Graphing the Periodic Table. Quarks: Inside the Atom. Matter is all the stuff that we see, feel, and smell around us.
By definition, matter has mass and takes up space. Matter includes substances such as water, wood, rock, metal, plastic, and air, as well as countless other materials. Atom Builder. Matter is all the "stuff" that we see, feel, and smell around us.
By definition, matter has mass and takes up space. It includes substances like water, wood, rock, metal, plastic, air, and countless other materials. All types of matter are built from tiny particles called atoms. The Atom.