Helium – the coolest element! Ann Lohrand Period 3.

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Presentation transcript:

Helium – the coolest element! Ann Lohrand Period 3

The Basics Symbol He Atomic # 2 Non metal Gas Melting point C Boiling point C

When, where, how? 1868 Pierre Janssen Observing the sun with a spectroscope he found a new element He named it Helium after the Greek for helios meaning sun

Practical Uses Air ships – Fuji blimp Space shuttle – cools fuels

More Uses 80% He + 20% O - no bends!! Keeps body scanners cool.

What’s special about Helium It is so light it floats! Changes your voice to sound like Mickey Mouse. No known health hazards.

RESOURCES Resources Frank C. Andrews, "Helium," World Book Online Americas Edition, a/ar/co/ar htm, August 27, Bentor, Yinon. Chemical Element.com - Helium. Aug. 27, 2002.