Date: 2012jul4 Product: Universe Q. What is matter made of? A. Matter is made of atoms and molecules. Atoms and molecules are made of electrons, protons and neutrons. Electrons are leptons. Protons are made of 2 up quarks and 1 down quark. Neutrons are made of 1 up quark and 2 down quarks. So matter is made of leptons and quarks. http://en.wikipedia.org/wiki/Matter