Salt, Sulfur, Mercury

Salt (sodium chloride) is a common mineral used to flavor and preserve food. Sulfur is a yellow element essential for life, found in amino acids and vitamins; it’s also used in agriculture and industry. Mercury is a dense, silvery liquid metal historically used in thermometers and industrial processes, but it is toxic and human exposure can cause health issues. These elements play important roles in chemistry and daily life, with salt supporting nutrition, sulfur being vital for biological functions, and mercury having specialized industrial applications despite health risks.