Measuring pH levels

Measuring pH levels

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Credit: MARTYN F. CHILLMAID/SCIENCE PHOTO LIBRARY

Caption: MODEL RELEASED. Measuring pH levels. Schoolgirl using a pH meter to measure the acidity of a liquid in a conical flask. Acidity and pH is a measure of the concentration of hydrogen ions in a liquid.

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Keywords: acid, acidic, acidity, adolescent, alkaline, asian, base, basic, chemical, chemistry, child, class, classroom, concentration, conical flask, demonstration, education, educational, experiment, experimenting, female, girl, human, hydrogen ion, ions, laboratory, learning, lesson, people, person, ph meter, pupil, school, school science, schoolchild, south asian, student, teenager, youth

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