Presents an approach to the understanding of gas laws using such common phenomena as insect fogging, sea breezes, and hot air balloons. (GS)

Discusses the effect of replacing argon gas with krypton gas in electric light bulbs. (RH)

Describes bonding properties that account for the difference in toxicity between hydrogen cyanide and carbon monoxide. Uses the concepts of intermolecular and intramolecular forces in explaining the operation of pressure sensitive adhesives. Gives a definition of a cubic crystal class. (GS)