Chemistry is the science of matter and molecules and the changes they undergo during chemical reactions. Everything in the world is made of chemical elements and the molecules they form. By studying chemistry, we can understand the making of aspects in our everyday lives. Chemistry is seen in most fields but especially sciences and medicine. As a pre-veterinarian student, chemistry is important because vets are certified to administer pharmaceuticals and other medical prescriptions, which it is their responsibility to know the drugs, what they contain and any affects that will occur to the animal when administered. A chemical molecule that I feel is important in my career of veterinarian medicine would be water, H₂0. If the world did not have water, humans and animals would not survive. Water is a basic necessity for all living organisms. If there came a time when no animals were around, veterinary science would become nonexistent for the soul reason that animals are the building blocks to this medical field.