Sodium reacts strongly with water, according to the following chemical reaction:
2Na(s) + 2H₂O → 2NaOH(aq) + H₂(g)
A colourless solution is formed, consisting of strongly alkalic sodium hydroxide (caustic soda) and hydrogen gas. This is an exothermic reaction. Sodium metal gets hot in the process and may ignite and burn with a characteristic orange flame. The hydrogen gas released during the burning process also reacts strongly with oxygen in the air.
So don’t try this at home …