An curved arrow pointing right. Researchers at the FAA Center of Excellence at Purdue University created a simulation showing the mechanics of a sneeze in airplane cabins. Animation courtesy of ...

The particles are arranged differently and move in different ways. This table summarises the arrangement and movement of the particles in solids, liquids and gases and shows simple diagrams of the ...

Describe the arrangement and movement of the particles in a solid, liquid and gas. In a solid, the particles pack together tightly in a neat and ordered arrangement. The particles are held ...

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 ...