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Introduction to pH Measurement

Kit #80

This series of simple, highly visual lab activities introduce students to the concept of pH. Students add drops of acid and base to a variety of pH indicators and observe how pH indicators can detect and differentiate acids and bases. Students are also introduced to the concept that acid and base discussions are not limited to chemistry but also extend to applications in biology and the study of the human body.

Details at a Glance

  • 1-2 Days | 1-2 ~50 minute class periods
  • 1 Activity
  • Accommodates 5 classes, each with 12 groups of 3 students
  • Consumables service 180 students
  • Includes digital resources

Complete Kit Equipment Package

Introduction to pH Measurement

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Scientific Concepts

•pH indicators can detect and differentiate acids and bases.
•The pH scale is a method of measuring the relative strength of acids and bases.
•pH is an important factor in many biological processes.
KEY VOCABULARY: acid/acidic, hydrogen ion, indicator, pH scale, base/basic (alkaline), hydroxide ion, neutral

Guides & Student Sheets

Our kits and modules provide you with everything you need so you can open, review, and teach the material confidently the next day.

  • Full downloadable Teacher Guide with background information, detailed instruction, example data and answers
  • Downloadable Student Sheets with age appropriate background information, full procedure(s), and analysis questions
  • All materials necessary to carry out the investigation
  • Safety Data Sheets

Kit Components

  • 12 Chemplates® w/stir stick
  • 1 Hydrochloric acid, Drop control bottle
  • 1 Sodium hydroxide, Drop control bottle
  • 1 Bromthymol blue , Drop control bottle
  • 1 Phenol red, Drop control bottle
  • 1 Phenolphthalein, Drop control bottle
  • 1 Blue litmus paper, Vial
  • 1 Red litmus paper, Vial
  • 1 Universal indicator paper, Vial
  • 50 Student Guides
  • 1 Teacher’s Guide with MSDS
  • Not included and needed for instruction: Eyewear.

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