Fuel

Question 1

What is an electrochemical cell

Answer 1

Basic system of two different electrodes in contact with an electrolyte
The chemical reaction between electrodes and electrolyte create a charge difference which allows the charge to flow and electricity to be created

Question 2

What causes more charge to flow in a electrochemical cell

Answer 2

Greater difference in reactivity in electrode
Electrolyte

Question 3

Why are some batteries non-rechargable

Answer 3

Reaction is not reversible so therefor reactants are used up

Question 4

What is a fuel cell

Answer 4

An electrical cell that is supplied with fuel and oxygen and uses the energy released to create electricity

Question 5

What is a hydrogen fuel cell?

Answer 5

Used hydrogen and oxygen as fuel to release energy

Question 6

Positives of hydrogen fuel cells

Answer 6

Minimal pollutants produced
Cleaner energy

Question 7

Negatives of hydrogen fuel cells

Answer 7

Hydrogen is highly explosive so difficult to store