Electrolysis / Cathodes and Anodes

Question 1

define electrolysis

Answer 1

splitting up ionic compounds using electricity

Question 2

define electrode

Answer 2

rod that conducts electricity in pairs , one negative and one positive

Question 3

define electrolyte

Answer 3

ionic solution broken down by electrolysis

Question 4

what does PANIC stand for

Answer 4

positive 
anode
negative
is
cathode

Question 5

what is attracted to snides

Answer 5

negative ions / non metals

Question 6

what is attracted to cathodes

Answer 6

positive ions / metals

Question 7

what is the half equation for an anode and a halogen ion

Answer 7

2__ —> __ + 2e

Question 8

what is the half equation for an anode and a non halogen

Answer 8

4OH—> 2H20 +O2 +4e

Question 9

what is produced by an anode if the ion is a halogen

Answer 9

a halogen

Question 10

what is produced by an anode if the ion is a non halogen

Answer 10

oxygen

Question 11

what is the cathode equation of the metal is more reactive than hydrogen

Answer 11

2H +2e —> H2

Question 12

what is the cathode equation if the metal ion is less reactive than hydrogen

Answer 12

metal {3+} + {3}e —> metal

Question 13

what is produced by a cathode if the metal ion is more reactive than hydrogen

Answer 13

hydrogen

Question 14

what is produced by a cathode when the metal ion is less reactive than hydrogen

Answer 14

metal

Question 15

what does a cryolite do

Answer 15

reduces the melting point of ore which means less energy is required for electrolysis

Question 16

give an advantage of cryolite

Answer 16

cheaper to produce pure metals using metal ore