HydrogenBy

Jason Pynnonen

Important Terms

• Hydro=Water• Genes=Generator• Pauling Scale(electronegativity)• Protium• Deuterium (AKA Heavy Hydrogen)• Tritium

Basic Information

• Atomic Number- 1.• Atomic Weight- 1.00794• Makes up about 75% of the universe’s

elemental mass.• Nonmetal.• Oxidation Numbers- (-1, 1)

Hydrogen - Wikipedia, the free encyclopedia

Physical Properties

• Phase of matter- Gas• Specific Heat Capacity- (25 degrees Celsius)• Boiling point- (-423.17 Fahrenheit)• Melting point- (-434.45 Fahrenheit)

http://genchem.chem.wisc.edu/lab/PTL/ptl/Elements/H/H_Phys.html

Who/When/Where?• Henry Cavendish• 1766• London, England

www.Webelements.com

How Was it discovered?

• Cavendish collected it after he created a reaction between Mercury and some acids.

• Hydro=Water

• Genes=Generator

Reactivity

• Very Reactive• 3 Natural Isotopes– Protium– Deuterium (AKA Heavy Hydrogen)– Tritium

http://science.jrank.org/pages/3455/Hydrogen-Reactions-hydrogen.html

Important Compounds

• H2O

• NH3

• H2O2

Everyday Uses of Hydrogen and its Compounds

• Water• Ammonia• Hydrogen Peroxide• Propane• Methane

Characteristics

• Colorless• Odorless• Electronegativity(pauling scale) –(2.18)• Structural shape- Hexagonal• Very dangerous in some reactions with

oxidants.

Advanced Hydrogen Uses

• Hydrogen Cars– Ford Fusion Hydrogen 999 Fuel Cell Race Car

• Blimps and Zepplins– Hindenburg accident

Quiz Questions

• 1. What does Genes mean in English?• 2. What is the atomic weight I gave for Hydrogen?• 3. What is the specific heat capacity for Hydrogen?• 4. Who discovered Hydrogen?• 5. When and where did he discover it?• 6. What are the names of 2 of the 3 isotopes?• 7. According to the chart I showed, what is the most

reactive with hydrogen?• 8. What is the most important compound?• 9. What is hydrogens rating on the pauling scale?• 10. How fast did the fastest hydrogen car go?

Works Cited• Hydrogen - Wikipedia, the free encyclopedia• http://genchem.chem.wisc.edu/lab/PTL/ptl/Elements/H/H_Phys.html• www.Webelements.com• http://science.jrank.org/pages/3455/Hydrogen-Reactions-hydrogen.html• http://www.flatrock.org.nz/topics/flying/assets/hindenburg.jpg• http://www.autospectator.com/uploads/Ford/Other/FusionSide_999.jpg• https://engineering.purdue.edu/GEP/Spotlights/WaterInitiative/water• http://www.americanaquariumproducts.com/images/graphics/

ammonia.jpg