- 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.
- Chemical element - Constituent of air - Gas that makes up 78 per cent of the Earth's atmosphere - Gas that makes up 78 per cent of the Earths atmosphere - Gas, N - Gaseous element - Get Ron in to fix the gas
- Chemical element - Element that makes up diamonds - Element with symbol C - Non metallic element - Non-metallic element - Nonmetallic element - An elementary substance, not metallic in its nature, which
is present in all organic compounds. Atomic weight 11.97. Symbol C. it
is combustible, and forms the base of lampblack and charcoal, and
enters largely into mineral coals. In its pure crystallized state it
constitutes the diamond, the hardest of known substances, occuring in
monometric crystals like the octahedron, etc. Another modification is
graphite, or blacklead, and in this it is soft, and occurs in hexagonal
prisms or tables. When united with oxygen it forms carbon dioxide,
commonly called carbonic acid, or carbonic oxide, according to the
proportions of the oxygen; when united with hydrogen, it forms various
compounds called hydrocarbons. Compare Diamond, and Graphite.
- 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
- A halogen chemical element - One of the elements, related in its chemical qualities to
chlorine and iodine. Atomic weight 79.8. Symbol Br. It is a deep
reddish brown liquid of a very disagreeable odor, emitting a brownish
vapor at the ordinary temperature. In combination it is found in minute
quantities in sea water, and in many saline springs. It occurs also in
the mineral bromyrite.
- One of two or more atoms with the same atomic number that contain different numbers of neutrons - Slightly altered atom - Variation of a chemical element