Study Set Content:
Hydrogen is derived from the name
hydro' and 'genes'
hydro and genes means
water forming
A colorless, odorless gas. It has the lowest density of all gases
Hydrogen
The low density of hydrogen made it a natural choice for one of its first practical uses
filling balloons and airships
Hydrogen reacts vigorously with
Oxygen
ts future in filling airships ended when the
Hindenburg disaster
easily the most abundant element in the universe. It is found in the sun and most of the stars, and the planet Jupiter is composed mostly of hydrogen.
Hydrogen
In the glass industry hydrogen is used as a
protective atmosphere for making flat glass sheets.
In the electronics industry it is used as
a flushing gas
Group 1 elements aka
alkali metals or soluble group
one electron in their outer shell
s-block metals
ionic in nature and form salts
Compounds
In all pharmaceutical applications, what is only used in alkali metals
salts
silvery white appearance OF ALKALI METALS except
Cesium(golden yellow)
is the softest of the alkali metals
cesium
generally very reactive and oxidize in the air;
alkali metals
having the lowest reactivity in alkali metals
lithium
the highest reactivity among metals
cesium
all alkali metals except lithium have to be stored in
mineral oil
Lithium as an exception is normally stored under
inert gas such as argon
