pyrolysis. Ch 4 methane c 2 h 6 ethane c 3 h 8 propane c 4 h 10 butane c 5 h 12 pentane c 6 h 14 hexane c 7 h 16 heptane c 8 h 18 octane c 9 h 20 nonane c 10 h 22 decane. At goconqr, we help you get the most out of goconqrs study tools and offer some general study tips and advice to help you revise better and improve your memory. Cracking decane can sometimes produce just two types of molecule.
Alkanes saturated hydrocarbons molecule structure uses. Decane is cracked to produce octane for petrol and ethene for ethanol. Cracking and alkenes crude oil, hydrocarbons and alkanes. Revision videos by a students from snaprevise edexcel specific revision videos available best revision websites. It is not changed by the reaction or used up during the reaction. Cccc1a 11a 11a 1 limestone st martins catholic academy.
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