Im going to write the chemical equations with word summary below it
NaCl(s) --> Na+(aq) + Cl-(aq)
When solid table salt (NaCl) is added to water, the agents of the compound ionise into Sodium + and Chloride (-).
When the species are present in their IONISED forms, the solution can now conduct electricity, this is becuase electricity can move across the aqueous solution by travelling between the charged particles