Acids and Bases Micro Lab

Getting to Know the pH Scale

The pH scale can be a confusing topic for students. Negative logarithms? Activities of ions? Proton donor, proton acceptor? What does it all mean!?

Having a fundamental 'feel' for the pH scale can clear up that sense of confusion and our micro lab is here to help! In this mini-activity your students will test the pH of everyday liquids. We've put together a simple list of 5 common liquids to keep it short and sweet.

  • Saliva
  • Lemon Juice
  • Mouthwash
  • Dishwashing Liquid
  • Tap Water

The activity is designed to take 10-15 minutes and serve as a reinforcement for your discussion. You can easily expand this into a full lab by adding a few more liquids and a few in-depth questions.

The activity and key are available below.

Acids and Bases Micro Lab - Word and pdf

Acids and Bases Micro Lab Key - Word and pdf