3.3 Organic chemistry

Practice questions on Organic chemistry

• Crude oil is described as a finite resource. Explain what is meant by the term 'finite res… (5 marks, Explain)
• Alkenes and alkanes are both hydrocarbons produced during cracking. Describe how bromine w… (5 marks, Describe)
• Alkanes are described as saturated hydrocarbons. Explain what this means and describe how … (5 marks, Explain)
• Alkanes are used as fuels. Explain why cracking is carried out on long-chain alkanes and d… (5 marks, Explain and Describe)
• Ethene is a member of the alkenes homologous series. Describe the structure of ethene and … (5 marks, Describe and Explain)
• Cracking is used to convert large hydrocarbon molecules into smaller, more useful ones. On… (5 marks, Explain)
• Propene is an alkene produced by cracking. Describe how propene could be identified using … (5 marks, Describe and Explain)
• Butene is an alkene with the molecular formula C₄H₈. Explain why butene belongs to the alk… (5 marks, Explain and Describe)
• Alcohols form a homologous series. Describe four features of alcohols as a homologous seri… (5 marks, Describe)
• Ethanol can be used as a fuel and as a solvent. Describe how ethanol is produced by the hy… (5 marks, Describe)
• A chemist has three unlabelled bottles. Each bottle contains one of the following liquids:… (5 marks, Describe)
• A student is given four unlabelled liquids. The liquids are ethanol, ethanoic acid, propen… (5 marks, Describe)
• A student has three unlabelled bottles. Each bottle contains one of the following substanc… (5 marks, Explain)
• Explain why cracking is an important industrial process. In your answer, refer to both the… (5 marks, Explain)
• Explain why cracking is carried out in industry. In your answer, refer to the feedstock us… (5 marks, Explain)
• Crude oil contains many hydrocarbons with different chain lengths. Describe how the proper… (5 marks, Describe and Explain)
• Describe the process of fractional distillation of crude oil and explain how the propertie… (5 marks, Describe and Explain)
• Ethanol can be produced by the fermentation of sugar solutions using yeast. Describe the c… (5 marks, Describe and Explain)
• Ethene can be produced by cracking long-chain hydrocarbons from crude oil. Describe the tw… (5 marks, Describe)
• Crude oil is separated by fractional distillation. Explain how the fractionating column se… (5 marks, Explain)