Complete Table 1.1 to describe the structures of solids, liquids and gases in terms of particle separation, particle arrangement and particle motion.

Name each physical change: solid to liquid, gas to liquid, solid to aqueous.

Describe, in terms of particles, why gases diffuse.

State what determines the relative rate of diffusion of gases at constant temperature.

State two other adverse effects of oxides of nitrogen (other than acid rain).

Name the toxic gaseous product of the incomplete combustion of hydrocarbon fuels.

Name the two non-toxic gases formed in the catalytic converter.