Here you can find support from experts and your peers on any issues you are facing related to exam and studying for gcse and alevels maths and science. New91 aqa gcse chemistry c9 crude oil and fules kerboodle answers facebook 0 tweet 0 pin 0 like 0 share 0 email 0 this page contains the aqa gcse chemistry c9 hydrocarbons. One of the topics covered in gcse science is the chemistry of crude oil and other fuels. Useful products from crude oil crude oil is a fossil fuel, formed from the decay of sea creatures over millions of years. As the vapour rises up the column, the temperature falls. Organic chemistry crude oil and hydrocarbons properties of hydrocarbons combustion of hydrocarbons fractional distillation of crude oil cracking. Hydrocarbons from oil a2levellevelrevision, chemistry. Crude oil is not very useful as it is, we need to separate the different hydrocarbon chains in order for them to be useful. Obtaining useful substances from crude oil cracking cracking type of thermal decomposition hydrocarbons can be cracked decomposed to produce smaller, more useful molecules. It is a complex mixture of hydrocarbons, containing mainly alkanes.
The many hydrocarbons in crude oil may be separated into fractions, each of which contains molecules of a similar size, by evaporating the oil and allowing it to condense at a number of. Cracking is needed because when fractional distillation of crude oil occurs, you get a very high percentage of long chain hydrocarbons. Cracking oil fractions reaction conditions products equations. Oil and products from oil this list of resources covers oil as a resource and the purification of oil by fractional distillation and cracking. Cracking allows large hydrocarbon molecules to be broken down into smaller, more useful hydrocarbon molecules. As part of their work on crude oil, gcse chemistry students will look at thermal cracking. Learn about the process of oil distillation in order to create fuels and plastics with bbc bitesize gcse. Organic chemistry now forms a substantial part of the gcse specifications. Gcse chemistry revision organic chemistry crude oil. The fractional distillation of oil and the uses of the fractions.
Year 10 and year 11 students of gcse science need to understand how this is done. Have a go at this interactive aqa syllabus a quiz and revise what youve. Short, engaging multimedia learning materials on the topic of hydrocarbons from crude oil, putting science in a reallife context. Either way, it means the vast majority of crude oil can be turned into useful products. My gcse science premium video tutorials, examstyle. Cracking practical gcse chemistry crude oil youtube. The starter is a data analysis activity that links in to the leaning objective. In this video, we look at how cracking is used to convert longchain hydrocarbons into shorterchain. Edexcel igcse chemistry crude oil expert guidance by. Gcse chemistry revision questions fossil fuels crude. During cracking what other type of hydrocarbon is produced and how is it.
A it is a mixture of 1 mark different length hydrocarbons 1 mark. However, it is used as an important source for fuels and as a feedstock for making chemicals including polymers very large chain molecules made by. Learn about crude oil, hydrocarbons and alkanes with bitesize gcse chemistry aqa. In this video, we look at how cracking is used to convert longchain hydrocarbons into shorterchain hydrocarbons.
The complete series covers the aqa gcse 91 chemistry 8462 and combined science. Making crude oil useful learning intention we are learning about how crude oil is. Crude oil and hydrocarbons crude oil bbc bitesize test. I was predicted 5s and came out as the most improved student in my school year. I have a chemistry test tomorrow about hydrocarbons and i didnt get it. Part of the hydrocarbon crude oil topic at science chemistry gcse. Explain in detail why cracking of crude oil fractions makes them more useful. Fractions with different boiling points condense at different levels of the column and can be collected. If alkanes combust in too little air, carbon monoxide may form. Cracking is used to convert long alkanes into shorter, more useful hydrocarbons. Cracking and alkenes crude oil, hydrocarbons and alkanes aqa.
This lesson focuses the supply and demand of different fractions of crude oil and how cracking. This is officially known as the question assessing quality of written. Petrol and other fuels are produced from it using fractional distillation. There are two types of cracking process that achieve thermal decomposition. Learn about crude oil, hydrocarbons and alkanes with bitesize gcse chemistry aqa crude oil is a finite resource not all tests are made equal wevenbsp. Login or subscribe to to see the answers and commentary. In addition to this you will need to know about functional groups such as alcohols, carboxylic acids and esters and how to draw their structures. The vapour is then passed over a powdered catalyst at a temp of about 400700c. Gcse chemistry products from oil high demand questions questionsheet 1 a crude oil is the raw material of the petrochemical industry. Gcse crude oil revise processing by cracking and fracking. Gcse science crude oil, hydrocarbons and cracking lesson. Crude oil can be separated into different fractions using fractional distillation. It is the remains of plantsanimalsfossils produced over millions of years 1 mark. This lesson focuses the supply and demand of different fractions of crude oil and how cracking can be used to break larger hydrocarbons into smaller ones.
Hydrocarbons and crude oil gcse chemistry combined. Before crude oil can be used as fuel or converted into polymers, it has to be processed. A quick revision video covering the gcse chemistry topic of cracking hydrocarbons. Crude oil and other fuels is one area studied in gcse science. Two methods of cracking how to write a balanced equation for cracking what an alkene is, and how they differ. Cracking oil and cracking gcse chemistry single science.
The second stage involves cracking of naphtha to obtain ethene and the third stage involves the polymerisation of ethane. Crude oil is vapourised and fed into the bottom of the fractionating column. There is plenty of waterraw material for hydrogen production while there are limited supplies of crude oil. Carbon compounds this section, carbon compounds covers what is crude oil. Qwc 6 mark answer practice secondary science 4 all. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Crude oil is described as a fossil fuel but it is much more important than that as many plastics have crude oil as a raw material. The reactions are very exothermic give out heat energy, so alkanes in crude oil and natural gas are widely used as heating fuels. This is the fifth of six quizzes on that topic and it looks.
Products from crude oil scool, the revision website. Gcse science chemistry 91 crude oil and hydrocarbons. Bp educational service hydrocarbons from crude oil. Whether you are studying combined science, aqa gcse chemistry. Give a description of how crude oil is formed and where it is found.
This is a chemical reaction in which heat breaks down long chain molecules into smaller ones. Students need to appreciate that crude oil is a very complex mixture of thousands of different substances, mainly hydrocarbons, and is of little use as crude oil. The best way to remember the information in this chapter is to get a pen and paper and write down your. Gcse science chemistry 91 crude oil and hydrocarbons duration. Doc browns gcse igcseo level ks4 science chemistry revision notes on oil, useful products, environmental problems, introduction to organic chemistry. Cracking and alkenes crude oil, hydrocarbons and alkanes. You need to know about alkanes, alkenes, crude oil and the process of cracking. Crude oil often contains too many large hydrocarbon molecules and not enough small hydrocarbon molecules to meet demand. Making crude oil usefulfractional distillation and cracking. I got an 8 in both physics and biology and a 7 in chemistry. Fractional distillation of crude oil oil and cracking gcse. The longchain hydrocarbon is heated to vapourise it.
Making crude oil useful fractional distillation and cracking part 1 1. The unit then moves onto the alkenes as a different homologous series from the alkanes, together with a consideration of the cracking process. In every aqa gcse chemistry exam, candidates are expected to provide at least one longstyle written answer. The demand for short hydrocarbon molecules is greater than their supply in crude oil, so a reaction called cracking is used.
399 121 642 1175 1523 766 1393 51 261 78 1463 269 802 721 278 157 1290 1550 1142 828 1049 622 605 216 271 546 1207 527 1325 712 1106 696 710 1010 945 889 371 405 419 960 796 623 1277 269 677