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Ready For Sec3 Chemistry?
Test Description: This game will let you understand more about qualitative analysis, preparation of salts, chemical bonding and atomic structure.
Instructions: Answer all questions to get your test result.
1) Insoluble base-acid reaction forms...
A
Salt and water
B
Salt and hydrogen
C
Salt, Ammonia and water
D
Salt, Carbon Dioxide and water
2) Heating to saturation, cooling and filtering is called...
A
crystallisation
B
evaporation to dryness
C
filtration
D
heat forcing
3) Which of the following salts is prepared by titration?
A
iron(III) nitrate
B
zine carbonate
C
potassium chloride
D
magnesium nitrate
4) Which of the following is not a property of alkalis?
A
reacts with ammonium salts to form ammonia gas, water and salt
B
Sour
C
Soapy
D
turn color of universal indicator
5) Which combustion equation is balanced?
A
2C2H6 + 7O2 в†’ 3CO2 + 6H2O
B
2C2H6 + 4O2 в†’ 3CO2 + 10H2O
C
8C2H6 + 8O2 в†’ 8CO2 +8H2O
D
3C2H6 + 10O2 в†’ 10H2O + 2CO2
6) What is the elctronic configuration of Al?
A
1s2 2s2 2p6 3s2 3p2
B
1s2 2s2 2p6 3s2 3p4
C
1s2 2s2 2p6 3s2 3p1
D
1s2 2s2 2p6 3s2 3p3
7) What is the elctronic configuration of N?
A
1s2 2s2 2p3
B
1s2 2s2 2p6
C
1s2 2s2 2p4
D
1s2 2s2 2p5
8) An atom with electronic configuration 1s2 2s2 2p6 3s2 3p5 is
A
group 7 period 3
B
group 2 period 3
C
group 3 period 7
D
group 5 period 3
9) It is impossible to directly react an insoluble compound to prepare an insoluble salt as a/an _______ would be formed around the compound, preventing further reaction.
A
cover
B
coating
C
block
D
cap
10) To remove water from soil and sand, we can use
A
crystallisation
B
chromatography
C
fractional distillation
D
filtration
*select an answer for all questions
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