Chemical compounds are represented using chemical formulas, which provide information about the types and quantities of atoms in the compound. Here are a few examples of chemical compounds:

1. Water: H2O
2. Carbon Dioxide: CO2
3. Sodium Chloride (Table Salt): NaCl
4. Glucose: C6H12O6
5. Ethanol: C2H5OH
6. Methane: CH4
7. Ammonia: NH3
8. Nitric Acid: HNO3
9. Calcium Carbonate (Limestone): CaCO3
10. Sulfuric Acid: H2SO4

Each element is represented by its chemical symbol, and the numbers following the symbols indicate the number of atoms of each element present in the compound. For example, in the formula H2O, there are two hydrogen (H) atoms and one oxygen (O) atom bonded together.

Chemical compounds have specific properties and behaviors based on the types of atoms they contain and how those atoms are arranged and bonded together. These properties determine how compounds interact with other substances and contribute to various chemical reactions and processes.