Innovating Science® - Thermochromism

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Chemical products can only be purchased by Corporations and Educational Institutions. Private Individuals are not eligible.

Manufacturer ID - IS8019

Students will learn about acids and bases through a class discussion and then test a dilute acid and dilute base with neutral litmus paper to learn how the paper indicates something is acidic or basic. Once that skill is learned they can move on to test some common items that would be found around their house to determine if they are acids or bases. Optional: Extra litmus paper is included to test more items either from home or around the school building for a greater understanding of acids and bases. The activity contains enough materials for 6 groups of students.

Safety Data Sheet


The way in which light is absorbed or reflected by a crystalline material is determined by the structure of the crystal. This crystal structure can be changed by the application of heat. In some cases this change is reversible and the original structure, and therefore the original color, returns upon cooling. Two compounds are formed when metal salts are reacted with the [HgI4]2- Ion. Each compound is heated on a hot plate and a change in color is noted. The initial color of the compound returns upon cooling.

Kit Includes:
3 x 25g Mercury (II) Chloride
3 x 25g Potassium Iodide
1 x 15g Silver Nitrate
2 x 25g Copper (II) Chloride, Anhydrous

DOT Info:
Small quantity exemption 173.4
THIS PACKAGE CONFORMS TO 49 CFR 173.4 for domestic highway or rail transport only

WARNING: This product can expose you to chemicals including Mercury/mercury compounds, which are known to the State of California to cause reproductive harm. For more information go

Brand Name
Innovating Science®
Performance Expectations 5-PS1-3
Cross Cutting Concepts Cause and Effect
Scale, Proportion, and Quantity
Engineering Practices Planning and Carrying Out Investigations
Box Used 12663SBOX
Width (in) 6.25
Height (in) 4
Weight (oz) 19.9
Weight (lb) 1.24
Country of Origin US
Harmonization Code 9023.00.0000
DOT Description Non regulated

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