Suggests ways in which the "drinking duck," a seemingly self-propelled duck toy, can be used to illustrate the principles of phase equilibria and thermodynamics. (MLH)

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

Illustrates that the knowledge of crystal structure, particularly face centered cubic array, can be applied to an explanation of how a solid fuel nuclear reactor works. (MLH)

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

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)