Reaction of sodium and chlorine:
In the reaction the sodium was glowing giving off heat energy and were reacting with the chlorine. The chlorine was used up and made sodium chloride.
Na + Cl2 ----> NaCl
2Na + Cl2 ----> 2NaCl
The reactants are dangerous because they are trying to lose/gain electrons. The products are not dangerouse because they have a full outer shell
Atoms like to have full outer shells. To do this they need to gain or lose electrons…