Acid-base indicators are an essential part of any chemistry classroom. Individuals explore the color-changing feature of the important indicators in a vibrant hands-on activity. Using serial dilution, learners create solutions ranging from 0 to 14 on the pH scale. They then test the pH and observe and make conclusions based on the results.

Concepts

acids, bases, indicators, ph, dilution

Show More Show Less

Additional Tags

science

Show More Show Less

Instructional Ideas

• Have pupils make a Venn diagram with the features of acids and bases to review prior to the activity

Classroom Considerations

• Ensure pupils have a solid understanding of the meaning of pH prior to the lesson
• Allow time to collect and prepare the necessary materials

Pros

• Includes a lab sheet describing the procedure and providing a table for data collection
• Uses several different pH testers to allow for a comparison

Cons

• None