Your Safer Source for Science

Since 1977

Address P.O. Box 219 Batavia, IL 60510
Phone 800-452-1261
Fax 866-452-1436
Email flinn@flinnsci.com

Product 12584

By: Steve Spangler, Regis University, Denver, CO

The ROY G BIV Clock Reaction Kinetics Chemistry Demonstration Kit is a wonderful introduction to acid–base buffers. The visible spectrum has been displayed many ways, but never quite as spectacularly as this.

See more product details

Options:

(Select option to see volume pricing availability)

Product Details

The visible spectrum has been displayed many ways, but never quite as spectacularly as this! Take seven different dry chemical mixtures, and add each to a separate beaker. Pour a clear liquid into each beaker. In less than a minute, the large pH change at the end of this clock reaction causes a blooming of the seven rainbow colors. A wonderful introduction to acid–base buffers. Teacher Demonstration Notes included.

Concepts: Clock reactions, pH indicators, buffers.
Time Required: 15 minutes
Chemicals Provided: Formaldehyde solution, isopropanol solution and seven dry indicator mixtures.

Correlation to Next Generation Science Standards (NGSS)

Science & Engineering Practices

Developing and using models
Constructing explanations and designing solutions

Disciplinary Core Ideas

MS-PS1.B: Chemical Reactions
HS-PS1.B: Chemical Reactions

Crosscutting Concepts

Systems and system models
Stability and change

Performance Expectations

HS-PS1-2. Construct and revise an explanation for the outcome of a simple chemical reaction based on the outermost electron states of atoms, trends in the periodic table, and knowledge of the patterns of chemical properties.