1 Gases consist of large numbers of molecules (or atoms, in the case of the noble gases) that are in continuous, random motion. 2  The volume of all the molecules of the gas is negligible compared to the total volume in which the gas is contained.  Attractive and repulsive forces between gas molecules is negligible.
Medical authorities say that Olympic sprint champion Florence Griffith Joyner died of suffocation month ago after suffering seizure while she slept; say seizure was caused by congenital abnormality of blood vessels in her brain (M)
Fukumoto said he did not find any abnormality of Griffith Joyner's heart during an autopsy, saying she had a ''normal athlete's heart'' that was in ''good form.'' At the time of her death, a family spokesman had said that a heart seizure was believed to have been the cause of death.