Physical Science · Matter & Properties
Acids & Bases: Properties, Indicators & pH
Use safe indicator evidence to compare acidic, neutral, and basic solutions and interpret the pH scale without relying on taste or touch.
Lesson plan
Acids & Bases: Properties, Indicators & pH
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Lesson overview
What students will learn
- Use indicator color changes as evidence to classify safe solutions as acidic, neutral, or basic.
- Interpret pH values as a scale from acidic through neutral to basic.
Key science ideas
- Acids and bases can look similar, so scientists use tests rather than taste or touch.
- An indicator changes color depending on the solution's chemical conditions.
- On the pH scale, values below 7 are acidic, 7 is neutral, and values above 7 are basic.
Lesson at a glance
- Grade 5
- 50 min
- ~12 min prep
- 7 materials
What’s included
- Lesson Plan
- Investigation
- Teacher Slides
- Printable Worksheet
- Teacher Answer Key
- Interactive Activity
- Vocabulary