Burning candles are made of wax and have a wick that, when lit, produces light and heat. The heat melts the wax near the wick, which then vaporizes and burns, creating a flame. This process releases energy in the form of light and heat, making candles popular for both illumination and ambiance. Candles come in various shapes, sizes, and scents, often used in celebrations, religious ceremonies, or for relaxation. They can be made from different materials, including paraffin wax, soy wax, and beeswax. Safety is important when using candles, as they can pose a fire hazard if left unattended.