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Product 12743

By: The Flinn Staff

With the Recycling Aluminum—Synthesis of Alum Chemistry Laboratory Kit, students perform a multi-step chemical reaction with aluminum foil. Students use dissolution, crystallization and filtering techniques to produce solid alum.

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Produce something new—synthesize! Aluminum potassium sulfate (alum) is used for many different purposes—from pickling foods to aftershave for men. Students perform a multi-step chemical reaction starting with a common household ingredient—aluminum foil. Add potassium hydroxide, sulfuric acid, water and the techniques of dissolution, crystallization and filtering to produce solid alum. Students also calculate percent yield and perform a post-lab cost analysis.

Complete for 30 students working in pairs. Apparatus for gravity filtration and a full aspirator filtration assembly is required and available separately. Perform this experiment in a fume hood or well-ventilated lab.

Correlation to Next Generation Science Standards (NGSS)

Science & Engineering Practices

Analyzing and interpreting data

Disciplinary Core Ideas

MS-PS1.A: Structure and Properties of Matter
MS-PS1.B: Chemical Reactions
MS-ESS3.A: Natural Resources
MS-ETS1.B: Developing Possible Solutions
HS-PS1.A: Structure and Properties of Matter
HS-PS1.B: Chemical Reactions
HS-ESS3.A: Natural Resources
HS-ETS1.A: Defining and Delimiting Engineering Problems

Crosscutting Concepts

Structure and function

Performance Expectations

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.