misconceptions/discrepant events

JCE 95.08 August 2018 Issue Highlights

Relevant Topics for Instruction and Assessment

The August 2018 issue of the Journal of Chemical Education is now available online to subscribers. Topics featured in this issue include: the chemistry of candy and sugar, examining virtual learning for laboratories, strengthening student understanding of acid-base chemistry, building scientific communication skills, emphasizing learning, sustainability and green chemistry, cost-effective resources and techniques, laboratory investigations, ConfChem conference on mathematics in undergraduate chemistry instruction, erupting from the archive: soda geysers.

Two Simple and Cheap Illustrations of Phase Equilibrium and Vapor Pressure

A favorite demonstration is to boil water by lowering the pressure in a bell jar using a vacuum pump. Unfortunately, purchasing a bell jar, vacuum plate, and vacuum pump can run upwards of $1,000 which poses a hardship for many teachers. Here are two simple and inexpensive demonstrations of phase equilibrium and vapor pressure.

Time required: 

 

Setup: 5 minutes

Execution: 5 minutes to 30 minutes depending on level of inquiry

 

JCE 95.07 July 2018 Issue Highlights

Innovation and Scholarship

The July 2018 issue of the Journal of Chemical Education is now available online to subscribers. Topics featured in this issue include: connecting art and energy, solar cells, examining organic chemistry students’ understandings, computer-based learning, molecular symmetry and visualization, inquiry-based learning, safety management, biochemistry, watching the archive: chemistry goes to the movies.

Technology Considerations for the Chemistry Classroom

Technological Pedagogical Content Knowledge (TPCK) can be the vehicle by which teachers decide if and how a technological application can be incorporated into their classrooms. TPCK more recently coined as TPACK technology, pedagogy and content knowledge incorporates technology into Lee Shulman’s pedagogical content knowledge (PCK) construct. PCK is the means by which a teacher takes his/her content knowledge and transforms it into content knowledge for his/her students.