6. I
Section Three! disc
d
over
e
Discoverer- Henry Cavendish Hyd
roge
n
October 10, 1731- February 24, 1810
Attended Cambridge University from 1749-
1753, but left without a degree
An English Chemist and Physicist who
discovered Hydrogen and also discovered
Nitrogen
1st to describe the composition of water
Made the first accurate measurement of the
density of the earth
Hydrogen was discovered in 1766 in the
United Kingdom
7. Environmental/ Social Impacts-
Section Four!
Harmful- highly flammable
with a nearly-invisible flame that
can cause accidental burns. Also,
getting it from mines is harmful to
people and the environment!
Fuel Cells- an engine that
burns pure hydrogen makes no
pollution. In fact, the only product
is clean water! NASA has used
liquid hydrogen since the 1970's!
Problem- we could run out of the
hydrogen and the water to fuel the
cells. We are already running out
of water, without the fuel cells!
This is promising for heat,
8. 1
Electron
My
Drawing
of
Hydrogen
1 Proton
No
Neutrons!
9. Section 6!
Family Group and Name- Group One, No Name! (it is not
an Alkali Metal)
Non-metal
Density: 0.00008988 g/cm3
Melting Point: -259.34 degrees Celsius
Boiling Point: -252. 87 degrees Celsius
NASA image-
Colorless immense
amounts of
Odorless hydrogen in
remote
Tasteless galaxies
10. Uses of Hydrogen!
Cost- pure- $12 for 100 mg.
1. Haber Project (production of ammonia)
2. Hydrogenation of fats and oils (charge with or
cause to be combined with Hydrogen)
3. Methanol Production
4. Hydro-cracking (breaking large hydrocarbons
into smaller pieces)
5. Hydrodesulfurization
6. Metal Refining
12. Uses of Hydrogen- Fuel Cells
Healthier alternative for current
hydrocarbon(oil, gas, and coal)
based economy.
The only byproduct is clean water-
NO POLLUTANTS
Produces energy with none of the
pollution
Unfortunately, this is not possible
until solar or wind energies can be
used commercially to split water
into hydrogen and oxygen
Problem- we don't have enough
available water to use for this
13. Interesting Facts!
10% of the weight of living organisms is
hydrogen!
Liquid Hydrogen has the lowest density of all
liquid!
Hydrogen is the only element that can exist
without neutrons!
Believed to be one of 3 elements produced in the
Big Bang! (Others were helium and lithium)
Most abundant element in the universe!
We owe most of the energy on the planet to
hydrogen. The Sun's nuclear fires convert
