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Product 12603

By: Marie Sherman and Dr. Deborah Weil , Ursuline Academy, St. Louis, MO

The Reversible Orange and Blue Reaction Oxidation–Reduction Chemical Demonstration Kit is an activity that will peak students’ interest. The Walker quarry soil is contaminated. Students will perform tests on samples to solve the mystery.

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Astonishing, fascinating, amazing and incredible are just a few words to describe this easy-to-do demonstration. A warm, clear, blue solution starts to bubble, the temperature rises, the bubbling becomes vigorous and suddenly the solution becomes an opaque orange-gold color. Since the reaction is reversible, you can repeat it several times by replenishing one of the reactants. An eye-catching way to introduce redox reactions to your students—especially great if your school colors are blue and orange (or gold). Teacher Demonstration Notes included.  

Concepts: Oxidation–reduction, complex ions.
Time Required: 25 minutes


Correlation to Next Generation Science Standards (NGSS)

Science & Engineering Practices

Asking questions and defining problems
Developing and using models
Planning and carrying out investigations
Engaging in argument from evidence
Obtaining, evaluation, and communicating information

Disciplinary Core Ideas

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

Crosscutting Concepts

Patterns
Stability and change
Energy and matter
Cause and effect
Systems and system models

Performance Expectations

MS-PS1-2. Analyze and interpret data on the properties of substances before and after the substances interact to determine if a chemical reaction has occurred.
MS-PS1-4. Develop a model that predicts and describes changes in particle motion, temperature, and state of a pure substance when thermal energy is added or removed.
MS-PS1-6. Undertake a design project to construct, test, and modify a device that either releases or absorbs thermal energy by chemical processes.
HS-PS1-1. Use the periodic table as a model to predict the relative properties of elements based on the patterns of electrons in the outermost energy level of atoms.