SC16a Chemical Cells and Fuel Cells

Question 1

what components does a simple chemical cell have? 2

Answer 1

~Two different metals each dipped into a solution of one of their salts​
~A ‘salt bridge’

Question 2

what is a salt bridge used for?

Answer 2

allow dissolved ions to pass from one solution to another ​

Question 3

what happens to the reaction when one of the reactants get used up?

Answer 3

it stops

Question 4

what do chemical cells store?

Answer 4

their reactants

Question 5

what are fuel cells supplied with? 2

Answer 5

fuel and oxygen from outside​

Question 6

what is the only product from a hydrogen - oxygen fuel cell?

Answer 6

water

Question 7

strengths of fuel cells in cars? 4

Answer 7

~no need to recharge
~no moving parts
~if you have fuel you have voltage
~no CO2 produced when in use

Question 8

weaknesses of fuel cells in cars? 4

Answer 8

~fuel not readily available
~needs an expensive platinum catalyst
~storage of fuel
~most fuel made via hydrocarbon