Highly flammable & once used for photographic film, it was the first commercial synthetic plastic
Emeralds & aquamarines are forms of this mineral
Dmitry Mendeleyev & Julius Meyer independently proposed a principle that led to this table
Brimstone is another name for this light yellow nonmetallic element
It's the branch of chemistry that studies compounds containing carbon
Chemists use this whirling device to separate solids from liquids or one liquid from another
It's 1 or 2 or more atoms of the same element that differ in atomic weight
The Columbia, one of these between Valdez & Anchorage, Alaska can move about 65 feet per day
In 1909 Dutch botanist Wilhelm Johannsen first proposed this name for the unit of heredity in living things
The largest living reptile is probably the saltwater species of this animal, which may weigh more than a ton