What is Matter Properties describe matter. A block of wood, milk, and air all have properties. All the material on earth is in three states-solid, liquid, and gas. In other words, you group the objects together according to their properties. States of Matter Matter occupies space and has mass.
Chemistry deals with the composition, properties and behavior of matter.
Matter is everything. From air to water to rocks, and even you. There are three common states of matter. Liquid, like water. Gas or vapor, like steam.