Meghan Porter (Indiana University) and Matt Cranswick (Colorado State University - Pueblo) lead the discussion in the 21st SLiThEr on lessons learned during the pandemic and how some of the on-line tools that they used and developed will continue to be used in their classes moving forward.
This activity is a guided approach to answering the following: "Give an example of a silver (Ag+) salt that is expected to be soluble in water." It requires students to consider both HSAB and Bronsted acid/base concepts when evaluating solubility.
I use the activity at the end of the unit on reactivity of ions in aqueous solutions, after we have gone over all of the relevant concepts, and the question (without scaffolding) is similar to what I might ask on an exam.
This activity is designed to give students practice with predicting the preferred direction of double displacement reactions using the hard-soft acid-base (HSAB) principle. It includes a question where students must determine the relative softness of two soft bases. This activity was used after the lecture where students were introduced to these concepts.
This activity is designed to serve two purposes. The first is to give students practice with assigning the acidity of cations (acidic or non-acidic) and the basicity of anions (basic, feebly basic, or non-basic). The second is to guide students to discover the general trends in solubility for combinations of Bronsted acids and bases. The thermodynamic underpinnings of these generalized "solubility rules" are taught in the subsequent lecture.
This is an in-class activity that I use in my advanced general chemistry course to teach students how to qualitatively assign oxo anions as non-basic, feebly basic, or basic. Being able to qualitatively make these assignments helps students when we get to predicting solubility of compounds using Bronsted acidity and basicity.
This is an in-class activity that I use in my advanced general chemistry course to teach students how to rank the relative acidity of monoatomic cations and how to qualitatively predict the strength of the interaction of these cations with water (hydration and hydrolysis).
This is an in-class activity that I use in my advanced general chemistry course right before I start teaching about the relationship between the Bronsted acidity of cations and their hydration/hydrolysis. This is the first topic in the course (reactions of ions in aqueous solution), and we would have just spent a lecture reviewing intermolecular forces.
A nanoCHAt conversation about ways that instructors can mentor students in the many-to-one environment of the classroom. Recorded by VIPEr Fellows Carmen Bustos-Works, Robin Macaluso, and Stephanie Poland with Shirley Lin (moderator) on May 25, 2021. The full nanoCHAt playlist can be accessed at https://www.youtube.com/playlist?list=PL2wnHWA8OaA5Y6pPaOk2zt6wwrd2HK6kP
A nanoCHAt conversation about ways that instructors can level the playing field for students coming into a course with a variety of academic backgrounds. Recorded by VIPEr Fellows James Dunne, Megan Lazorski, Rudy Luck, and Claude Mertzenich with Shirley Lin (moderator) on April 1, 2021. The full nanoCHAt playlist can be accessed at https://www.youtube.com/playlist?list=PL2wnHWA8OaA5Y6pPaOk2zt6wwrd2HK6kP
Sibrina Collins (Lawrence Tech) presented a SLiThEr on April 10, 2021. The topic was her recently releases ACS Symposium Series book entitled "African American Chemists: Academia, Industry, and Social Entrepreneurship". Sibrina presented on stories, both hearing them and telling them. She recounted how she used the VIPEr model of learning objects to make the stories in the book accessible for use in the classroom.