A chemical combination of two or more dissimilar atoms is called a compound.

Here's why:

* Dissimilar atoms: This means the atoms are of different elements.

* Chemical combination: This indicates that the atoms are bonded together through chemical bonds, forming a new substance with properties different from the individual elements.

Examples of compounds:

* Water (H₂O): Made of hydrogen (H) and oxygen (O) atoms.

* Carbon dioxide (CO₂): Made of carbon (C) and oxygen (O) atoms.

* Sodium chloride (NaCl): Made of sodium (Na) and chlorine (Cl) atoms.