Posters

Event Title

The Effect of a Chemistry Case Study on Students’ Understanding of Chemical Bonds

Date

4-10-2021

Location

Online

Description

Perfluoroalkyl and polyfluoroalkyl (PFAS) substances are a group of synthetically produced organic compounds. These compounds have hydrophobic and lipophobic properties and their unique chemical structure render the chemicals practically non-biodegradable. These compounds are generally used as surfactants or to create products that are water and oil repellent and heat and acid resistant. Over the past few years, PFAS compounds have been receiving media attention for their adverse environmental and health effects. PFAS compounds are extremely relevant to college chemistry students because their stability in the environment can be attributed to their chemical structure. PFAS compounds contain the strongest bond in organic chemistry, the carbon-fluorine (C-F) bond. Our research group has developed a case study focused on PFAS compounds to help students understand important chemistry topics: chemical bonds, electronegativity, atomic radius, bond length, dipole moment, and bond enthalpy. These topics explain why the C-F bond is a strong bond. Here, we present the case study and data analysis from the first round of completed workshops. Data analysis will help identify any statistically significant improvements in students’ survey responses related to their understanding of chemical bonds. For these important reasons PFAS compounds are relevant both to news outlets and the chemistry classroom.

Presentation Type

Poster

Streaming Media

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The Effect of a Chemistry Case Study on Students’ Understanding of Chemical Bonds

Online

Perfluoroalkyl and polyfluoroalkyl (PFAS) substances are a group of synthetically produced organic compounds. These compounds have hydrophobic and lipophobic properties and their unique chemical structure render the chemicals practically non-biodegradable. These compounds are generally used as surfactants or to create products that are water and oil repellent and heat and acid resistant. Over the past few years, PFAS compounds have been receiving media attention for their adverse environmental and health effects. PFAS compounds are extremely relevant to college chemistry students because their stability in the environment can be attributed to their chemical structure. PFAS compounds contain the strongest bond in organic chemistry, the carbon-fluorine (C-F) bond. Our research group has developed a case study focused on PFAS compounds to help students understand important chemistry topics: chemical bonds, electronegativity, atomic radius, bond length, dipole moment, and bond enthalpy. These topics explain why the C-F bond is a strong bond. Here, we present the case study and data analysis from the first round of completed workshops. Data analysis will help identify any statistically significant improvements in students’ survey responses related to their understanding of chemical bonds. For these important reasons PFAS compounds are relevant both to news outlets and the chemistry classroom.