Activities

ChemEd X activities are student-centered resources intended to aid learning chemistry topics.

ChemEd X emphasizes inquiry-based activities where students pose questions (with direction from the teacher) and then attempt to discover the answers through scientific inquiry.

Mole Conversion Guided Instructional Activity Preview
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: 10 months 2 weeks ago
Screenshot of a portion of the worksheet
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. The worksheet requires students to complete their work in a particular format and to inlcude number, unit, and chemical identity for each item in the "given," in each conversion factor, and in the answer.

Recent activity: 10 months 2 weeks ago
Finding and Writing Molar Mass Screenshot
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. In each representation, students are forced to give the numeral of the measure, unit, and identity of the chemical.

Recent activity: 10 months 2 weeks ago
Ignition of sugar and potassium chlorate produces purple flames and sparks.
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: 14
Recent activity: 10 months 2 weeks ago
Sodium carbonate reacts with hydrochloric acid producing bubbles
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: 5 months 6 days ago
by Shelly Belleau
Mon, 07/14/2014 - 17:43

Although many students have been exposed to the concept of density before reaching my Chemistry class, I always start the year with this POGIL-like activity.

Recent activity: 10 months 2 weeks ago
candy
by Deanna Cullen
Tue, 04/29/2014 - 17:23

Endothermic and exothermic reactions and processes are a common topic in chemistry class. This activity provides examples that can be done with household materials.

Recent activity: 10 months 2 weeks ago
ice cream ingredients
by Deanna Cullen
Mon, 04/28/2014 - 13:10

A quick google search will allow you to find many laboratory activities for making ice cream in chemistry class. Some of the links provide questions to incorporate into the activity. I have used several over the years and will share my modified version here.

Recent activity: 10 months 2 weeks ago
by Michael A. Morgan
Thu, 03/20/2014 - 13:55

An independent study on the chemistry topic of coordination compounds and complex ions suitable for AP Chemistry and first-year college chemistry students is presented. This student activity accompanies the article "A guided group inquiry lesson on coordination compounds and complex ions" and is suitable for use by the student to guide their activity.

Recent activity: 10 months 2 weeks ago
preview complex ions lab
by Michael A. Morgan
Wed, 03/19/2014 - 13:43

This laboratory exercise accompanies the article "A guided group inquiry lesson on coordination compounds and complex ions". The laboratory serves as part of an extended exercise on the chemistry topic of coordination compounds and complex ions. The entire lesson as described in the article also exposes students to how chemical research is conducted and the conflicts and uncertainties that lead to new theories and discoveries.

Recent activity: 10 months 2 weeks ago