gas pressure and volume and changing gas pressure - Higher. If you struggled with the quiz, don't panic - we've got you! You can revise particles in gases by clicking the links below.

The properties of a substance are the properties of a huge number of particles together. In this episode, Dr Sunayana Bhargava and Tulela Pea explore the states of matter: solid, liquid and gas.

Particle sizes are determined by the mechanism through which the particles enter the atmosphere. For example, homogeneous nucleation, in which a new particle is formed directly from the gas phase ...

One of the most powerful objects in the universe is a radio quasar—a spinning black hole spraying out highly energetic ...

The focus is that matter, whether solid, liquid, or gas, is made up of particles; that dissolving and evaporation happen at the particle level; and that models can help explain these processes that we ...