Chemistry is often referred to as the central science because of its role in linking the natural sciences, which include it, with applied sciences such as medicine, engineering, and the life sciences. It is also the cornerstone of knowledge in biochemistry, environmental science, earth science and other fields. After all, everything around us is made of chemicals! Chemistry provides opportunities for us to make new discoveries, develop new molecules and materials, and increase our knowledge of important processes. It teaches us to think and analyze the world around us.