Chemistry Study guide Concepts 1. Understanding the chemical composition of molecules is important in our understanding of the functions of biological molecules, organelles, cells, tissues, and organs. Chemical bonding occurs for electron shell stability of the atoms involved. Chemical bonds and electron shells possess energy that is utilized by living things. The composition of molecules helps determine their structure and function.
Water is a basic requirement for life.
Information to know 1. The structure of an atom 3. The difference between polar and nonpolar molecules 5. The properties of water.