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WorksheetsChemistry-13 Redox reactions
Total questions: 10
Worksheet time: 5mins
____ is the loss of electrons.
Oxidation
Reduction
Redox
All chemical reactions
Cl2 + 2e- --> 2Cl - is an example of:
redox
oxidation
reduction
____ keeps track of the movement of electrons.
Oxidation state
Coefficient
Subscript
A substance that oxidizes another substance by accepting its electrons is called an ____.
reducing agent
oxidation number
oxidizing agent
What is the reducing agent here: N2 + 3H2 --> 2NH3
N2
H2
NH3
2NH3
In the reaction Zn + H2O --> ZnO2 + H2
which element, if any, is oxidized?
Zn0
O-2
H20
An increase in oxidation number is caused by ____.
evaporation
gaining electrons
losing electrons
Oxidation-reduction reactions occur because of the competition between particles for...
protons
neutrons
electrons
positrons
As an element is oxidized, its oxidation number...
increases as electrons are gained
decreases as electrons are gained
decreases as electrons are lost
increases as electrons are lost
