Whats the Balanced chemical equation for heating sodium chloride and what type of a reaction is it?
My guess would be that this was rather the dissociation of Sodium Carbonate or Sodium Hydrogen Carbonate.

The equations for the dissociation of Sodium Carbonate and Sodium Hydrogen Carbonate, respectively, are as follows:


  $$\ce{Na2CO3 -&gt; Na2O + CO2}$$


$$\ce{and}$$


  $$\ce{2 NaHCO3 -&gt; Na2O + H2O + 2 CO2}$$