I exist in different forms but never change my core. I can be a gas, a liquid, or a solid. What am I?
Category: Science · Difficulty: expert
Hint: Consider the states of matter.
Answer
Water (H2O)
Explanation
Water can exist as ice (solid), liquid water, or steam (gas) without changing its molecular structure.
This is a expert science riddle — one of the harder riddles here. The answer is Water (H2O).
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