You're very close! Hydrogen and chlorine don't react to form "chloride." They react to form hydrogen chloride (HCl), a compound that contains both hydrogen and chlorine.

Here's the breakdown:

* Hydrogen (H2) is a diatomic gas.

* Chlorine (Cl2) is also a diatomic gas.

* Hydrogen chloride (HCl) is a colorless gas that dissolves in water to form hydrochloric acid.

The reaction:

H₂ (g) + Cl₂ (g) → 2 HCl (g)

This reaction is a combination reaction, where two reactants combine to form a single product. It's also an exothermic reaction, meaning it releases heat.

Important note: The term "chloride" usually refers to an anion (negatively charged ion) with the formula Cl⁻. It's not a compound on its own.