helium

     

Helium (He) is a colorless, oorless, tasteless, non-toxic, inert monatomic chemical element that heads the noble gas series in the periodic table and whose atomic number is 2. Its boiling and melting points are the lowest among the elements and it exists only as a gas except in extreme conditions.

Trivia about helium

  • This noble gas is ideal for balloons, as there is no fire risk
  • (The Mythbusters deliver the clue.) The idiom "going down like a lead balloon" implies that lead balloons can't fly but by constructing a balloon & filling it with enough of this inert gas, we achieved lift-off, myth busted!
  • Now employed in welding, this gas, He, has been used to lift balloons & dirigibles
  • Macy's claims to be the 2nd largest consumer of this gas in the U.S.; the U.S. gov't is 1st
  • The vast majority of this second-lightest gas comes from natural gas fields in the U.S.
  • It's the lightest of the noble gases
  • This 2nd lightest gas is used in balloons & in a breathing mixture for deep-sea divers
  • This element, symbol He, is the most difficult of all gases to liquefy
  • The Shenandoah, commissioned by the U.S. Navy in 1923, was its 1st Zeppelin-type airship filled with this gas
  • The U.S. Navy's ZR1, Shenandoah, was its first filled with this gas
  • One of the noble gases, it's the lightest of all gases after hydrogen
  • This element that makes up about 25% of the sun's mass was first discovered on the sun in 1868
  • Astronomer Pierre Janssen discovered this element while studying a solar eclipse
  • This gas was named for the Greek word for "sun" after it was discovered during an eclipse in 1868
  • The U.S. refused to sell this gas to the Zeppelin Aircraft Company, which used the more flammable hydrogen instead
  • Because sound travels 2.7 times faster in this gas than in air, inhaling it makes your voice higher
  • An atom of this No. 2 elment has an alpha particle as its nucleus
  • This inert gas alters your voice because sound travels more than twice as fast in it as in air
  • It's the second-lightest element
  • Most of the world's supply of this light gas comes from natural gas fields in the U.S.
  • Air-filled ballonets control how much this gas is allowed to expand in the envelope
  • When William Ramsay told of the discovery of this gas on Earth in 1895, we wonder if he used a squeaky voice
  • The name of this noble gas comes in part from the Greek for "sun"
  • In a kids' song "The sun is a mass of incandescent gas...where hydrogen is built into" this
  • The periodic table:4. Beryllium3. Lithium2. This element
  • First observed in the sun's atmosphere, it was named for the sun
  • This noble gas has 92% of hydrogen's lifting power even though it's twice as dense
  • Fly high with this colorless, odorless & tasteless gas, atomic no. 2
  • Hydrogen is the only chemical element that's lighter than this one
  • Of the noble gases, this one has the lowest atomic weight
  • The energy we call sunshine is initially generated by the Sun's fusion of hydrogen into this
  • This really light gas has the lowest boiling point of any element, -452 degrees Fahrenheit
  • It's the noble gas in use here
  • (Jon of the Clue Crew delivers the clue from the Macy's Parade Warehouse in Hoboken, New Jersey.) The Macy's Parade balloons are inflated with a mix of air & this gas; they used to be released after the parade but that was stopped for safety reasons
  • In 1978, 3 men set a record flight duration of 137 hours in The Double Eagle II balloon, which used this gas
  • The fact that it's the second most abundant gas supports the Big Bang, as stars haven't had time to make it all
  • In the Sun hydrogen gas is transformed by a series of atomic reactions into this other gas
  • Noble gas whose name is from the Greek word for "sun"
  • U.S. & Canada produce almost entire world supply of this lightest inert gas
  • It's the second chemical element listed on the periodic table
  • With 2 neutrons & 2 protons, an alpha particle is identical to the nucleus of an atom of this gas
  • Heike Kamerlingh Onnes discovered superconductivity & was the first to liquefy this light gas, in 1908
  • This 2nd-lightest gas is used in breathing mixtures for deep-sea divers to help them work at extreme depths
  • This gas, atomic No. 2, is used as a tracer in detecting leaks in gas lines
  • An empty Goodyear blimp weighs over 12,000 lbs.; when they fill it with this gas, it weighs only 100 to 200 pounds
  • Of the 6 noble gases on the periodic table, it is the lightest

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