QUIZ #1

Question 1 Which of the following is an unsaturated hydrocarbon: Propene Propanol Propane 2-chloro-propane a) Propene

Question 2 2. Write the structural formula for : 2,2 dichloropentane 2– bromopentane 1,2 dibromopentane

Question 3 Complete the following: Addition of hydrogen to ethene results in the formation of . Addition of a (eg: Cl, Br) to ethene results in the formation of a . Addition of a hydrogen (eg: HCl) to ethylene also produces . Addition of (in the presence of an catalyst) to ethylene produces an . Ethane halogen, di-halo-alkane Halide, haloalkane Water, acidic, alcohol

Question 4 Write a balanced chemical equation for the following reactions: Addition of hydrogen to propene Addition of chlorine to butene Addition of hydrogen chloride to propene Addition of water to ethene a) C3H6(g) + H2(g) →C3H8 propane b) C4H8(g) + Cl2(g) →C4H8 Cl2 1,2 dichlorobutane c) C3H6(g) + H Cl(g) →CH3CHClCH3 2-chloropopane d) C2H4(g) + H2O(g) →C2H5OH ethanol

Question 5 Name the following compounds: CH3CH2CH2CH2OH CH2Br-CH2Br CH2=CHCH2CH2CH3 1-propanol 1,2 dibromoethane Ethanol Pentene

Question 6 Polytetraflouroethene (teflon) is a hard tough non-flammable polymer. The structure of teflon is shown below: Show the structural formula of the monomer that would be used to make this polymer -C – C- F F F2C=CF2

Question 7 Would a thermoplastic or thermosetting plastic be more suitable for the following: Electrical power switch Plastic film for wrapping sandwiches Squeezeable juice container Knob on a saucepan lid Thermosetting Thermoplastic Thermosplastic thermosetting

Question 8 Show the structural formula of: polyethylene and the monomer from which it is formed. Poly (vinyl chloride) and the monomer from which it is formed n(CH2 = CH2) →—(CH2–CH2)n— CH2=CHCl, CH2-CHCl-CH2-CHCl

Question 9 Which of the following are all formed by addition polymerisation: polyethylene, PVC, nylon polypropylene, PVC, PET poly(acrylonitrile), polethylene, polystyrene polystyrene, PVC, nylon c)

Question 10 How does the hardness of a polymer change with: Increased branching of polymer chains Increased cross linking between chains Short polymer chain Weak intermolecular forces between chains Increased orderly arrangement of polymer chains Reduced hardness Increased hardness