1. The name hydrogen comes from the Greek Words
hydro and genes, meaning “water forming.” Hydrogen
was detected in England in 1766 by Henry Cavendish
as a new gas. A person named A. L. Lavoisier in 1783
named it "hydrogen".

2. HYDROGEN
On The Periodic Table
Chemical symbol H
Average atomic mass 1.00794
Atomic number 1
Protons 1
Neutrons 0
Group on the periodic table 1
 The origins of hydrogen in nature
 In oil and natural gas
 In Earth's Crust
 In Earth's Ocean
 In Human Body
 It is prepared industrially by two processes-Both reactions require high temperatures
 the "water gas reaction" using coke and water
 the steam reforming process using natural gas and water

3. ELEMENTS WITH SIMULAR PROPERTIES AS HYDROGEN
Lithium: the lightest metal in the world. Used for aircrafts and batteries. Highest specific heat of any
known element, valuable for heat transfer.
Sodium: also known as table salt when combined with chloride. Pure sodium is not found naturally, it has
a violent reaction with water; vapors are used to create yellow lights; in liquid can be uses as a coolant; Is
used to cool down nuclear reactors.
Potassium: Combinations of this element is found all over the Earth, but not in its pure state. A metal the
human body uses as a vitamin; when combined with hydrogen creates a highly flammable gas.
Rubidium: A side effect in the creation of lithium. Easily ionized, used for developing photocells; not
completely understood.
COMPOUNDS HYDROGEN CAN FORM
Hydrochloric acid (HCl): a strong, highly corrosive acid, naturally found in the stomach, aids in digestion;
Used in chemical research laboratories, manufacturing plants, vinyl chloride (PVC), metal rust and scale
removal, petroleum production, ore processing. laboratory
Water (H2O): Most abundant element on earth. Molecules contains one oxygen and two hydrogen
atoms that are connected by covalent bonds; solid state, ice; and gaseous state, steam (water vapor).
Sulfuric acid (H2SO4): a strong acid, colorless viscous corrosive oily liquid, produced by dissolving
sulphur trioxide in water. Used in oil refining, wastewater processing, lead-acid batteries, cleaning agents.
Methane (CH4): a colorless, odorless, non-toxic and flammable gas . Produced by the breakdown of
plant materials in landfills, swamps and marshes; a greenhouse gas that contributes to global warming.
Ethanol (C2H5OH): A clear, colorless, and flammable oxygenated hydrocarbon; consumed as alcoholic
beverages ; used as octane enhancer or alternative automotive fuel; produced by the natural process of
fermenting grapes, malt, sugar cane juice, corn; can cause poisoning;

4. Hydrogen
 Common uses for hydrogen
 Ammonia for agricultural fertilizer and household cleaning products, plastics additives,
hydrogenated fats and oils, and rocket fuel
 Aid in welding and reducing metallic ores
 Used in methanol production, the H-bomb
 Hydrogen and Fuel Cells
 Use in Weather Balloons
 Thermolysis and Electrolysis
 Interesting fact about hydrogen
 Hydrogen is the most abundant element in the universe.
 Hydrogen is commonly used in hardening of oils and fats by hydrogenation.
 Nearly all of this hydrogen is used by industry in refining, treating metals, and processing foods.
 (NASA) is the primary user of hydrogen as an energy fuel; liquid hydrogen fuel lifts the space
shuttle into orbit. Hydrogen batteries—fuel cells—power the shuttle’s electrical systems. The
only by-product is pure water, which the crew uses as drinking water.
Hydrogen’s Closest Neighbors
Name: Helium Atomic number: 2
Symbol: He Atomic weight: 4.002602
Name: Ununoctium Atomic number 118
Symbol: Uuo Atomic weight 294