- Abundant element - Chemical element - Element Si - A nonmetalic element analogous to carbon. It always occurs
combined in nature, and is artificially obtained in the free state,
usually as a dark brown amorphous powder, or as a dark crystalline
substance with a meetallic luster. Its oxide is silica, or common
quartz, and in this form, or as silicates, it is, next to oxygen, the
most abundant element of the earth's crust. Silicon is
characteristically the element of the mineral kingdom, as carbon is of
the organic world. Symbol Si. Atomic weight 28. Called also silicium.
- Abundant element - Atmospheric element essential for respiration - Chemical element - Colourless gas - Foxy gentlemen use life gas - Gas vital to life - Its atomic number is 8
- Element Al - Most abundant metal element in the Earth's crust - The metallic base of alumina. This metal is white, but
with a bluish tinge, and is remarkable for its resistance to oxidation,
and for its lightness, having a specific gravity of about 2.6. Atomic
weight 27.08. Symbol Al.
- 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.