Topic 7 - Properties Of Substances

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 Topic 7 - Properties Of Substances
SG Chemistry (Scotland) Topic 7 - Properties of substances

  
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  • 1. 
    Non-metals do not conduct electricity. Which non-metal is the only exception?
    • A. 

      Carbon (diamond)

    • B. 

      Carbon (graphite)

    • C. 

      Silicon

    • D. 

      Chlorine


  • 2. 
    In which state(s) do metals conduct electricity?
    • A. 

      Solid

    • B. 

      Liquid (melts)

    • C. 

      Gas


  • 3. 
    Which of the following will conduct electricity in the state shown.
    • A. 

      NaOH(s)

    • B. 

      CuCl2 (s)

    • C. 

      Sugar (aq)

    • D. 

      NaCl (aq)


  • 4. 
    Grease is a covalent compound.  Which of the following liquids is it likely to be soluble in?
    • A. 

      Water

    • B. 

      Hydrochloric acid

    • C. 

      Petrol


  • 5. 
    What state is sodium sulphate likely to be at room temperature?
    • A. 

      Solid

    • B. 

      Liquid

    • C. 

      Gas


  • 6. 
    There are a wide range of covalent compounds.  Which state(s) do they exist?
    • A. 

      Solid

    • B. 

      Liquid

    • C. 

      Gas


  • 7. 

    During an electrolysis, what type of charged particle will flow through the wires?  Electolyte
    • A. 

      Protons

    • B. 

      Electrons

    • C. 

      Ions


  • 8. 

    Which ion electron equation, correctly identifies what is happening at the negative electrode.
    • A. 

      Cu(s) --> Cu2+(aq) + 2e-

    • B. 

      Cu2+(aq) + 2e- --> Cu(s)

    • C. 

      2Cl-(aq) --> Cl2(g) + 2e-

    • D. 

      Cl2(g) + 2e- --> 2Cl-(aq)


  • 9. 

    Which of the following statements is correct.
    • A. 

      A.C. is used, as the products are easily identified,

    • B. 

      D.C is used, to ensure that electricity flows.

    • C. 

      D.C is used, as this allows the products to be identified.


  • 10. 
    Why does electrolysis not work, if the electrolyte used is sugar solution?
    • A. 

      Sugar is covalent / has no ions

    • B. 

      Sugar is not at the correct temperature

    • C. 

      There must not be enough sugar in the solution.


  • 11. 
    Which of the following would be the correct ionic formula for sodium sulphate?A (Na+)4(SO4 2-)2    B  Na2SO4    C  (Na+)2SO4 2-  D  Na4SO42 
    • A. 

      (Na+)4(SO4 2-)2

    • B. 

      Na2SO4

    • C. 

      (Na+)2SO4 2-

    • D. 

      Na4SO42


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