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A LITTLE SOMETHING WORTH KNOWING

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ScienceOne small ahaChemistry concept

Three oxygen atoms make this molecule, which absorbs ultraviolet light high in the atmosphere.

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Your new ahaOzone

Ozone: Gas layer high in the atmosphere that blocks ultraviolet light. Source: Ozone ↗

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  3. 14This logarithmic scale expresses acidity using hydrogen-ion activity.RECALL