Sodium (Na) and chlorine (Cl) react chemically to form sodium chloride (NaCl), which is common table salt.

Here's a breakdown:

* Sodium is a highly reactive metal.

* Chlorine is a highly reactive non-metal.

* When they react, sodium loses an electron, becoming a positively charged sodium ion (Na+).

* Chlorine gains that electron, becoming a negatively charged chloride ion (Cl-).

* The opposite charges attract each other, forming an ionic bond and creating the compound sodium chloride (NaCl).

This reaction is a classic example of an ionic bond and is fundamental to understanding how many chemical compounds form.