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Product 12780

By: The Flinn Staff

In the Crystal Growing Rock Chemistry Laboratory Kit, students place a limestone rock in acetic acid and leave the contents undisturbed for a week. The result is a coral-like covering of calcium acetate crystals on exposed rock surface!

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Amazing! When a limestone rock is placed in a solution of acetic acid, beautiful popcorn-like crystals actually grow out of the rock. In this activity, students place a limestone rock in a weighing dish with acetic acid and allow the contents to sit undisturbed for a week. The result is a delicate, coral-like covering of white calcium acetate crystals on the exposed rock surface. Use this fun crystal-growing activity to teach students about chemical reactions and the properties of acids and bases. Includes student procedure and Teacher Notes, acetic acid solution, reusable limestone rocks and weighing dishes.

Complete for 30 students working in pairs.

Correlation to Next Generation Science Standards (NGSS)

Science & Engineering Practices

Planning and carrying out investigations

Disciplinary Core Ideas

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

Crosscutting Concepts

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.
HS-PS1-5: Apply scientific principles and evidence to provide an explanation about the effects of changing the temperature or concentration of the reacting particles on the rate at which a reaction occurs.