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)
Meet the woman from Perth whose super sense of smell could change the way Parkinson's disease is diagnosed. Joy Milne's husband, Les, died in June, aged 65. He worked as a consultant anaesthetist before being diagnosed with Parkinson's at the age of 45.