The products of the reaction between sodium oxide (Na₂O) and water (H₂O) are sodium hydroxide (NaOH) and heat.

Here's the balanced chemical equation:

Na₂O + H₂O → 2NaOH + heat

This reaction is a highly exothermic reaction, meaning it releases heat. Sodium hydroxide is a strong base, and its formation is the driving force behind this reaction.