Learn vocabulary, terms, and more with flashcards, games, and other study tools. Compounds that contain only carbon and hydrogen atoms are called carbohydrogens hydrocarbons carbides carbohydrates 2. It also produces small alkenes, which are used make many other useful organic chemicals petrochemicals, especially plastics. You will receive your score and answers at the end. My points to hear pinprick of naming alkenes worksheet 2 answers worksheet. Properties and uses of hydrocarbon contd activity crude oil and fuels handout video using hydrocarbons. Alkanes and alkenes worksheet igcse coordinated sciences. For each write the correct tupac namc for cach, draw a structural diagram inc, condensed or complete 17. We then pass the vapor over a hot catalyst, to speed up the reaction. The cracking of 1 molecule of the hydrocarbon is found to produce 4 molecules of butene, 2 molecules of propene, and 1 molecule of a different compound x. Give an example of a method by which cracking can be carried out.
I print the starter as as handout sheet so they only have to complete the cloze exercise without writing everything. Chapter 22, hydrocarbon compounds continued section 22. Complete the chemical equation for the cracking of hexadecane, c16h34, to form propene and one other. Gcse chemistry products from oil high demand questions questionsheet 2 crude oil is a mixture of many different hydrocarbons. What is the general formula for a noncyclic alkane. High octane starter to inject pace which is easily adapted for other lessons. All that we need to do is heat longchain hydrocarbons, so that they turn into vapor. The best way to remember the information in this chapter is to get a pen and paper and write down your answers before clicking on the answer link which will take you to the correct page you may have to read through some of the page before you find the answer. Draw the line bond structures of following types of hydrocarbons using four carbon atoms. For clarity hydrogens have been omitted from most structures on this test. They are also used as the starting materials for manufacture of many dyes and drugs. Ethene and octene are examples of another series of hydrocarbons, called the alkenes.
Also included are answer sheets covering all questions on the task sheets. In this worksheet, we will practice explaining the catalytic cracking of alkanes and its importance and describing the process on an industrial scale. Did a structured question worksheet z for worksheet answers yet may naming. Cracking and alkenes crude oil, hydrocarbons and alkanes. To work out the best way to distinguish alkanes from alkenes. Organic 1 topic questions paper 3 cambridge international. Nuffield coordinated sciences chemistry worksheets worksheet c2b side 1 cracking hydrocarbons acidified potassium manganatevli bromine water when the tube is full, stopper it and then fill two more tubes with the gas 0 0 water 0 bunsen valve 0 which helps 0 to stop suck back clamp as near to end of tube as possible catalyst heat the. The complete combustion of a hydrocarbon produces and. Thus, you can well understand the importance of hydrocarbons in your daily life. Cracking is a reaction in which larger saturated hydrocarbon molecules are broken down into smaller, more useful hydrocarbon molecules, some of which are unsaturated. Unsaturated hydrocarbons hydrocarbons with double or triple bondson the other hand, are quite reactive. This page also contains the link to the notes and video for the revision of this topic c9. Showing top 8 worksheets in the category hydrocarbon.
Handout a fractionation tower label diagram use table 1 fractions in a fractionation tower answers. Draw a ring around the correct answer to complete the sentence. In fact, they serve as building blocks for many familiar plasticspolyethylene, vinyl. In the space at the left, write the word or phrase in parentheses that correctly completes the statement. Chemistry scholars learn the how and why of a process that involves breaking longchain alkanes down into smaller alkanes and an alkene. Cracking and alkenes crude oil, hydrocarbons and alkanes aqa. Hydrocarbons cracking alkane and alkenes worksheets by science. May 6, 2014 hydrocarbon nomenclature naming hydrocarbons practice worksheet. Alkanesandalkenesworksheet how can we distinguish between alkanes and alkenes. Find hydrocarbons lesson plans and teaching resources. One is an alkane with 8 carbon atoms and the other is an alkene. There are 5 worksheets, 5 homework tasks, and an examinationstyle assessment test, each with answers included in this unit. Gcse chemistry revision questions fossil fuels crude. 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.
