topic 4: redox Flashcards
1
Q
define reduction
A
a gain in valence electrons by a reactant in any reaction
2
Q
define oxidation
A
a loss in valence electrons by a reactant in any reaction
3
Q
define a reducing agent
A
a substance that donates electrons to another reactant. as the reducing agent does this it loses electrons so its oxidised
4
Q
define an oxidising agent
A
a substance that takes electrons from another reactant. as the oxidising agent does this it gains electrons so its reducing
5
Q
definition of a standard solution
A
a solution of accurately known concentration
6
Q
in a redox reaction what happens at the same time
A
reduction and oxidation
7
Q
A
