Examlex
Design a research study to test the hypothesis that having recess during the school day will promote better academic achievement. Be sure to describe the sample, measures and methods, and research designs.
pH
A numerical scale ranging from 0 to 14 that determines the level of acidity or alkalinity in water-based solutions.
pH
A measure of the acidity or alkalinity of a solution, quantified on a scale where 7 is neutral, values less than 7 are acidic, and values greater than 7 are alkaline.
Acidic
Describes a substance with a pH less than 7, indicating a higher concentration of hydrogen ions.
pH
A numeric scale used to specify the acidity or basicity of an aqueous solution, with values ranging from 0 (acidic) to 14 (basic).
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