Goldenrod Paper Message – Sick Science! #059
The term goldenrod is typically used to describe a color of paper – golden yellow. However, our goldenrod paper contains a special dye that turns bright red when exposed to solutions that are basic, like ammonia water or washing soda. We’ll show you how to use this special color-changing paper to develop a hidden message and make dripping, bleeding paper… complete with your own handprint marked in “blood.” It’s a great acid/base lesson for the Halloween season.
Learn more at http://www.stevespanglerscience.com/experiment/goldenrod-paper-message
Want more experiments like this? Check out http://www.stevespanglerscience.com/product/naked-eggs-and-flying-potatoes
Sick Science™ is a trademark of Steve Spangler, inc.
© 2011 Steve Spangler Science all rights reserved
Berry pH Paper – Sick Science! #048
Chemistry Rocket – Sick Science! #085
Homemade Fake Blood – Halloween Science
Perfect Fake Blood – Easiest Recipe EVER – SICK Science! #230
How useful was this post?
Click on a star to rate it!
Average rating 0 / 5. Vote count: 0
No votes so far! Be the first to rate this post.
We are sorry that this post was not useful for you!
Let us improve this post!
Tell us how we can improve this post?
The hand of sauruman!!!
wax keep the ammonia away from the paper, also the ammonia evaporate!
Were can I get the water
AHA! i've caught you red handed!
Thats so cool
I like so much your videos, but I don't understand english. 🙁
if i cant find ammonia can i use my urine… its steril i swear lol
the ammonia isnt going to hurt your skin?
My guess would be a pH shift. Acid dyes in the paper react with the high aylkyline in the ammonia to shift the dye to red.
I already new it said boo
or you can use water colores.
Because its just a giant sheet of litmus paper and the ammonia is a base solution so it turns the paper red /pink