Its components can be separated by physical methods and can appear in different proportions

Their names and symbols are found on the periodic table.

They are formed by the physical combination of two or more substances in variable proportions.

Pure substances made up of a single type of atom.

Pure substances made up of various types of atoms that cannot be separated into simpler substances.

They cannot be separated into other simpler substances by physical or chemical procedures.

Pure substances whose properties are different from those of the elements that form them.

Cuando son homogéneas también reciben el nombre de disoluciones

Its composition is fixed and invariable and is represented by its chemical formula.