Date: 2012jul4 Product: Universe Q. Universe: 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