What is Matter?. Classifying Matter Matter is used to describe anything that has mass and takes up space. Matter can be divided into two categories: Mixtures:
States of Matter A Kinetic Experience. Kinetic Theory of Matter Also known as the Molecular theory of matter: All matter is made of molecules and atoms.
Elements, Compounds and States of Matter. History of the Periodic Table ~400 BCE - Socrates initiates Socratic thinking in Athenian Greece and is credited.