11. Which statement is NOT true about Group I elements?
  • A.   They are relatively soft metals which can be cut with a knife
  • B.   They form ions with a 1- charge
  • C.   They react rapidly with water forming hydrogen gas
  • D.   They have relatively low melting points

12. Which row is true for the trends down Group 1?

  Melting Point Density
A increases decreases
B increases increases
C decreases decreases
D decreases increases

Q13-14:
Rubidium is below potassium in Group I. A small piece of rubidium was added to a trough of water containing some universal indicator.

rubidium in a water bath

  
13. Which observations you would expect to make during this reaction?
  • A.   rubidium fizzes slowly and the indicator turns red
  • B.   rubidium fizzes slowly and the indicator turns blue
  • C.   rubidium fizzes very quickly and the indicator turns red
  • D.   rubidium fizzes very quickly and the indicator turns blue
14. The correct chemical equation for the reaction between rubidium and water is..
  • A.   Rb   +   H2O  →  RbOH   +    H2
  • B.   2Rb  +  2H2O → 2RbOH   +  H2
  • C.   Rb   +   H2O  →  Rb2O   +    H2
  • D.   2Rb  +  H2O  →  Rb2O   +    H2

15. Astatine is the element below iodine in Group VII.

Which row shows the most likely properties of astatine at room temperature?

  Colour State Reactivity compared to
other Group VII elements
A green gas More reactive
B black solid more reactive
C black gas less reactive
D black solid Less reactive

16. Samples of different halogens were added in turn to different halide solutions. Which of the following are correct results?

I. Chlorine reacted with sodium bromide solution to produce bromine
II. Iodine reacted with lithium chloride solution to produce chlorine
III. Bromine reacted with potassium iodide solution to produce iodine
 
  • A.   I and II only
  • B.   I and III only
  • C.   II and III only
  • D.   I, II and III
17. The ionic equation for the reaction between bromine and iron(II) ions is:

   Br2   +   2Fe2+ → 2Br-  + 2Fe3+

Select the statement which is true about this reaction.

  • A.   bromine is oxidized because it gains electrons
  • B.   bromine is reduced because it loses electrons
  • C.   iron(II) ions are oxidized because they lose electrons
  • D.   iron(II) ions are reduced because they gain electrons

Q18-20:
When chlorine gas is bubbled through colorless potassium iodide solution a brown solution is formed.

brown solution
18. The word equation for this reaction is..
  • A.   chlorine  +  potassium iodide → iodide  +  potassium chlorine
  • B.   chlorine  +  potassium iodide → iodine  +  potassium chloride
  • C.   chlorine  +  potassium iodide → potassium  + chlorine iodide
  • D.   chlorine  +  potassium iodide → potassium  +  iodine chloride
19. What type of reaction is the reaction in Q18?
  • A.   precipitation
  • B.   substitution
  • C.   displacement
  • D.   neutralization

20. This reaction shows that..

  • A.   chlorine is more reactive than iodine
  • B.   iodine is more reactive than chlorine
  • C.   chlorine is more reactive than potassium iodide
  • D.   potassium iodide is more reactive than chlorine