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In this experiment, learners test multiple food items to see if they are an acid or base using an indicator solution created with red cabbage. Learners experiment with candy, fruit juice, milk, and any other edible items around your house they are curious about. Test items are separately added to a clear container with water before using an indicator to discover its pH level (pHs of less than 7 indicate acidity, whereas a pH of greater than 7 indicates a base). Activity includes step-by-step instructions with photos, an activity video explaining the experiment process in detail, background info, suggested questions for caregivers to ask learners, suggested extensions. Adult supervision required when using stovetop or kettle.
- 10 to 30 minutes
- 10 to 30 minutes
- $5 - $10 per group of students
- Ages 6 - 14
- Activity, Experiment/Lab Activity
- English
Quick Guide
Materials List (per group of students)
- Stove top-SAFETY WARNING
- Small head of red cabbage
- Grater (or knife)
- Two pots
- Water
- Strainer
- Small, clear cups/containers (1 for each item being tested)
- journal (to record results) or paper and pen
- Dropper or small spoon
- Three or more household items to test: fruit juice, vinegar, baking soda, candy, etc.
Subjects
-
Physical Sciences
-
Chemistry
- Acids and Bases
-
Chemistry
-
The Nature of Science
-
The Scientific Process
- Asking Questions
- Conducting Investigations
- Gathering Data
-
The Scientific Process
Informal Categories
- Food and Cooking
Other
Components that are part of this resource:
- Print Out Activity Guide
- Activity Video Demonstration- Candy Chemistry
- Related Resource- Teaching Children About Acids and Bases
This resource is part of:
Access Rights:
- Free access
By:
Source Collection
- Amazeum YOU
Rights:
- All rights reserved, Scott Family Amazeum, 2021