Redox Flashcards
0
Q
Oxidation number of combined oxygen
A
-2
Expect when bonded to fluorine, when it becomes +2
And in peroxides, when it becomes -1
1
Q
Oxidation number of an uncombined element
A
0
2
Q
Oxidation number of combined hydrogen
A
+1
Expect when bonded in metal hydrides, when it becomes -1
3
Q
Oxidation number of a simple ion
A
Charge on ion
4
Q
Oxidation number of combined fluorine
A
-1
5
Q
What is oxidation?
A
Gain of oxygen
Loss of electrons
Increase in oxidation number
6
Q
What is reduction?
A
Loss of oxygen
Gain of electrons
Decrease in oxidation number
7
Q
Metals generally form ions by…
A
Losing electrons with an increase in oxidation number to form positive ions
8
Q
Non-metals generally react by…
A
Gaining electron with a decrease in oxidation number to form negative ions
9
Q
Metal + acid –>
A
Salt + H2
