Redox.Final Test Paper 2026\2027.
reduction
gaining an electron, causing the oxidation
number to decrease
oxidation
losing an electron, causing oxidation number to
increase
0
What is the oxidation number of elements?
+1
What is the oxidation number of Group 1
metals in a compound?
+2
What is the oxidation number of Group 1
metals in a compound?
-1
, Redox.Final Test Paper 2026\2027.
What is the oxidation number of halogens
(eg.fluorine) in a compound most of the time?
-2 -1 +2
What is the oxidation number of oxygen? What
is the oxidation number of oxygen in H2O2?
+1 -1
What is the oxidation number of hydrogen in a
compound? What is the oxidation number of
hydrogen when it is with a metal?
0
sum of all charges in neutral compounds must
equal ___________
charge
the sum of all charges in a polyatomic ion equal
_________ of the ion
reduction
gaining an electron, causing the oxidation
number to decrease
oxidation
losing an electron, causing oxidation number to
increase
0
What is the oxidation number of elements?
+1
What is the oxidation number of Group 1
metals in a compound?
+2
What is the oxidation number of Group 1
metals in a compound?
-1
, Redox.Final Test Paper 2026\2027.
What is the oxidation number of halogens
(eg.fluorine) in a compound most of the time?
-2 -1 +2
What is the oxidation number of oxygen? What
is the oxidation number of oxygen in H2O2?
+1 -1
What is the oxidation number of hydrogen in a
compound? What is the oxidation number of
hydrogen when it is with a metal?
0
sum of all charges in neutral compounds must
equal ___________
charge
the sum of all charges in a polyatomic ion equal
_________ of the ion