More than two millennia ago, the Ancient Greeks posited that colours, tastes and smells are a realm of appearances. In other words, what we sense is tangible. The truth is that atoms and cells form the building blocks of our tangible surroundings. Chemistry is the study of the elements and compounds formed by atoms and molecules. The aim of Chemistry is to logically explain the physical and chemical nature of things and find, through research, newer discoveries in the chemical realm. Chemistry, therefore, is a subject that changes how societies function and progress.