Ox, Reduc, and Redox Flashcards Preview

4.02 A Level Chemistry > Ox, Reduc, and Redox > Flashcards

Flashcards in Ox, Reduc, and Redox Deck (11)
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1
Q

State what is meant by the term ‘oxidation’

A

Addition of oxygen to a substance

Loss of electrons

2
Q

State what is meant by the term ‘reduction’

A

Removal of oxygen to a substance

Gain of electrons

3
Q

State what is meant by the term ‘disproportionation’

A

When atoms of the same element are oxidised and reduced simultaneously

4
Q

State what is meant by the term ‘oxidising agent’

A

Aids oxidation of another species by being reduced itself

5
Q

State what is meant by the term ‘reducing agent’

A

Aids the reduction of another species by being oxidised itself

6
Q

What are the 5 steps/rules for doing half equations?

A
1 - balance element of interest
2 - Balance any O's with H2O
3 - Balance any H's using H+
4 - Balance any charges using e-
5 - Check your Ox numbers
7
Q

What is the oxidation state for fluorine and other G7 atoms (except with F or O)?

A

-1

8
Q

What is the oxidation state for oxygen (except in peroxides)?

A

-2

9
Q

What is the oxidation state for hydrogen?

A

+1

10
Q

What is the oxidation state for hydrogen in metal hydrides?

A

-1

11
Q

What is the total of oxidation state in a compound?

A

0