Particles can be atoms, molecules or ions. Particles behave differently in solids, liquids and gases. The particle model explains the ... the state of substances Gas pressure Pressure in gases ...

As energy from the sun reaches Earth, some solar radiation is absorbed by the atmosphere, leading to chemical reactions like ...

A new approach for modeling these reactions, developed by a team led by scientists at Penn State, may improve our ...

liquids and gases by considering the molecules they are made from and their motion. For gases, the kinetic theory model explains that gas pressure is caused by the collisions between the particles ...