Activity Constructing a model of an electric drauit.
What you need: 2 batteries 1.5v, electrical tape, socket, 1 flashlight bulb
15 v, two 25 cm. insulated wire with end scrapped, 1/8
size illustration board, scissors
1. On the illustration board, arrange a circuit to light a bulb
2. Screw the bulb into a socket. Connect a copper wire to each of the sockettering
3. Connect a piece of copper wire to the switch. Connect the lone end of the wire to the nerve end of the
battery
4. Connect one end of the copper wire by winding it which is attached to the socket) to the positive end of the
battery. Connect the other end of the socket to the switch. Did the bulb light
5. Fasten the wires, batteries, and bulb into the illustration using the electrical to secure the circuit and connections
6. Close the open parts of the switch. What happened to the bulb? Why?
7. Switch it off. What happened to the bulb?​

explanation:

metals have excess of electrons whereas non-metals have deficiency of electrons. thus, in order to gain stability metals easily donate their electrons to the non-metals.

for example, electronic configuration of sodium is and electronic configuration of phosphorous is .

when a phosphorous atom and sodium atom combine together then sodium will donate is extra one electron to the phosphorous atom. as a result there will be formation of ionic bond between sodium and phosphorous.

the reaction will be as follows.

there, are three sodium sodium atoms and each of them will donate its one extra electron to phosphorous atom. thus, the sub-shell of phosphorous gets completely filled.  

thus, we can conclude that electrons are transferred from atoms of sodium to atoms of phosphorous. this transfer makes the sodium atoms donate one electron and the phosphorous atoms to gain one electron. as a result, the sodium and phosphorus atoms strongly attract each other.