Reactions and Elements

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What is oxidation?
When electrons are lost
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What is reduction?
When electrons are gained
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What does an oxidising agent do?
Accepts electrons and gets reduced
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What does a reducing agent do?
Donates electrons and gets oxidised
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What do redox reactions always involve?
The movement of electrons
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How can we see the transfer of electrons in an equation?
By seperating a redox reaction into two half equations that show the loss and gain of electrons
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In a half equation, do you write it with plus electrons or minus electrons?
Plus
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What is a spectator ion?
An ion which takes no part in the reaction
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What does OILRIG stand for?
Oxidation Is Loss, Reduction Is Gain
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What is the oxidation number for all the Group 1 elements?
+1
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What is the oxidation number for all the Group 2 elements?
+2
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What is the oxidation number for all the Group 7 elements?
-1
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What is the oxidation number of hydrogen?
+1
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What is the oxidation number of sulfur?
-2
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What is the oxidation number of all uncombined elements?
0
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What do we need for a redox reaction to be balanced?
The number of atoms of each element must be the same on each side and the total charge on each side must be the same
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Other cards in this set

Card 2

Front

What is reduction?

Back

When electrons are gained

Card 3

Front

What does an oxidising agent do?

Back

Preview of the front of card 3

Card 4

Front

What does a reducing agent do?

Back

Preview of the front of card 4

Card 5

Front

What do redox reactions always involve?

Back

Preview of the front of card 5
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