I can bubble and fizz, turning from solid to liquid with just a few degrees. What am I?
Category: Science · Difficulty: hard
Hint: Think about a substance used for cooling that sublimates.
Answer
Frozen carbon dioxide
Explanation
Dry ice (solid CO2) sublimates at room temperature, producing a fog-like effect.
This is a hard science riddle — a tricky one that takes a little thought. The answer is Frozen carbon dioxide.
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