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hands-on learning

DAVID LICATA's picture

Stoichiometry Fireworks Lab Quiz

Mon, 11/03/2014 - 21:39 -- DAVID LICATA
Ignition of sugar and potassium chlorate produces purple flames and sparks.

Given the amount of one reactant, students must use stoichiometry to find the ideal amount of the second reagent to use to create purple fireworks. The teacher ignites each groups' fireworks. Ideal mixture create little or no ash. Student assignment sheet with directions (and different initial amounts) plus teacher information and sample answers are included. This is an exciting and engaging activity that can be used as a stoichiometry quiz.

Time required: 

With one balance per table (two groups), the calculations should take about 10 minutes, the measures another 10 minutes. Ideally, students should be prepared to deliver their mixture to the teacher within 20 minutes. In practice, many students will take longer, particularly if the formula for potassium chlorate is not given and students are not familiar enough with ionic nomenclature.

The teacher will need about one minute per group to announce the group's mixture, ignite it, and wait for student responses. So if there are 15 groups, the teacher should allow about 15 minutes to ignite all the mixtures.

Mary Saecker's picture

JCE 91.08—August 2014 Issue Highlights

Tue, 10/28/2014 - 13:18 -- Mary Saecker
Journal of Chemical Education August 2014 Cover

Using Models for Learning Chemistry
The August 2014 issue of the Journal of Chemical Education is now available online to subscribers at http://pubs.acs.org/toc/jceda8/91/8. The August issue contains content to spark thinking about models and how to foster meaningful learning in chemistry classrooms and improve student understanding.

Erica K. Jacobsen's picture

The Scent of a Chemistry Flashback

Thu, 10/16/2014 - 16:00 -- Erica K. Jacobsen
Marbling art project

You’ve heard the old saying, “A picture is worth a thousand words.” How many words for a smell? A single whiff of a familiar scent can whisk me back into the past. Wash my hands with Dove soap—I find myself standing in my grandmother’s house. Walk by someone wearing Eternity cologne—I’m back in high school with an old boyfriend. Spray out a foamy mound of Barbasol shaving cream—I’m standing at an exhibit booth talking about the Journal of Chemical Education (JCE). That was a fragrant flashback moment I had last month. As I followed my nose to the past, it led me to a solution for the present.

Deanna Cullen's picture

Chemistry At the Mall

Mon, 10/13/2014 - 17:24 -- Deanna Cullen
Supplies

My local chapter of the American Chemical Society sponsors an annual event at a local mall called “Chemistry at the Mall”. The event is in celebration of National Chemistry Week. This year’s theme is “The Sweet Side of Chemistry – Candy”. I advise an ACS ChemClub and we hosted a table at “Chemistry at the Mall”. Ten student members worked shifts from 11am – 4pm. This was a great way to get involved with my local chapter and meet some other members. My students had a great time providing outreach and introducing young children to chemistry.

Build a Boat Collaboration

Mon, 09/22/2014 - 18:05 -- Kristin Gregory
boat white boarding

I want to learn more about the modeling approach to teaching chemistry, but have not yet found the time to attend training. It seems like modeling would be the next logical step after the flipped classroom method of instruction that I have used for the last four years. My goal in using modeling is to continue to move from a teacher centered classroom to an environment wherein students take on true ownership of their own learning. As luck would have it, I met some experienced modelers at a Biennial Conference on Chemical Education 2014 (BCCE 2014) Birds-of-a-Feather lunchtime chat and got to pick the brain of Erica Posthuma-Adams, and others, regarding this instructional approach. Their passion for modeling was clear and their willingness to share effective strategies for building a classroom around modeling was most appreciated.

AACT: A Community for K–12 Teachers of Chemistry

Thu, 09/04/2014 - 14:28 -- Emily Bones
AACT

On September 2, the American Association of Chemistry Teachers (AACT) launched its official website, loaded with lots of resources and member benefits. If you visit teachchemistry.org, you will find many great tools that K–12 teachers of chemistry can use in their classrooms; the new online periodical, Chemistry Solutions; professional development opportunities; and a community for you, in addition to many other benefits.

Mary Saecker's picture

JCE 91.07—July 2014 Issue Highlights

Tue, 07/22/2014 - 12:47 -- Mary Saecker
Journal of Chemical Education July 2014 Cover

Passion for and Dedication to Chemistry and Education
The July 2014 issue of the Journal of Chemical Education is now available online to subscribers at http://pubs.acs.org/toc/jceda8/91/7. The July issue features a tribute to J. J. Lagowski, green chemistry principles, book recommendations for the summer, organic chemistry in action, computation chemistry experiments, resources for teaching fluorescence spectroscopy.

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