Combustibles are materials that can ignite and burn when exposed to heat or flames. Common examples include wood, paper, and certain types of fuels like gasoline. These substances release energy in the form of heat and light when they undergo a chemical reaction known as combustion. In many applications, combustibles are used for heating, cooking, and powering engines. Safety measures are essential when handling combustibles to prevent fires and ensure proper ventilation. Understanding the properties of combustibles helps in managing risks associated with their use in everyday life and industrial settings.