Final answer:
Mercury can exist as a liquid and a gas, transitioning when heated to its boiling point. All substances have the potential to exist in solid, liquid, or gas states.
Explanation:
Mercury can naturally exist as both a liquid and a gas.
When heated to its boiling point of 357°C, liquid mercury transitions into a gas state, as observed in videos displaying this process under specific pressure conditions.
All substances, including mercury, have the potential to exist in one of the three states of matter: solid, liquid, or gas.
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