(c) phenomenon of electro-magnetic nu or
Electrode B
Electrode A
Tap Water
(a) Give the names of the Electrodes A and B.
(b) Name the process associated with the circuit shown here.
(c) Name the gases produced at A and B.
An Electrode 'A is connected to the positive terminal while Electrode B.
connected to the negative terminal of a battery, as shown in the diagram

answer; /// i do believe that the correct answer is (a) boiling

  the   balanced   equation   for   reaction of   ca metal   with   o2 to   produce   cao   is as below

2 ca+ o2→ 2 cao2

  explanation

the reaction is   balanced     since the   number of atoms   in reactant side is   equal to   number of atoms   in   product side.   for   example   they   are 2   atom of   ca in   reactant   side   and   2   atoms of ca   in   the product side.

  the   process   is a   meet the   requirement   of   redox   reaction because :     calcium   is   oxidized   from   oxidation state 0   to 2+   while   oxygen   is reduced from   oxidation   state   0   to 2-