Chemical Reactions Lab Lesson: Red Cabbage Experiment ~ Acids, Bases & pH Scale

Discover how chemical reactions reveal whether a liquid is an acid or a base using red cabbage juice as a natural pH indicator. Here is a COMPLETE LESSON PLAN, with Worksheets and Answers for teachers to purchase...Included Topics are below:

Introduction to Acids, Bases, and pH

Learn about the pH scale, how it measures acidity and alkalinity, and how everyday substances like lemons and soap fit on this scale. Discover how red cabbage juice acts as a natural pH indicator by changing colors when mixed with acids or bases.

Reading Passage: “The Colorful World of Acids and Bases”

A short and engaging reading passage explains the pH scale and the role of red cabbage juice as an indicator. Students explore examples of acids, bases and neutrals, linking the science to real-world items.

Hands-On Experiment: Red Cabbage Lab

Step-by-step instructions guide students in creating pH indicator juice from red cabbage and testing various substances to observe the fascinating color changes caused by chemical reactions.

Worksheet and Observation Activities

Interactive tasks solidify learning, including filling out a pH color code chart, answering questions about observations, and completing true/false statements to reinforce understanding.

Wrap-Up Discussion

Reflect on the experiment by identifying acids and bases, discussing surprising results, and connecting the activity to everyday chemistry.

Our Recommendation

This lesson blends science and hands-on discovery to introduce young learners to the chemistry of acids and bases. 

Students will leave with a deeper understanding of chemical reactions and the confidence to explore science further.

Why This Resource Is a Must-Have

This engaging lab:

• Encourages curiosity and hands-on learning.

• Teaches core scientific concepts in a fun, approachable way.

• Reinforces understanding with structured observation and reflection.

• Offers ready-to-teach materials, saving preparation time for educators.

• A ready-to-use lesson plan that includes worksheets, activities and discussion prompts.

This resource provides a complete, fun-filled experience that fosters a love for science in young learners while making teachers’ lives easier.

This resource is designed to inspire curiosity and nurture young scientists while helping teachers simplify their planning.

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Resource Information:

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Ideal for Ages: Students in elementary school (only if they are ready for this type of publication). 7-8+

Teaching Duration: 1 class period, depending on the depth of exploration.

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