Invisible Ink
Source Institutions
-
Twin Cities Public Television
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In this simple chemistry activity (page 1 of PDF) about acids and bases, learners will mix a baking soda and water solution and use it to paint a message on a sheet of white paper. Once the paint has dried completely, learners reveal the secret message by painting over the entire sheet of paper with grape juice. Relates to the linked video, DragonflyTV: Colorblind Dogs.
- Under 5 minutes
- 45 to 60 minutes
- $5 - $10 per student
- Ages 8 - 14
- Activity, Experiment/Lab Activity
- English
Quick Guide
Materials List (per student)
- a piece of white paper
- an artist's paint brush
- baking soda
- water
- grape juice
Subjects
- Life Sciences
- Human Senses and Perception
- Vision
- Human Senses and Perception
- Physical Sciences
- Chemistry
- Acids and Bases
- Solutions
- Light and Optics
- Sunlight and Color
- Chemistry
- The Nature of Science
- The Scientific Process
- Asking Questions
- Conducting Investigations
- Formulating Explanations
- The Scientific Process
Informal Categories
- Arts and Crafts
- Food and Cooking
Audience
To use this activity, learners need to:
- see
- see color
- touch
Learning styles supported:
- Links STEM to other topics of interest such as arts and humanities
- Involves hands-on or lab activities
Culture, ethnicity, and gender
Girls
- Explicity developed for this group
- Highlights STEM opportunities for this group
- Identifies role models or mentors in STEM fields from this group
- Uses inclusive images of people from this group
Other
Components that are part of this resource:
This resource is part of:
Access Rights:
- Free access
By:
Source Collection:
- DragonflyTV
Rights:
- All Rights Reserved, Twin Cities Public Television, Inc., ©2005
Funding Source:
- National Science Foundation, 436260
