Anything that reacts at a very fast rate and creates a lot of resultant material that expands very quickly and as much as possible.
Oxy-acetylene and gunpowder can be used in small rockets.
The bigguns are a bit more complicated and use a mix of compressed and cooled Hydrogen and Oxygen:Ozone mix(3:1)
Liquid rockets can use a single liquid, two liquids or, rarely, three fuels (more correctly called propellants). The most common type uses two propellants, generally one liquid fuel and one oxidizer -- such as liquid hydrogen (fuel) and liquid oxygen (oxidizer).
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almost anything that burns:gasolinekerosenehydrazinerubberasphaltaluminum powderetc.But remember the rocket must also carry its own oxidizer.
rockets were used for military use and fireworks
Rockets
Liquid rockets can use a single liquid, two liquids or, rarely, three fuels (more correctly called propellants). The most common type uses two propellants, generally one liquid fuel and one oxidizer -- such as liquid hydrogen (fuel) and liquid oxygen (oxidizer).
The rockets that have been used carry their one oxygen for the combustion. Or they use a fuel that dosn't need to ignite. These latter propellants rely only on Newtons second law.
F. A. Williams has written: 'Fundamental aspects of solid propellant rockets' -- subject(s): Solid propellant rockets, Solid propellants
A rocket hasn't a chemical equation; for a detailed discussion about propellants see the link below.
A rocket that falls to pieces during launch is known as a multistage rocket. These rockets use two or more stages, each with their own engines and propellants. During launch, the stages are jettisoned to reduce mass and improve thrust for the remaining stages.
LIQUID PROPELLENTS OR SOLID PROPELLANTS
Other than rockets that use solid propellants or liquids (hydrazine, kerosene), large multi-stage rockets can be fueled with liquid hydrogen and liquid oxygen. The frigid liquid form is used because it provides a greater volume of propellant than simply pressurized gas. The more fuel it has, the faster and higher a rocket can go.
Chemical energy (from burning the fuel)
Some books about rockets include "Ignition!: An Informal History of Liquid Rocket Propellants" by John D. Clark, "Rocket Boys" by Homer Hickam, and "SpaceX: Making Humans a Multiplanetary Species" by Martin Giles.
Fredric B. Clarke has written: 'A study of the ignition lag of spontaneous rocket propellants' -- subject(s): Combustion, Fuel, Rockets (Aeronautics)
Water rockets use water and air modern rockets use thrust and oxygen.
congreve rockets