Worksheetsredox
Total questions: 12
Worksheet time: 39mins
Name
Class
Date
1.
Oxidation is the _________ of electrons.
a)
loss
b)
gain
c)
sharing
d)
transfer
2.
Reduction is the ___________ of electrons.
a)
loss
b)
gain
c)
sharing
d)
transfer
3.
What is the overall charge of N2?
a)
-3
b)
0
c)
+4
d)
-1
4.
What element is being Oxidized?
a)
N
b)
H
c)
O
d)
S
5.
What element is being Reduced?
a)
N
b)
H
c)
O
d)
S
6.
If an atom loses electrons during a chemical reaction, the atom was:
a)
Oxidized
b)
Reduced
c)
Neutralized
d)
Precipitated
7.
If in a reaction, copper is reduced; its number of electrons has:
a)
Increased
b)
Decreased
c)
Remained Constant
d)
Varies Randomly
8.
Gaining oxygen is an example of...
a)
oxidation
b)
reduction
9.
Which of the following represents oxidation?
a)
C → CH4
b)
Fe3+ → Fe2+
c)
Cl2 → 2Cl-
d)
Zn → ZnO
10.
Which of the following represents reduction?
a)
C → CO
b)
N2 → NH3
c)
Zn → Zn2+
d)
H2 → H2O
11.
Which statement is true:
Mg → Mg2+ + 2e–
Mg → Mg2+ + 2e–
a)
Mg gains 2 electrons
b)
Mg2+ loses 2 electrons
c)
Mg loses 1 electron
d)
Mg loses 2 electrons
12.
Which element is oxidised in the reaction Zn + 2HCl → ZnCl2 + H2
a)
Zinc
b)
Hydrogen
c)
Chlorine
d)
None
100 %
