Demand
a high level of need or requirements
Equitably
fairly according to need and for the common good
Electrolyte
a liquid substance which can conduct electricity
Electrode
an electric conductor that makes contact with a non- metallic part of an electrical circuit
Galvanished
coated with zinc
Citric acid
a mild acid found in citrus fruits such as lemons
check page 106
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check page 108 and 109
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