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chemical reaction
During a(n) ________, old bonds are broken and new bonds are formed.
usecarbon dioxide
Noisy during ________ is a waste productmany moving parts.
amount of electricity
Small in size for the ________ produced.
Zinc
________ is the more reactive metal and forms ions more easily, readily releasing electrons.
Hydrogen
________ is difficult to storenot many places to fill up with ________ fuel.
Energy
________ must be supplied to break existing bonds, so bond breaking is an endothermic process.
electrolyte
The ________ used also affects the voltage as different ions react with the electrodes in different ways.
hydrogen oxygen
A(n) ________ fuel cell and electric motor are much quieter, and need less maintenance, than a petrol or diesel engine, but the hydrogen still needs to be stored in a container- like a tank.
endothermic reactions
In ________ the energy used to break bonds is greater than the energy released by forming them.
Chemical cells
________ use chemical reactions to convert and transfer energy to electrical energy.
simple cell
A(n) ________ is a source of electrical energy.
Fuel cells
________ will produce a voltage continuously, provided they have a constant supply of fuel and oxygen (from the air)
Energy
________ is released when new bonds are formed, so bond formation is an exothermic process.
A hydrogen-oxygen fuel cell and electric motor are much quieter, and need less maintenance, than a petrol or diesel engine, but the hydrogen still needs to be stored in a container
like a tank
Cells
Chemical cells use chemical reactions to transfer energy by electricity
Voltage
an electromotive force or potential difference expressed in volts.
Non-rechargeable
An electrochemical cell in which an irreversible chemical reaction generates electricity; a cell that cannot be recharged.
Bonds
atoms combining to form chemical compounds and bring stability to the resulting product
Note 
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