👉 Reagents are substances that react with other substances to produce a desired product. They can be used in various chemical reactions, including those involving metal and non-metal elements, organic compounds, and physical processes such as combustion or oxidation. In chemistry, reagents are typically denoted using the Latin letter "R" followed by the element involved (e.g., R2O3 for potassium dichromate). For example, a reagent containing potassium dichromate (K2Cr2O7)