Most commonly this might be aluminum. Others such as beryllium may be used. For more details please see the wikipedia articles about rocket propellants and solid fuel rockets.
Rocket fuel contains oxygen, which is not found in space. A rocket in space could theoretically work in space if it were to carry its own oxygen, but other fuels such as hydrogen are more efficient.
liquid fuel
gasoline along with liquid oxygen, so the fuel can burn
Rocket Fuel Inc. (FUEL) had its IPO in 2013.
Rocket fuel.
Modern model rocket fuel is a solid fuel.
The symbol for Rocket Fuel Inc. in NASDAQ is: FUEL.
At the very bottom is the nozzle, after that is the fuel. Depending on how big the rocket is and how much fuel it needs determines the size of the chamber
The fuel tank capacity for the BSA Rocket 3 would be about 2.5 Gallons although they are rare to find. This is for an old model from 1969 that the tank was found for sale.
As of July 2014, the market cap for Rocket Fuel Inc. (FUEL) is $854,306,979.24.
The two main types of rocket engines are Solid fuel rocket engines and Liquid fuel rocket engines.
Some, or all of the fuel circulates through a cooling jacket around the rocket engine before it is burnt and this cools the rocket's engines. But there might be more to it than that.