Visual scaffold for stoichiometry

Submitted by Margaret Scheuermann / Western Washington University on Tue, 12/19/2017 - 22:18
Description

These five slides are intended to share a visual scaffolding that I developed to help my general chemistry students identify what calculations are needed to solve stoichiometry problems.

 

What is (not) inorganic chemistry?

Submitted by David Eichhorn / Wichita State University on Thu, 09/14/2017 - 10:08
Description

For twenty years, I have started my second-year Inorganic Chemistry class with a few PowerPoint slides illustrating the inorganic chemistry that is present in a number of societal areas. The point is to emphasize to the students that inorganic chemistry is present in all aspects of life. To make this process more interactive, I made "game pieces" with a topic on the front (e.g, photography or radiation protection or vitamin B12) and an area on the back (energy, materials, biology, medicine, or environment). As each student enters the class, they are asked to take one game piece.

Literature Discussion of "A stable compound of helium and sodium at high pressure"

Submitted by Nicole Crowder / University of Mary Washington on Sat, 06/03/2017 - 11:26
Description

This paper describes the synthesis of a stable compound of sodium and helium at very high pressures. The paper uses computational methods to predict likely compounds with helium, then describe a synthetic protocol to make the thermodynamically favored Na2He compound. The compound has a fluorite structure and is an electride with the delocalization of 2e- into the structure.

This paper would be appropriate after discussion of solid state structures and band theory.

The questions are divided into categories and have a wide range of levels.

Formulas and Nomenclature of Compounds

Submitted by Sarah Shaner / Southeast Missouri State University on Sun, 03/26/2017 - 12:41
Description

Students will be given the formula for a cation or anion on a slip of paper or index card. He or she will find another student with an ion with the opposite charge and practice writing the formula and naming the ionic compound that would result by combining the cation and anion. Students also answer a few questions about naming and formulas of binary molecular compounds with their partner.

In-class peer review

Submitted by Chantal Stieber / Cal Poly Pomona on Fri, 03/03/2017 - 17:15
Description

This activity includes questions for students to answer to help guide them through the process of peer review. It was designed to assist students in writing peer reviews for research reports written by their classmates, but could be applied to literature articles as well.

Experimenting with Danger- CSB safety Video

Submitted by Sheila Smith / University of Michigan- Dearborn on Thu, 03/02/2017 - 12:19
Description

This 2011 video by the Chemical Safety Board is a very serious and moving motivation for adopting safe practices in the chemical laboratory.  It focuses on two recent and very real safety issues in University labs (UCLA, 2008 and TTU, 2010 ), both of which have shaken the educational research community to result in positive change. 

I have shared a "SafeShare" link so that you will not have to listen to ads, and if you choose to play the link in your classroom, you will not see all the Youtube ads on the screen.  

calistry calculators

Submitted by Adam Johnson / Harvey Mudd College on Wed, 01/18/2017 - 18:17
Description

I just stumbled on this site while refreshing myself on the use of Slater's rules for calculating Zeff for electrons. There are a variety of calculators on there including some for visualizing lattice planes and diffraction, equilibrium, pH and pKa, equation balancing, Born-Landé, radioactive decay, wavelengths, electronegativities, Curie Law, solution preparation crystal field stabilization energy, and more.

I checked and it calculated Zeff correctly but I can't vouch for the accuracy of any of the other calculators. 

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