4.5.2 Chemical cells and fuel cells (might need) Paper 1

Question 1

What is a cell

Answer 1

A system that contains chemicals which react and produce electricity

Question 2

What effects the voltage of a cell

Answer 2

Different metals will react differently with the same electrolyte
The bigger the difference in reactivity of the electrodes the bigger the voltage of the cell
You can predict what the voltage of a cell might be from information about the voltages of other cells
The electrolyte used in a cell will also affect the size of the voltage
A battery is formed by connecting 2 or more cells together in series

Question 3

What do fuel cells do

Answer 3

They use fuel and oxygen to produce electrical energy

Question 4

What do fuel cells do

Answer 4

They use fuel and oxygen to produce electrical energy

Question 5

Advantages of hydrogen-oxygen fuel cells

Answer 5

Dont produce as many pollutants
They store more energy
Cheaper than batteries

Question 6

Disadvantages of fuel cells

Answer 6

Takes up more space to store than batteries

Harder to store safely