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.
- Goldenrod Paper
- Cotton balls
- Ammonia-water solution (household ammonia from the grocery store)
- Candle or clear wax crayon