Chemistry plays a significant but often limited role in mechanical engineering, primarily through its applications in materials science. While many mechanical engineering programs include minimal chemistry in their curricula, understanding certain chemical principles is crucial for specific areas such as materials characterization, crystal structure, and the behavior of materials under various conditions. Key chemistry topics relevant to mechanical engineering include electrochemistry, which relates to corrosion and energy systems; stoichiometry, kinetics, and chemical equilibria, important for combustion engines and sensors; and thermochemistry, particularly in relation to energy systems. Basic knowledge of organic and inorganic chemistry can also be beneficial, especially in micro and nano-fabrication processes. Overall, while chemistry is not the core focus of mechanical engineering, it is essential for understanding materials and their applications in engineering contexts.