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The Supersaturation Flask Chemical Demonstration Kit is great for teaching solutions, solubility, and exothermic processes. After watching the demonstration, your students’ understanding of supersaturation will be “crystal clear.”

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Inspire your students’ curiosity about supersaturation, solutions, and crystals with this easy and engaging demonstration! Drop a seed crystal into a flask and watch the chain reaction as the supersaturated sodium acetate solution crystallizes and releases heat. This demonstration is great for teaching solutions, solubility, and exothermic processes. After watching the demonstration, your students’ understanding of supersaturation will be “crystal clear!” Concepts: Supersaturation, exothermic, crystallization. Time Required: 10 minutes Materials Provided: Sodium acetate, 250-mL Florence flask, and a rubber stopper.

Correlation to Next Generation Science Standards (NGSS)

Science & Engineering Practices

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

Disciplinary Core Ideas

MS-PS1.B: Chemical Reactions
MS-PS3.D: Energy in Chemical Processes and Everyday Life
HS-PS1.B: Chemical Reactions

Crosscutting Concepts

Energy and matter
Stability and change

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-PS3-4. Plan an investigation to determine the relationships among the energy transferred, the type of matter, the mass, and the change in the average kinetic energy of the particles as measured by the temperature of the sample.
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.