What is an example of a chemical compound?
Water, carbon dioxide and glucose are all examples of chemical compounds. Their formulas are H2O, CO2 and C6H12O6 respectively. The formula denotes the number of each type of atom in a molecule. A compound is a pure substance which means that each molecule is identical and the elements always appear in the same ratio.
In a mixture the particles are not identical. For example a mixture of ethanol (CH3OH), a compound, and water contains two different types of molecules and they can be in various proportions to each other.
One way to recognize a chemical compound is by the fact that it has a chemical formula. You can also recognize compounds by their chemical names. For example “carbon dioxide” tells you that the formula contains one carbon and two oxygen atoms.