Chemistry has a rich history, including ancient theories on the nature of matter and recipes for converting lead into gold. Modern research and applications are equally exciting, and include topics such as creating more efficient solar collectors and the reactions of natural and human-made chemicals in the environment. We will explore these topics as we learn about atomic structure and the periodic table, reaction stoichiometry, chemical bonds, molecular structure and other concepts central to modern chemistry. Many of these topics are related to current health topics and environmental issues. For example, discussions of pH include research on ocean acidification, and our exploration of thermochemistry includes calculations of the fuel value of traditional and alternative fuels.