Unit 11: Redox Reactions and electrochemistry study guide

Question 1

What do the Pneumonic’s OIL, RIG, LEO, GER stand for

Answer 1

OIL: oxidation is loss of electrons
RIG: reduction is gain if electrons
LEO: lose electrons oxidation
GER: gain electrons reductions

Question 2

define oxidation

Answer 2

loss of electrons; oxidation state increase (becomes more positive)

Question 3

define reduction

Answer 3

gain electrons (e-); oxidations state decreases (becomes more negative)

Question 4

define Oxidation number

Answer 4

change of ions

Question 5

define redox reaction

Answer 5

driven by a change in change; show a transfer of electrons

Question 6

assign oxidation numbers to each element in the compounds below
O2____ Li____ Si_____

Answer 6

O2- 0 because it is a compound and a single element

Li and Si have 0 because they are only one element (pure element)