A-LEVEL CHEMISTRY: 3.1.7: Redox (ChemRevise) Flashcards
(15 cards)
1
Q
oxidation:
A
loss of electrons
2
Q
reduction:
A
gain of electrons
3
Q
all uncombined elements have an O.S. of…
A
0
4
Q
the O.S. of the elements in a compound add up to…
A
0
5
Q
the O.S. of a monoatomic ion = …
A
the ionic charge
6
Q
in a polyatomic ion (eg CO3 2-) the sum of the individual O.S. of the elements adds up to…
A
the charge on the ion
7
Q
O.S. of group 1 metals:
A
+1
8
Q
O.S. of group 2 metals:
A
+2
9
Q
O.S. of Al:
A
+3
10
Q
O.S. of H:
exception:
A
+1
except in hydrides, -1
11
Q
O.S. of F:
A
-1
12
Q
O.S. of Cl, Br, I:
exception:
A
-1
except in compounds with O and F
13
Q
O.S. of O:
exception:
A
-2
except in peroxides, -1, & when in compounds with F
14
Q
oxidising agents are…
A
electron acceptors
15
Q
reducing agents are…
A
electron donors
