Answer Guide Unit S3_2A

MCQ  Answer  Area of Chemistry
1.  C  [Naming Compounds]
2.  A  [Word Equations]
3.  A  [Chemical Reactions]
4.  A  [Substances]
5.  A  [Chemical Reactions]
6.  D  [Problem Solving/ Word Equations]
7.  C  [Naming Compounds]
8.  A  [Gas Tests – Hydrogen]

 

9.
a) E, F
b) C
 [Chemical Reactions]
10. Picture4
  [Substances]
11.
a) i)   C – carbon, D – helium and hydrogen, E – chlorine
ii)  A – sodium chloride, B – copper oxide
  [Naming Compounds]
b) i)   F – barium nitrate
ii)  D – helium and hydrogen
  [Naming Compounds]
12.
a) iron sulfide
b) magnesium chloride
c) zinc sulfate/ zinc sulfite
d) lead carbonate
  [Naming Compounds]
 13.
 a)  aluminium & sulfur
b)  magnesium, nitrogen and oxygen
c)  hydrogen, chlorine
d)  lithium, sulfur & oxygen
e) calcium, hydrogen & oxygen
f) silicon & oxygen
 [Naming Compounds]
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