Learn about solid, liquids and gases with these interactive learning resources for KS2 Science students aged 7-11 from BBC Bitesize.

The density of an object is calculated by dividing the mass by the volume. Find out more with BBC Bitesize. For students between the ages of 11 and 14.

We all know from middle school science class that matter changes between a solid, a liquid, and a gas when you change the temperature or pressure acting on it. (Yes, some elements will change ...

The four fundamental states of matter are solid, liquid, gas and plasma, but there others, such as Bose-Einstein condensates and time crystals, that are man-made.