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FlinnPREP™ Inquiry Labs for AP® Chemistry: Gravimetric Analysis of Calcium and Hard Water

By: The Flinn Staff

Gravimetric Analysis: Calcium & Hard Water Advanced Inquiry Lab Kit for AP* Chemistry
gravity filtration, filtration, vacuum of gravity filtration, quantitative transfer
otc, over the counter, gravimetric
Gravimetric Analysis: Calcium & Hard Water Advanced Inquiry Lab Kit for AP* Chemistry
Gravimetric Analysis: Calcium & Hard Water Advanced Inquiry Lab Kit for AP* Chemistry
gravity filtration, filtration, vacuum of gravity filtration, quantitative transfer
otc, over the counter, gravimetric
Gravimetric Analysis: Calcium & Hard Water Advanced Inquiry Lab Kit for AP* Chemistry
The Gravimetric Analysis: Calcium and Hard Water Inquiry Lab Solution for AP® Chemistry gives students the opportunity to investigate water samples to determine the accuracy and delicacy of gravimetric analysis for water hardness testing.

Includes access to exclusive FlinnPREP™ digital content to combine the benefits of classroom, laboratory and digital learning. Each blended learning lab solution includes prelab videos about concepts, techniques and procedures, summary videos that relate the experiment to the AP® exam, built-in student lab safety training with assessments, and standards-based, tested inquiry labs with real sample data. FlinnPREP™ Inquiry Lab Solutions are adaptable to you and how you teach with multiple ways to access and run your AP® labs.

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Big Idea 1, Investigation 3, Primary Learning Objective 1.19

Students investigate six water samples, representing a wide range of potential water hardness, from 50 ppm to 500 ppm, to determine the accuracy and sensitivity of gravimetric analysis for water hardness testing.

The lab begins with an introductory activity to develop skill in the calculations and techniques of gravimetric analysis, in particular, quantitative transfer and vacuum of gravity filtration. The procedure provides a model for guided-inquiry design of the cooperative class investigation. Antacid tablets are also provided as an opportunity for further inquiry—the use of the gravimetric analysis to determine the amount of calcium in an over-the-counter medication.

Complete for 24 students working in pairs.