ELI5: Explain Like I'm 5

Chemical reactor

A chemical reactor is like a container that helps scientists and engineers create reactions between different chemicals. It looks like a big pot, and inside it there are special ingredients like liquids, gases and powders which scientists and engineers mix together. When they mix all of the ingredients together, the chemical reactor helps create a reaction. This reaction often changes the ingredients and creates something new. Chemical reactors are used by scientists and engineers to make useful things like medicines, fertilisers, fuels and other products.