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With the Fantastic Four-Color Oscillator Chemical Demonstration Kit, students won’t believe their eyes as they watch this oscillating reaction. Simply pour solutions together and watch the solution flash green, blue, purple and red.

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Students won’t believe their eyes as they watch this amazing oscillating reaction! Simply measure out and pour together four solutions, wait about 10 seconds, and observe the solution flash to green and then to blue and to purple and to red. And if that’s not enough—this four-color cycle will repeat itself for well over an hour! Teacher Demonstration Notes included.

Concepts: Oscillating reactions, equilibrium.
Time Required: 20 minutes to 1 hour

Correlation to Next Generation Science Standards (NGSS)

Science & Engineering Practices

Developing and using models
Constructing explanations and designing solutions

Disciplinary Core Ideas

MS-PS1.A: Structure and Properties of Matter
MS-PS1.B: Chemical Reactions
MS-PS2.B: Types of Interactions
HS-PS1.A: Structure and Properties of Matter
HS-PS1.B: Chemical Reactions
HS-PS2.B: Types of Interactions

Crosscutting Concepts

Cause and effect
Patterns
Energy and matter
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.
HS-PS1-3: Plan and conduct an investigation to gather evidence to compare the structure of substances at the bulk scale to infer the strength of electrical forces between particles.
HS-PS1-6: Refine the design of a chemical system by specifying a change in conditions that would produce increased amounts of products at equilibrium.