7.1 - Oxidation and Reduction Flashcards
(10 cards)
1
Q
Example of identifying the oxidising reagent
A
2
Q
What must be involved in a redox reaction for it to occur?
A
- must be both an oxidising and reducing agent present
- some substances can act both as oxidising and reducing
depends on the type of reaction and conditions of the reaction
3
Q
What is a reducing agent ?
A
- a substance that reduces another atom or ion by causing it to gain electrons
- a reducing agent itself gets oxidised (loses/donates electrons)
4
Q
What is an oxidising agent?
A
- a substance that oxidises another atom or ion by causing it to lose electrons
- it gets reduced itself as it gains electrons
5
Q
Example of oxidation states
A
6
Q
What are oxidation states used to tell?
A
- tells if oxidation or reduction has taken place
- works out what has been oxidised or reduced
7
Q
What are oxidation states?
A
the charge that would exist on an individual atom if the bonding was ionic
8
Q
OILRIG
A
Oxidation is loss (of electrons)
Reduction is gain (of electrons)
9
Q
What can reduction be known as? (3)
A
loss of oxygen
addition of hydrogen
gain of electrons
10
Q
What can oxidation be known as? (3)
A
addition of oxygen
loss of hydrogen
loss of electrons
