Goldenrod Color-Changing Paper Dip this paper in acids and bases and watch the brilliant color effect. email to friend
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This paper turns bright red when dipped in bases such as ammonia and washing soda, and turns back to its normal color when you dip it in acids such as vinegar or lemon juice.

How does it work?

True goldenrod paper is coated with a dye that acts as an acid-base indicator. In fact it's the world's largest acid/base indicator strip and can be used for lots of science experiments!

What does it teach?

Learn about the difference between acid and alkaline substances by testing them on the paper.

Experiment

Paint pictures on your goldenrod paper with vinegar first, and then paint with a baking soda solution. The pictures appear in different colors when the chemical reaction takes place! Be creative with your chemistry!