High School / Chemistry

What is pH?

Students use a pH sensor to test the pH of a set of serial dilutions and make a connection between the pH value (& pOH) of a solution and its hydrogen ion (& hydroxide ion) concentration.

Supports NGSS Performance Expectation HS-PS1-3: Plan and conduct an investigation to gather evidence to compare the structure of substances at the bulk scale to infer the strength of electrical forces between particles.


Student Files

16A_What_is_pH.docx 486.97 KB
16A_answer_sheet.docx 135.05 KB
16A_answer_sheet.pdf 154.34 KB
16A_What_is_pH.pdf 486.30 KB
16A_What_is_pH_Google_Slide.pdf 31.73 KB

Teacher Files

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Featured Equipment

pH Storage Solution

pH Storage Solution

A 500 mL bottle of storage solution for PASCO pH Electrodes.

pH Buffer Capsule Kit

pH Buffer Capsule Kit

Use this kit to create fresh solutions of known pH values (4, 7 & 10) for calibrating pH meters or other purposes.

pH Sensor

Wireless pH Sensor

Here’s the best tool for measuring pH since litmus paper. The Wireless pH Sensor connects via Bluetooth® to monitor the pH of solutions.

Many lab activities can be conducted with our Wireless, PASPORT, or even ScienceWorkshop sensors and equipment. For assistance with substituting compatible instruments, contact PASCO Technical Support. We're here to help.

Copyright Disclaimer: Section 107 of the Copyright Act of 1976 makes allowance for “fair use” for purposes of teaching, scholarship, education and research. Reproduction under any other circumstances, without the written consent of PASCO, is prohibited.
Source: Lab #16A

Essential Chemistry Teacher Lab Manual

What is pH?