When you add together water and sodium, was any gas produced in the reaction?

Yes, sodium hydroxide, which is an exothermic reaction

Explanation:

Water and sodium can mix together to form sodium hydroxide (NaOH) and Hydrogen gas. When sodium metal heated, it may ignite and burn with a characteristic orange flame

sodium hydroxide

Explanation:

When sodium is dropped in cold water, it reacts explosively and burns with a golden yellow flame. The reaction is exothermic and vigourus. It form sodium hydroxide with the liberation of hydrogen gas.