* "Water, a simple compound made of hydrogen and oxygen, is essential for all life." (Describing a simple compound)
* "Scientists are studying the effects of various organic compounds on the growth of bacteria." (Focusing on a class of compounds)
* "The chemical compound found in the meteorite was previously unknown to science." (Highlighting a specific discovery)
* "The complex compound was synthesized in the laboratory, proving the theory." (Emphasizing the process of creation)
* "By analyzing the compound's structure, researchers were able to determine its properties." (Connecting structure and function)