Matter: Classification of Matter: Students learn to classify matter as elements, compounds, and mixtures and to distinguish between heterogeneous and homogeneous mixture.

GK Questions and Answers on the classification of matter Everything in the universe, which is not energy, is called a matter. There are three physical states of matter - solid, liquid and gas.

Topological phases of free fermionic matter are in general characterized by an insulating gap in the bulk and protected gapless modes on the boundary of the system 1,2.Integer quantum Hall states ...