Articles

ChemEd X articles address topics in chemical education ranging across the entire spectrum of the chemical sciences.

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by ACCT Admin
Wed, 08/12/2020 - 13:51

This formative assessment looks at two household chemicals (table salt and sugar) and compares their properties while looking at how they dissolve in water. The “Salt vs. Sugar” formative assessment explores students’ thinking about the question “How does structure influence reactivity?” The main idea that is being targeted is for students to think about what is happening at the molecular level during the solution process. This activity is important for students because it helps create a context for what some of the vocabulary and concepts mean by providing tangible examples of these concepts (such as the concept of saturation).This formative assessment looks at two household chemicals (table salt and sugar) and compares their properties while looking at how they dissolve in water. The “Salt vs. Sugar” formative assessment explores students’ thinking about the question “How does structure influence reactivity?” The main idea that is being targeted is for students to think about what is happening at the molecular level during the solution process. This activity is important for students because it helps create a context for what some of the vocabulary and concepts mean by providing tangible examples of these concepts (such as the concept of saturation).

Recent activity: 5 months 4 days ago
by ACCT Admin
Wed, 08/12/2020 - 13:19

In “How strong an acid is vinegar?” the students explore the nonlinear relationship between the concentration of a weak acid and the pH of the solution. This formative assessment targets the question “how does structure influence reactivity?”  Students need to understand the behavior of strong and weak acids to comprehend phenomena like buffering capacity.

Recent activity: 5 months 4 days ago
by ACCT Admin
Wed, 08/12/2020 - 11:06

This formative assessment was designed to target students’ thinking around the structure-property relationships in an accessible, real-world context. This is done through targeting noncovalent interactions. The understanding of this topic is critical for students’ reasoning about observable properties of matter.

Recent activity: 5 months 4 days ago
by ACCT Admin
Tue, 08/11/2020 - 12:18

In the Frying Ice formative assessment students explore the three phases of matter. This formative assessment targets the question “What cues are used to differentiate matter types?” The target of this formative assessment was for students to demonstrate their understanding of the three states of matter and how the particles in each state react when heated. 

Recent activity: 5 months 10 hours ago
by ACCT Admin
Tue, 08/11/2020 - 10:46

The fire story formative assessment is used to explore students' thinking about the question "what affects chemical change?" through a real-world problem. This formative assessment specifically probes students' understanding of energy and phase changes. There are several different explanations using different chemistry concepts that could be used to explain the phemomenon explained in the story. 

Recent activity: 5 months 4 days ago
by Deanna Cullen
Thu, 08/06/2020 - 07:46

As we continue to make plans to teach during these uncertain times we have been compiling a list of both new and previously published ChemEd X posts and resources that will be useful to readers while teaching during the COVID-19 pandemic. Do you have an activity, strategy or idea to share with the community? Is there a resource you would recommend? We welcome contributions. This list will grow, so check in again to see what has been added. 

Recent activity: 2 weeks 2 days ago
by Thomas Cox
Thu, 06/11/2020 - 18:38

Ice core science is truly cross-disciplinary as it draws extensively from chemistry, geophysics, geology, engineering, oceanography, microbiology, statistics, a deep understanding of historical events, atmospheric science, and climate science. And general chemistry topics include solubility, concentration, phase diagrams and changes, and stable isotopes in addition to many others. Let's take a first look at how ice core science can be used in teaching chemistry. 

Recent activity: 7 months 2 weeks ago
by Mary Saecker
Thu, 06/11/2020 - 09:10

Learning How to Do Chemistry

The of the Journal of Chemical Education is now available to subscribers. Topics featured in this issue include: innovative curriculum; exploring kinetics; engaging organic chemistry activities; molecular structure and symmetry; polymer chemistry; technology-based instruction; synthesis laboratories; undergraduate research experiences; from the archives: bath bombs and cosmetics chemistry.

Recent activity: 7 months 2 weeks ago
by ACCT Admin
Wed, 06/10/2020 - 13:48

Formative assessment is an important component of teaching as it enables teachers to enhance student learning. The written work that students produce on formative assessment tasks can be used to uncover student thinking and inform the decisions teachers make on how to support individual student learning.  

Recent activity: 3 weeks 1 day ago
by Dean Campbell
Sun, 05/17/2020 - 18:00

Potential enhancements to soda-based demonstrations of volcanic eruptions are described. Depending on the specific demonstration setup, outgassing of carbonated sodas can represent low-viscosity lava flows or more violent production of pyroclastic materials. These simple demos can be used as stand-alone experiments or in concert with other activities.

Recent activity: 8 months 5 days ago