Final answer:
Flammable materials can easily catch fire and ignite at low temperatures, while combustible materials require higher temperatures to ignite.
Step-by-step explanation:
Flammable and combustible materials are substances that can catch fire and burn.
Flammable materials are those that can easily catch fire and ignite at relatively low temperatures. They have a lower flash point, which is the minimum temperature at which they can vaporize and ignite when exposed to an open flame or heat source. Examples of flammable materials include gasoline, alcohol, and propane.
Combustible materials are those that have a higher flash point, meaning they require higher temperatures to ignite. They may still burn, but it takes more heat or a longer exposure to ignite them. Examples of combustible materials include wood, paper, and oil.