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In this activity on page 3 of the PDF, learners discover how science and Halloween are fun companions as they make paper bleed. Learners use an ammonia solution to make a "bloody" handprint on Goldenrod paper. Learners can also experiment with different acids, to see which ones can return the paper to its original yellow color.
- Under 5 minutes
- 5 to 10 minutes
- $10 - $20 per group of students
- Ages 6 - 14
- Activity
- English
Quick Guide
Materials List (per group of students)
- Goldenrod color-changing paper
- Ammonia
- Sodium carbonate (washing soda)
- Cotton balls
- A spray bottle
- A bowl
- Water
Subjects
-
Physical Sciences
-
Chemistry
- Chemical Reactions
- Acids and Bases
- Solutions
-
Chemistry
Informal Categories
- Arts and Crafts
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
Other
This resource is part of:
Access Rights:
- Free access
By:
- Van Gemert, Lisa
Rights:
- All rights reserved, Mensa Education & Research Foundation, 2011