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Teacher screamed real loud at class,
What is Helium?
Helium is a colorless odorless gas that has an atomic number of 2.
It is the second lightest element and also the second most abundant in the universe (after hydrogen).
Because it is lighter than air, and inflammable (unlike quick to burn hydrogen) it is currently used in balloons and airships to give them lift.
Helium is used as a coolant for super conducting magnets- especially those found in MRI machines.
When helium is inhaled, it temporarily raises the pitch of your voice.