Matter deals with topics associated with all that is related to the matter, including the properties of solids, liquids and gases. Any substance that has a definite mass and takes up space is defined as matter. All the objects that you come across every day are made up of tiny particles known as atoms. In terms of atoms, you say that matter is that which is made up of atoms. In this topic, you will learn about states, properties, change of state, and interconversions of matter. The matter is anything which occupies space and has mass. Our senses can perceive matter. Matter contains particles such as atoms, ions or molecules. The matter has three states, namely solid, liquid and gaseous. This division is based on the differences in physical properties such as mass, volume, shape, rigidity, density and arrangement of particles. The three states of matter are Solids, liquids and gases.