Electrolysis

Question 1

What is electrolysis?

Answer 1

the splitting up of ionic substances

Question 2

what is an electrolyte?

Answer 2

the liquid that conducts electricity

Question 3

define oxidation?

Answer 3

the loss of electrons

Question 4

define reduction?

Answer 4

the gain of electrons

Question 5

define a cation?

Answer 5

a positive ion

Question 6

define an anion?

Answer 6

a negative ion

Question 7

what happens to the positive ions in electrolysis?

Answer 7

they get attracted towards the negative electrode, then gain electrons (reduction)

Question 8

what happens to the negative ions in electrolysis?

Answer 8

they get attracted towards the positive electrode, losing electrons (oxidation)

Question 9

define cathode?

Answer 9

the negative electrode

Question 10

define anode?

Answer 10

the positive electrode

Question 11

how is aluminium extracted?

Answer 11

electrolysis

Question 12

what is the ore containing aluminium called?

Answer 12

bauxite

Question 13

what is bauxite made of?

Answer 13

aluminium oxide

Question 14

what is cryolite used for, in aluminium electrolysis?

Answer 14

to lower the temperature/costs, as aluminium has a high melting point, and is expensive to extract.

Question 15

what does the acronym ‘OILRIG’ stand for?

Answer 15

Oxidation Is Loss, Reduction Is Gain

Question 16

which ions are more likely to be discharged?

Answer 16

the less reactive ones

Question 17

do metals need to gain or lose electrons?

Answer 17

lose

Question 18

do non metals need to gain or lose electrons?

Answer 18

gain

Question 19

what does the acronym ‘PANiC’ stand for?

Answer 19

Positive Anode, Negative is Cathode