The reaction between bromine and sodium produces sodium bromide (NaBr) and heat. The chemical equation for this reaction is:

$$ 2 Na_{(s)} + Br_{2(l)} \longrightarrow 2NaBr_{(s)}$$

This reaction is an example of a redox reaction, where there is a transfer of electrons between the reactants. In this case, sodium donates electrons to bromine, reducing it from Br2 to 2Br-. This results in the formation of the ionic compound sodium bromide (NaBr).