Feul cells

Question 1

what are the 2 types of fuel cells

Answer 1

chemical cells
hydrogen-oxygen fuel cells

Question 2

what is the method to making chemical cells

Answer 2

• put a stick of zinc in zinc sulfate
• put a piece of copper in copper sulfate
• place a piece of filter paper soaked in potassium chloride solution between 2 solutions
• connect the 2 metal sticks using crocodile clips and wire to a voltmeter

Question 3

how does a chemical cell work

Answer 3

electrons will flow through the zinc to the copper (because zinc is more reactive than copper). Ions pass through the filter paper from one beaker to the other completing the circuit

Question 4

what are 2 pros of a chemical cell

Answer 4

are suitable for portable devices
are cheap to manufacture

Question 5

what are 2 cons of a chemical cell

Answer 5

may contain harmful substances
do not produce a voltage when open of the reactants is used up

Question 6

what are 2 pros of hydrogen-oxygen fuel cell

Answer 6

produce water as the only waste product
produce a voltage as long as the fuel-air is supplied

Question 7

what are 2 cons of hydrogen-oxygen fuel cell

Answer 7

not portable
expensive to manufacture

Question 8

what is a hydrogen-oxygen fuel cell

Answer 8

where hydrogen and oxygen are used to produce a voltage

Question 9

what is the word formula for a hydrogen-oxygen fuel cell

Answer 9

hydrogen + oxygen –> WATER