Digital Interactive Content Heat The three states of matter Can you recall the properties of the three states of matter, solid, liquid and gas? The fourth state of matter Plasma is the fourth state of matter. It is superheated matter – so hot that the electrons are ripped away from the atoms forming an ionized gas! How strong is Oobleck? Oobleck is an example of a non-Newtonian fluid which acts like a liquid when force is applied gently on it but acts like a solid when rapid force is applied.