Uploaded October 2014 | Updated September 2026, 2 weeks ago

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True goldenrod paper is made from a dye which is an acid-base indicator. This paper turns bright red in bases such as ammonia, baking soda or washing soda and returns to bright yellow in acids such as vinegar or lemon juice. Until now, it has been almost impossible to find. Fortunately, we found it for you. Available at teachersource.com/product/color-changing-goldenrod-paper/chemistry-ph