How do rockets work? What chemicals are used and what reactions happens with those chemicals to make a rocket fly?

Chemical rocket engines use a fuel (something to burn) and an oxidiser (something to react with the fuel). ... As the propellant reacts inside a combustion chamber, the chemical reaction produces hot gases. It is the ejection of these rapidly expanding hot gases at high speed from the rocket nozzle that

( I found this on a website called Science Learning. Full credit to them and their work. Check it out for more information)

zfoods? ok, pressure is used to keep the heat inside and to keep the food perfect.