When a metal reacts with oxygen gas, the product is ...
metal hydroxide
metal oxide
metal oxide and oxygen
metal hydroxide and hydrogen gas
9. Multiple Choice
1.5 minutes
1 pt
The least reactive in oxygen in the list is
iron
zinc
copper
lead
10. Multiple Choice
1.5 minutes
1 pt
Complete the following equation: 2Cu (s) + O2 (g) -->
2CuO (s)
2CuO (g)
4CuO (s)
2CuO (g)
11. Multiple Choice
1.5 minutes
1 pt
Complete the following equation: 4Fe (s) + 3O2 (g) -->
4Fe2O3 (s)
2FeO (s)
2Fe2O3 (s)
4FeO (s)
12. Multiple Choice
1.5 minutes
1 pt
Complete the following equation: Zn (s) + 2HNO3 (aq) -->
2ZnNO3(aq) + 2H2 (g)
ZnNO3(aq) + H2 (g)
2Zn(NO3)2 (aq) + 2H2 (g)
Zn(NO3)2 (aq) + H2 (g)
13. Multiple Choice
1.5 minutes
1 pt
Which one of the following equations correctly represents the reaction of silver nitrate with copper metal?
CuNO3(aq) + Ag(s) → Cu(s) + AgNO3(aq)
Cu(s) + 2 AgNO3(aq) → Cu(NO3)2(aq) + 2 Ag(s)
Cu(s) + AgNO3(aq) → CuNO3(aq) + Ag(s)
Cu(s) + Ag(NO3)2(aq) → Cu(NO3)2(aq) + Ag(s)
14. Multiple Choice
1.5 minutes
1 pt
Which one of the following metals reacts most vigorously with cold water?
Sodium
Magnesium
Copper
Zinc
15. Multiple Choice
1.5 minutes
1 pt
Which one of the following metals could produce zinc metal, if heated with zinc oxide?
Copper
Aluminium
Iron
Silver
16. Multiple Choice
1.5 minutes
1 pt
When scrap iron is added to blue copper sulphate solution, a pinky-brown deposit is formed and a pale green solution is left above it. The pale green solution is of?
iron oxide
copper chloride
sulphuric acid
iron sulphate
17. Multiple Choice
1.5 minutes
1 pt
Which of these reactions is possible?
Zn (s) + CuO (aq) --> ZnO (aq) + Cu (s)
Cu (s) + FeSO4 (aq) --> CuSO4 (aq) + Fe (s)
Pb (s) + ZnCl2 (aq) --> PbCl2 (a) + Zn (s)
Au (s) + 2HCl (aq) --> AuCl2 (aq) + H2 (g)
18. Multiple Choice
1.5 minutes
1 pt
Which of the following metals does not displace H2 gas from dilute HCl or dilute H2SO4?
Mg
Al
Cu
Zn
19. Multiple Choice
1.5 minutes
1 pt
Which four numbers a, b, c and d are required to balance the equation? a Fe (s) + b H2SO4 (aq) --> c FeSO4(aq) + d H2 (g)
1 1 1 1
2, 3, 2, 2
3, 4, 1, 2
2, 3, 1, 4
20. Multiple Choice
1.5 minutes
1 pt
Given the equation ... 2Na(?) + 2H2O(?) --> 2NaOH(X) + H2(?) Which state symbol should be where (X) is?
(s)
(g)
(l)
(aq)
21. Multiple Choice
1.5 minutes
1 pt
Which metal is more reactive than calcium?
magnesium
potassium
silver
aluminum
22. Multiple Choice
1 minute
1 pt
If the metal is more reactive than the metal in the compound it completes with the less reactive metal. Therefore, it can concluded that ...
The less reactive metal repel the more reactive metal from its compound
The more reactive metal bonded with the less reactive metal from its compound
The less reactive metal pushes out or displaces the more reactive metal from its compound
The more reactive metal pushes out or displaces the less reactive metal from its compound
23. Multiple Choice
1 minute
1 pt
What will be reaction if less reactive metal is added in a solution with more reactive metal compound?
vigorous reaction
fizzing gas produced
burns moderately
no reaction
24. Multiple Choice
30 seconds
1 pt
Will silver react with magnesium chloride solution?