Organic Chemistry 0.0 / 5 ? ChemistryOrganicASAQA Created by: 10robertslCreated on: 07-06-16 11:51 What does the curly arrow in a mechanism represent? Movement of electrons 1 of 32 What is a chain isomer? Same functional group, different arrangement of carbon atoms 2 of 32 What is a position isomer? Functional group attached to different carbons in the chain 3 of 32 What is a functional group isomer? Atoms arranged into different functional groups 4 of 32 What is a Z isomer? Atoms/groups in the same plane 5 of 32 What is an E isomer? Atoms/groups in different planes 6 of 32 What is a stereoisomer? Same structural formula, atoms arranged in different spaces 7 of 32 Why are alkanes described as saturated? Only have carbon and hydrogen, no double bonds 8 of 32 What is cracking? Breaking long chain alkanes into smaller alkanes and alkenes 9 of 32 What type of catalysts are used in cracking? Zeolites (hydrated aluminosilicate) 10 of 32 Describe one method for removing sulphur dioxide from flue gas? Powdered calcium carbonate and wate rto neutralise 11 of 32 How are chlorine free radicals formed in the upper atmosphere? UV light causes the bonds to break 12 of 32 What is a neucleophile? An electron pair donor 13 of 32 What happens in a neucleophilic substitution reaction? Haloalkane and neucleophile, attacks central carbon, new boned formed 14 of 32 What conditions are needed in the bromoethane and ammonia reaction? Warmed in a sealed tube 15 of 32 What is an electrophile? Electron pair acceptors 16 of 32 What does bromine water test for? Differentiate between alkanes and alkenes 17 of 32 Which carbocation is the most stable? Tertiary 18 of 32 Briefly describe addition polymerisation. The double bonds in alkenes open up and join together. Form long chains called polymers 19 of 32 Why are poly(alkenes) unreactive? They have lost their C=C double bond, carbon chain is non-polar 20 of 32 What are the inermolecular forces between polymer chains and poly(chloroethene)? Cl-C bonds are polar, the Cl and C atoms of different chains have permanent dipole forces 21 of 32 Two uses of rigid poly(chloroethene). Window frames, drain pipes 22 of 32 Two uses of flexible poly(chloroethene). Clothing, electric cable insulation 23 of 32 What is the equation for fermentation? C6H12O6------>2C2H5OH + 2CO2 24 of 32 What two substances can be used to oxidise alcohols? Potassium manganate and potassium dichromate 25 of 32 What does a primary alcohol oxidise to? An aldehyde then a carboxylic acid 26 of 32 What does a secondary alcohol oxidise to? A keytone 27 of 32 What does a tertiary alcohol oxidise to? Nothing, it doesn't oxidise 28 of 32 How could you distinguish between an aldehyde and a keytone? Fehlings solution or Tollens' reagent 29 of 32 What colour forms when Fehilings solution is mixed with an aldehyde? Silver mirror 30 of 32 How do you make Tollens' reagent? 2cm^2 of 0.1mol of silver nitrate, a few drops of sodium hydroxide, dilute ammonia. 31 of 32 Where is the finger print region of an infrared spectrum? From 1500 (wavelength) and below 32 of 32
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