I’m the lightest of them all, yet without me, balloons won’t fly. What am I?
Category: Science · Difficulty: medium
Hint: I’m often found at parties, making your voice squeaky.
Answer
Gas that lifts
Explanation
Helium is lighter than air and is used in balloons; it also causes a change in voice pitch when inhaled.
This is a medium science riddle — a moderate challenge for most people. The answer is Gas that lifts.
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