What is the noble gas with the symbol He, lighter than air, and makes a voice higher pitched when inhaled?

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Prepare for the JH Academic Bowl Test with flashcards and multiple choice questions, including hints and explanations. Elevate your confidence ahead of the exam!

Multiple Choice

What is the noble gas with the symbol He, lighter than air, and makes a voice higher pitched when inhaled?

Explanation:
The idea is to identify a noble gas by its symbol and its effect on voice when inhaled. Helium fits both parts: it is one of the noble gases and is represented by the symbol He. It’s much lighter than air, so when you breathe in helium, it displaces the air in your vocal tract. Sound travels faster in helium than in air, and because the speed of sound in the surrounding medium influences the resonant frequencies your vocal cords and throat produce, the result is a higher-pitched voice. Neon and argon are also noble gases, but they don’t carry the symbol He, and hydrogen isn’t a noble gas, so helium is the correct choice.

The idea is to identify a noble gas by its symbol and its effect on voice when inhaled. Helium fits both parts: it is one of the noble gases and is represented by the symbol He. It’s much lighter than air, so when you breathe in helium, it displaces the air in your vocal tract. Sound travels faster in helium than in air, and because the speed of sound in the surrounding medium influences the resonant frequencies your vocal cords and throat produce, the result is a higher-pitched voice. Neon and argon are also noble gases, but they don’t carry the symbol He, and hydrogen isn’t a noble gas, so helium is the correct choice.

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