The more scientists examine H2O, the stranger it starts to seem. Water bends all the rules - but if it didn't, ice would sink and firefighters hoses would be useless'.
Water is the only substance on Earth whose chemical formula has entered the vernacular. We all know H2O, even if we don't understand precisely what it means. But if it sounds simple, the reality is different. This common, seemingly boring substance baffles and confuses anyone who peers at it for long enough.
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