Xplore ChemEd X

(e)Xplore ChemEd X published collections such as activities, articles, demonstrations, and assessment tools.

The Xplore area includes 'published' ChemEd X resources such as activities, articles, demonstrations, and assessment tools. The Search service is also in the Xplore area.

by Mary Saecker
Tue, 11/11/2014 - 12:07

Engaging and Sustaining Students' Interest in Chemistry The November 2014 issue of the Journal of Chemical Education is available online to subscribers at http://pubs.acs.org/toc/jceda8/91/11. The November issue content includes content on water chemistry, diversity and women in science, professional development, teaching with technology, electrochemistry, and more.

Recent activity: 4 months 3 weeks ago
by Dan Meyers
Tue, 11/11/2014 - 11:18

Last Thursday (11/6/14) I attended a workshop on NGSS through our local RESA (essentially an ISD for the county/region). I’d like to touch on some of the things I took away from this workshop and will post again after the next follow-up workshops in December and March.

Comments: 2
Recent activity: 4 months 3 weeks ago
by David Licata
Sat, 11/08/2014 - 21:40

This set of three worksheets are intended to be used as collaborative "Guided Instructional Activities" (GIAs). Two students cooperate to complete the steps of a stoichiometry problem, alternately doing parts of the process as they explain what they are doing and evaluate their partner's work.

Recent activity: 4 months 2 weeks ago
by David Licata
Fri, 11/07/2014 - 23:37

The three "Guided Instructional Activities" in this activity are three cooperative learning pieces in which students are guided through the process of converting from one unit to moles (or moles to a unit) by the method of "unit analysis" (dimensional analysis). Students alternate steps in the process and evaluate the success of each step.

Recent activity: 4 months 2 weeks ago
by David Licata
Wed, 11/05/2014 - 19:52

This worksheet asks students to do basic conversions of mass or molecules to moles and vice versa.

Recent activity: 4 months 2 weeks ago
by David Licata
Tue, 11/04/2014 - 20:09

This worksheet is intended to be used as a "Guided Instructional Activity" (GIA). It asks students to find the molar mass of selected elements and write the molar mass as two equivalent fractions ("conversion factors") and as an equality. It is designed to help develop good habits in representing molar mass and other conversion factors, and to emphasize the idea that a conversion factor has a numerator and denominator that "name" identical quantities using different measures.

Recent activity: 4 months 2 weeks ago
by David Licata
Mon, 11/03/2014 - 21:39

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.

Comments: 9
Recent activity: 4 months 2 weeks ago
by David Licata
Wed, 10/29/2014 - 21:41

Students combine sodium carbonate and hydrochloric acid generating carbon dioxide gas which is allowed to escape. They measure the actual yield of carbon dioxide produced (missing mass), calculate the theoretical yield using stoichiometry, and then the percent yield. Students understand that 100% yield is the most appropriate answer (based on the Law of Conservation of Mass), so after considering the meaning of significant figures and the uncertainty of their measurements they are asked to decide if they did (or did not) get an answer that might indicate the validity of the Law.

Recent activity: 4 months 2 weeks ago
by Mary Saecker
Tue, 10/28/2014 - 13:58

Communicating the Value of Chemistry The October 2014 issue of the Journal of Chemical Education is available online to subscribers [http://pubs.acs.org/toc/jceda8/91/10]. The October issue features sustainability; celebrating National Chemistry Week 2014 with articles on food and candy; increasing chemistry understanding for the nonscientist; nanochemistry; investigating materials: plastic & paper; exploring sound; research on chemical equilibrium instruction and student understanding of scale.

Recent activity: 4 months 3 weeks ago
by Mary Saecker
Tue, 10/28/2014 - 13:39

Advanced Placement Chemistry Special Issue The September 2014 issue of the Journal of Chemical Education is available online to subscribers [http://pubs.acs.org/toc/jceda8/91/9]. The September issue features a special issue of 20 contributions on Advanced Placement (AP) Chemistry as well as many other articles to help students learn chemistry.

Recent activity: 4 months 3 weeks ago