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Stoichiometry and Moles
77
Stoichiometry and Moles—Laboratory Kits,
continued
Stoichiometry of the Self-Inflating
Balloon—Student Laboratory Kit
By: Kathleen Dombrink
McCluer North H.S., Florissant, MO
Capture your students’ attention by studying how a self-inflating balloon works! Your students will have fun investigating this novelty balloon, by using stoichiometry and the ideal gas law. Students then apply what they learn to make their very own self-inflating balloon. Additionally, students explore the concepts of limiting and excess reagents and acid- base chemistry. Have fun with this engaging lab experiment!
Complete for 30 students working in pairs.
Flinn’s Exploring ChemistryTM—Molar Relationships and Stoichiometry Package
See page 29.
Identifying an Unknown Metal Carbonate— Stoichiometry Guided-Inquiry Kit
How do chemists determine the identity of a compound?
In this stoichiometry, guided-inquiry lab, students use two different analytical techniques to identity and confirm an unknown Group 1 metal carbonate. In Part 1, students measure the loss in mass when they react their metal carbonate with acid to produce carbon dioxide gas and use the stoichiometry of the gas evolution reaction to identify and confirm the unknown sample. In Part 2, students titrate the metal carbonate with hydrochloric acid and again use the stoichiometry of the titration reaction to determine or confirm the moles of carbonate ion in the unknown. The level of student independence in this guided-inquiry lab can be modified to suit your level of instruction. Includes Instructor’s Notes with complete sample data, reproducible student handouts with background information, and all necessary chemicals and consumable supplies.
Complete for 30 students working in pairs.
Gravimetric Analysis of a Metal Carbonate— Classic General Chemistry Experiment
See page 22.
Leftover Aluminum Wire—
A Stoichiometry Super Value Kit
By: Jeff Bracken,
Westerville North H.S., Westerville, OH
Here is an impressive and affordable lab activity that gives consistent results in just a matter of minutes! Students perform a redox reaction between aluminum wire and a copper(II) salt. The progress of the reac- tion is followed by observing the disappearance of the green-blue copper color and the formation of solid copper on the wire. Using stoichiometric calculations, students predict the amount of aluminum that should react and compare this value to the actual amount of “leftover” aluminum. Reproducible student handouts are included, providing a detailed proce- dure, data table, guided calculations and question sheets. Also included is an alternate set of handouts that gives a higher level, open-ended laboratory option in which students design their own data tables and work independently through the calculations. Instructor’s Notes provide sample data, calculations, teaching tips and answers to questions.
Super Value Kit is complete for 5 classes of 30 students working in pairs.
Stoichiometry of the Self-Inflating Balloon— Student Laboratory Kit
AP8554
Catalog No.
Description
Price/Each
AP8554
Stoichiometry of the Self-Inflating Balloon— Student Laboratory Kit
$44.95
Catalog No.
Description
Price/Each
AP7247
Identifying an Unknown Metal Carbonate— Stoichiometry Guided-Inquiry Kit
$34.90
Identifying an Unknown Metal Carbonate— Stoichiometry Guided-Inquiry Kit AP7247
Leftover Aluminum Wire—
A Stoichiometry Super Value Kit AP4678
Catalog No.
Description
Price/Each
AP4678
Leftover Aluminum Wire—
A Stoichiometry Super Value Kit
$29.15
STOICHIOMETRY AND MOLES—LABORATORY KITS continued on next page.