Unit 2 part 7 - oxidation states Flashcards
6APR25
1
Q
What is the oxidation state?
A
The number assigned to show the amount of electrons transferred in forming a bond
2
Q
What happens in an oxidation reaction?
A
The electrons transfer
3
Q
How can oxidation happen?
A
- Addition of oxygen
- Removal of hydrogen
- Loss of electrons
- Increase of oxidation state
4
Q
What does an increase in oxidation state mean?
A
means the atom has lost some electron control
5
Q
What does a decrease in oxidation state mean?
A
Means the atom has gained electron control
6
Q
Oxidation states are a measure of what?
A
How electrons are distributed
7
Q
In covalent substances the electron distribution depends on what?
A
The polarity of the bond and the relative electronegativities of the bonding atoms
8
Q
Roman numeral for 1?
A
I
9
Q
Roman numeral for 2?
A
II
10
Q
Roman numeral for 3?
A
III
11
Q
Roman numeral for 4?
A
IV
12
Q
Roman numeral for 5?
A
V
13
Q
Roman numeral for 6?
A
VI
14
Q
Roman numeral for 7?
A
VII
