What is a neutron made of?
The composition of a neutron is said to be one up quark and two down quarks.
Free neutrons decay, giving off particles, which are a proton, and electron, and an electron antineutrino.
Well.... a neutron is not known to be seen. Scientists know where a neutron is at by the research they did on it and their 5 senses. The neutron is possibly the smallest part of an atom out of a proton, an electron, and an neutron. They cant even see a neutron with one of those expensive microscopes made for atoms and things..... :) Hope this helps!! 5 senses- smell, taste, hear, see, and feel