Batteries Flashcards
1
Q
What do the two ends in a battery do (+ and -) electrodes
A
negative - electrons are released
positive - electrons used up
2
Q
what do cells contain
A
chemicals which react to produce electricity
3
Q
what are the negative and positive electrodes separated with
A
insulation
4
Q
what happens at the - electrode
A
oxidation because electrons are lost into the external circuit
5
Q
what happens at the + electrode
A
reduction because electrons are being gained
6
Q
how can cells be made
A
connecting two different metals in contact with an electrolyte
7
Q
A
8
Q
what are batteries
A
cells connected together in series to generate higher voltage
9
Q
what is the energy transfer in a battery
A
chemical to electrical energy
