10. Reduction and Oxidation Flashcards
1
Q
Does Reduction or Oxidation lose oxygen?
A
reduction
2
Q
Does Oxidation lose or gain oxygen?
A
gain oxygen
3
Q
Pick the correct word in the bracket
Reduction: (gain/lose) hydrogen
Oxidation: (gain/lose) hydrogen
A
Reduction gain hydrogen
Oxidation lose hydrogen
4
Q
Which process loses electrons? (oxidation/reduction)
A
oxidation
5
Q
In the process of reduction electrons are gain. (True/False)
A
true
6
Q
Define oxidation state
A
- the charge an atom of an element would have
- can take on a (+)/(-)/0 charge
- lose electron= increase oxidation state
- gain electron= decrease in oxidation state
7
Q
How to test for oxidising agents?
A
- using potassium iodide
- It will turn from colourless to reddish brown
8
Q
How to test for reducing agent?
A
- using potassium manganate
- will turn from purple to colorless
9
Q
Define an oxidising agent
A
- Oxidise the other substance
- decrease the oxidation state
- gain electrons
10
Q
Define a reducing agent
A
- Reduces the other substance
- Decrease in oxidation state
- gain electrons
