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In this activity, learners perform an experiment to find out what determines a flower's color. Learners extract petal juice, use acid and base indicators, and observe chemical reactions to investigate how the amount of acid or base influences the color of a flower petal.
- 5 to 10 minutes
- 45 to 60 minutes
- $10 - $20 per group of students
- Ages 11 - 14
- Activity, Experiment/Lab Activity, Lesson/Lesson Plan
- English
Quick Guide
Materials List (per group of students)
- Red, blue and purple flowers with large petals
- Ziploc bags
- Hammers
- Water
- Clear plastic cups
- Teaspoons
- Empty white Styrofoam egg cartons
- Droppers
- Bottle of vinegar
- Baking soda
Subjects
-
Life Sciences
- Cells
-
Diversity of Life
- Plants
-
Physical Sciences
-
Chemistry
- Chemical Reactions
- Acids and Bases
- Solutions
-
Vibration and Waves
- Light and Optics
-
Light and Optics
- Sunlight and Color
-
States of Matter
- Gases
-
Structure and Properties of Matter
- Elements and Periodic Table
-
Chemistry
-
The Nature of Science
-
The Scientific Process
- Conducting Investigations
- Formulating Explanations
-
The Scientific Process
Informal Categories
- Gardening
- Nature and Environment
Audience
To use this activity, learners need to:
- see
- see color
- touch
Learning styles supported:
- Involves hands-on or lab activities
Other
Includes alignment to state and/or national standards:
This resource is part of:
Access Rights:
- Free access
By:
- Education, Science Friday
Rights:
- All rights reserved, Science Friday, 2010