Chemists are scientists who study the composition, structure, and properties of matter. They explore how substances interact and change during chemical reactions. Chemists work in various fields, including pharmaceuticals, environmental science, and materials science, to develop new products and improve existing ones. In their work, chemists often use tools and techniques such as spectroscopy, chromatography, and titration to analyze substances. They may also collaborate with other scientists, such as biologists and physicists, to solve complex problems and advance scientific knowledge. Their research plays a crucial role in areas like medicine, energy, and technology.