Battery

Principle of Battery:

      A battery is made of two electrodes ( with 2 different metals ) and electrolyte ( solution can conduct electrical current ).  The basic principle is: one electrode loses electrons from the electrolyte, and the other electrode obtains electrons from the electrolyte. With this principle in mind, the target to make a good battery is to look for proper materials for electrodes ( 2 different metals ) and electrolyte in order to have the desired chemical reaction to happen.

       The possible combinations are:

       I.          electrodes: copper wire and steel paper clip

                   electrolyte: lemon

      II.          electrodes: zinc and copper

                    electrolyte: pineapple

               ...

          Try to use different materials to generate biggest electrical current.