Noble Gases

What are they

• Helium (He)
• Neon (Ne)
• Argon (Ar)
• Krypton (Kr)
• Xenon (Xe)

Neon glows bright red when electricity goes through it. Helium makes your voice sound funny if you inhale it.
Helium is also used to inflate the tires of large aircraft.

In the real world!
Fluorescent lights, balloons, neon light signs, cameras, weather balloons, SCUBA tanks

Helium

Colorless, odorless and no texture

Helium

• Atomic Mass 4.00
• Atomic Number 2
• Density is 0.179 kg/m3, it would float in water
• Nonmetal

In the real world

• They put helium in airplane tires because it is not very heavy.
• They use helium in hot air balloons to lift them off the ground.
• They mix helium with oxygen in SCUBA tanks to dilute it so you can dive longer.

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• It is the second most common element in the universe.
• It is so light that Earth's gravity can't hold on to it.
• When the temprature gets to absolute zero helium turns to a liquid.

Historical Facts

• Helium was found on the Sun before it was found on Earth.
• You could first buy Helium in 1928.

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