1.1.4 REDOX

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What is an oxidation number represent?
measure of the number of electrons an atom uses in bonding
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What is the oxidation number of an uncombined element?
0
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What is the oxidation number of combined hydrogen?
+1
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What is the oxidation number of combine oxygen?
-2
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What is the oxidation number of simple ions? (Na, Mg)
equal to ionic charge
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What is oxidation?
process of electron loss, oxidation number increases
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What is reduction?
process of electron gain, oxidation number decreases
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What do Roman Numerals represent?
after an element in a compound or as an ion will indicate the atom's oxidation number
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What is a redox reaction?
reaction where both oxidation and reduction take place
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why do metals generally increase in oxidation number?
as they loose electrons (oxidise)
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What is a disproportionation reaction?
when an element is both oxidised and reduced
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what is an oxidising agent?
will oxidise a species by removing electrons from it (gets reduced)
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What is a reducing agent?
will reduce a species by donating its own electrons (gets oxidised)
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Card 2

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What is the oxidation number of an uncombined element?

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0

Card 3

Front

What is the oxidation number of combined hydrogen?

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Card 4

Front

What is the oxidation number of combine oxygen?

Back

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Card 5

Front

What is the oxidation number of simple ions? (Na, Mg)

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