A metal and a non-metal chemically combined form a compound. More specifically, these compounds are called ionic compounds.

Here's why:

* Metals tend to lose electrons, forming positively charged ions (cations).

* Nonmetals tend to gain electrons, forming negatively charged ions (anions).

The strong electrostatic attraction between these oppositely charged ions is what holds the compound together.

Examples of ionic compounds:

* Sodium chloride (NaCl): Sodium (Na) is a metal, and chlorine (Cl) is a nonmetal.

* Magnesium oxide (MgO): Magnesium (Mg) is a metal, and oxygen (O) is a nonmetal.

* Potassium bromide (KBr): Potassium (K) is a metal, and bromine (Br) is a nonmetal.

Let me know if you'd like to learn more about ionic compounds!