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Worksheetsreactivity2
Total questions: 37
Worksheet time: 28mins
Alkali metal + Water —> _____________ + ____________
metal hydroxide and oxygen gas
metal hydroxide and hydrogen gas
metal oxide and oxygen gas
metal oxide and hydrogen gas
Lithium + Oxygen —> _________________
Lithium hydroxide
Lithium oxide
Hydrogen gas
Oxygen gas
What is the correct decreasing order of metal reactivity with water ?
Mg > Na > Li > K
Mg > Li > Na > K
Na > Li > Mg > K
K > Na > Li > Mg
Which of the following does not react with water?
Copper
Lithium
Sodium
Potassium
A reaction in which more reactive metal displaces less reactive metal is called ________________ reaction.
Endothermic reaction
Exothermic reaction
Displacement reaction
Combination reaction
Metal A is more reactive than Metal B. The following displacement reaction takes place.
Metal A + Metal B in compound ---> Metal B + Metal A in compound.
True or False.
True
False
Copper is less reactive than iron. What do you expect to happen when copper is placed inside a solution of iron(II) sulfate?
No reaction takes place.
A reaction takes place. And a colour change is observed.
Which equation correctly shows the displacement of copper from copper(II) sulfate by zinc?
copper + zinc sulfate --> copper(II) sulfate + zinc
zinc sulfate + copper --> copper(II) sulfate + zinc
copper(II) sulfate + zinc --> zinc sulfate + copper
copper(II) sulfate + zinc --> zinc sulfate + water
Which equation correctly shows magnesium displacing copper from it copper(II) sulfate?
2Mg + O2 --> 2MgO
Mg + CuSO4 --> MgSO4 + Cu
Mg + MgSO4 --> MgSO4 + Mg
In the following reaction, which metal has been displaced?
copper sulfate + magnesium → magnesium sulfate + copper
magnesium
copper
sulfate
Complete the word equation:
lead + calcium sulfate →
lead + calcium sulfate
lead + calcium sulfide
calcium + lead sulfate
calcium + lead sulfide
Lithium chloride + Iron → ?
Lithium chloride + Iron (No change)
Iron chloride + Lithium
Lithium oxide + hydrogen
Which can displace Calcium from calcium sulphate?
Sodium
Copper
Iron nails + copper oxide → ?
Iron nails + copper oxide
Iron oxide + copper oxide
Iron oxide + copper
Magic
Complete the word equation below.
Magnesium + oxygen --> .....
Magnesium
Magnesium oxide
Oxides
Magnesium oxide + water
Complete the word equation below.
Zinc oxide + carbon --> ..........
Zinc + carbon
Zinc oxide + carbon
Zinc + carbon dioxide
No change
Magnesium chloride + Sodium → ?
Sodium chloride + Magnesium
Magnesium chloride + Sodium (No change)
Sodium magnesium + Chlorine
Magnesium sodium chloride
What is the correct equation when potassium reacts with water?
2K (s) + H2O (l) --> KOH (aq) + H2 (g)
K (s) + 2H2O (l) --> KOH (aq) + 2H2 (g)
2K (s) + 2H2O (l) --> 2KOH (aq) + H2 (g)
K (s) + H2O (l) --> KOH (aq) + H2 (g)
Oxidation is the _________ of electrons.
loss
gain
sharing
transfer
Reduction is the ___________ of electrons.
loss
gain
sharing
transfer
In the reaction; 2Ca(s) + O2(g) --> 2CaO(s), calcium is __________
Reduced
Synthesized
Oxidized
None of the above
What is the substance that oxidizes another substance by accepting its electrons.
Reducing agent
Oxidation number
Combustive agent
Oxidizing agent
What is the substance that reduces another substance by losing electrons.
Reducing agent
Half-reaction
Electronegative atom
Oxidizing agent
2 CaO--> 2 Ca + O2
Reduction is the ___________ of electrons.
loss
gain
sharing
transfer
Which of the following represents oxidation?
C → CH4
Fe3+ → Fe2+
Cl2 → 2Cl-
Zn → ZnO
Mg → Mg2+ + 2e–
4Fe + 3O2 --> 2Fe2O3
