Redox Flashcards
oxidation is ______ of electrons
loss
reduction is _____ of electrons
gain
what is a reducing agent
elements that lose electrons and are oxidised themselves
what js an oxidising agent
elements that gain electrons and are reduced themselves
uncombined elements always have the oxidation state….
0
ions always have the same oxidation state as
their charge
group 1 elements always have an oxidation state of
+1
group 2 elements always have an oxidation state of
+2
aluminium always has an oxidation state of
+3
hydrogen always has an oxidation state of
+1 except in hydrides when its -1
chlorine always has an oxidation state of
-1 unless in a compound with F or O
Fluorine always has an oxidation state of
-1
oxygen always has an oxidation state of
-2 except it is -1 in peroxides
in compounds what do the Roman numerals represent id present
the oxidation state
what is reduction
a decrease in oxidation number, loss of oxygen, gain of electrons