Whenever carbon does not appear to have the required number of bonds, it is understood that the missing bonds go to hydrogen atoms. Cracking produces molecules like ethene and propene which are very useful in the organic chemical industry. Cracking larger hydrocarbons produces smaller alkanes that can be converted into petrol. Cracking produces the smaller hydrocarbons which make up petrol gasoline. In a cracking reaction, an alkane with 14 carbon atoms breaks down to produce two smaller hydrocarbon molecules. Cracking a hydrocarbon the demand for petrol is greater than the gasoline fraction obtained by distilling crude oil. In this hydrocarbon worksheet, students answer questions about different types of organic molecules categorized as hydrocarbons. Select the correct answer from the text below each question. This useful resource includes 10 task sheets, each with a different hydrocarbon cracking question. Describe where hydrocarbons are obtained and how they are separated. Once you find your worksheet, click on popout icon or print icon to. During combustion, the carbon 1 mark and hydrogen 1 mark in the fuels are oxidised. Alternatively, we can mix the hydrocarbon vapor with very hot steam.
Cracking is the name for a thermal decomposition processes. Unsaturated fats alkenes react with the bromine water, forming haloalkanes. Structure of hydrocarbons docx 14 kb structures of other organic compounds docx 14 kb the world of chemistry video carbon worksheet docx 15 kb the world of chemistry video the age of polymers worksheet docx 16 kb types of organic reactions warm up doc 31 kb video worksheets on shape of carbon and comprimiser doc 30 kb. If a noncyclic alkane contains 15 carbon atoms, how many hydrogen atoms does it contain. Hydrocarbons react with oxygen to form carbon dioxide and water. Petroleum, natural gas is a mixture of thousands of organic compounds. Longchain hydrocarbon molecules can be broken down into smaller, more useful molecules using a catalyst. Cracking is the name for processes which breaks long hydrocarbon molecules into shorter ones. Students answer each of the 10 sheets by giving the missing product name and displayed formula. Students answer each of the 10 sheets by giving the missing. Write a balanced symbol equation for this cracking reaction.
Answer keys are in this guide as part of the activity outline or following the student worksheets. Which two of these compounds are saturated hydrocarbons. Explain the process and purpose of cracking cracking is a thermal decomposition reaction that breaks down long alkenes into smaller useful alkanes and alkenes. In the form of charcoal or carbon black soot, or even graphite, it would cost less than 1 penny per gram. The complete combustion of a hydrocarbon produces carbon dioxide 1 mark and water 1 mark. Tes global ltd is registered in england company no 02017289 with its registered office at 26 red lion square london wc1r 4hq. Alkenes are another series of hydrocarbon molecules, like. Some of the worksheets displayed are naming hydrocarbons work and key, hydrocarbons, alkanes work and key, naming hydrocarbons, work for organic chemistry, chapter 21 hydrocarbons, work 6 combustion reactions, chapter 8. Combustion reactions we will focus on the combustion of hydrocarbons. Reactions of alkanes examples, answers, activities.
This removes the bromine from the water and it looses colour. Balance the equation for the complete combustion of this hydrocarbon. Describe and explain how crude oil is separated into fractions by fractional distillation. In this unit, you will learn more about hydrocarbons. This page contains the aqa gcse chemistry c9 hydrocarbons questions and kerboodle answers for revision and understanding hydrocarbons. Students use a series of images to describe the journey of a hydrocarbon.
This website and its content is subject to our terms and conditions. Bacon contains fats, which include unsaturated fats. Hydrocarbons examples, answers, activities, experiment. This section describes the bonding in hydrocarbons and. A hydrocarbon molecule has the molecular formula c h 3 0 6 2 and can be converted into a mixture of many smaller hydrocarbon molecules via cracking reactions. Naming and drawing alkynes and cyclic hydrocarbons date. These topics contain content suitable for separate chemistry students only. In this worksheet, students will learn how we use cracking to break long hydrocarbon molecules into shorter ones, why this is useful, and what one of the.
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