12:Oxidation states Flashcards
1
Q
What does OIL RIG mean
A
Oxidation
Is
Loss of electrons
Reduction
Is
Gain of electrons
2
Q
What is a redox reaction
A
A reaction that involves both reduction and oxidation
3
Q
What is the oxidation state of element in the elemental state
A
0
eg. Ca (0) Mg (0)
4
Q
What is the oxidation state of Hydrogen in nearly all compounds
A
+1
5
Q
What is the oxidation state of Oxygen in nearly all compounds
A
-2
6
Q
What is an oxidising agent
A
The substance that contains the element that is reduced
7
Q
What is a reducing agent
A
The substance that contains the element that is oxidised
8
Q
When an atom is oxidised what happens to the oxidation state
A
The oxidation state increases
9
Q
When an atom is reduced what happens to the oxidation state
A
The oxidation state decreases
