I can go from solid to liquid to gas, all without changing my essence. What am I?
Category: Science · Difficulty: medium
Hint: You find me in rivers, clouds, and ice cubes.
Answer
H2O
Explanation
Water can exist in three states: solid (ice), liquid (water), and gas (steam), showcasing the concept of phase transitions.
This is a medium science riddle — a moderate challenge for most people. The answer is H2O.
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