- Balloon gas - Gaseous element, symbol He - Inert gas - Light gas - Noble gas - A gaseous element found in the atmospheres of the sun and
earth and in some rare minerals.
- Colourless gas - First periodic table element - Information on old spa resort gas - Spa resort information on light gas - Type of nuclear bomb - A gaseous element, colorless, tasteless, and odorless,
the lightest known substance, being fourteen and a half times lighter
than air (hence its use in filling balloons), and over eleven thousand
times lighter than water. It is very abundant, being an ingredient of
water and of many other substances, especially those of animal or
vegetable origin. It may by produced in many ways, but is chiefly
obtained by the action of acids (as sulphuric) on metals, as zinc,
iron, etc. It is very inflammable, and is an ingredient of coal gas and
water gas. It is standard of chemical equivalents or combining weights,
and also of valence, being the typical monad. Symbol H. Atomic weight
1.
- Ace high? - Aeronaut - Airman - First person to be involved in plot for TV trial - Flyer - Gas light used to direct hot-air balloon - He demonstrates his expertise in banking