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