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Your Safer Source for Science
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Item #: PF2038 

Price: $35.00

In this lab experience, students perform a series of exercises to conceptualize just how big a chemical “mole” is and then they carry out an investigation that highlights why the “counting by weighing” method enabled by the mole is so important when working on very small scales. Students come to understand the mole’s utility as a counting number and come to understand just how small the atomic scale is. Also, students are able to apply empirical error analyses to self-developed procedures.

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Safety: Before conducting the lab, discuss any safety precautions that are specific to your science laboratory or classroom. Remind students to wash hands prior to leaving the lab.

Materials Included in Kit

Aluminum foil, roll

Navy beans, dry, 2 lbs
Rice, dry, 2 lbs