Chemistry / Unit 1 Chem 0008 short lesson, about 20 seconds
Hypothesis
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The idea
A hypothesis is a tentative, testable explanation for an observation, proposed before the supporting evidence is in hand.
In practice
"Plants near a sunny window grow faster because they get more light" is a hypothesis — testable, since an experiment could support or undercut it.
Where people slip
A hypothesis untestable by any conceivable experiment, such as "plants grow because they want to," is not scientific.
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