Phases / Phase Transitions / Diagrams

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 94.12 December 2017 Issue Highlights

Improving Student Perception and Performance 

The December 2017 issue of the Journal of Chemical Education is now available online to subscribers. Topics featured in this issue include: functional nanomaterials and chemical detection; improving student performance; peer-led instruction; simulations and computer-based learning; engaging and interactive instruction; synthesis laboratories; NMR spectroscopy and mass spectrometry; innovative physical chemistry investigations; ConfChem Conference on select 2016 BCCE presentations; from the archives: music and chemistry.

JCE 94.10 October 2017 Issue Highlights

Celebrating the Value of Chemistry

The October 2017 issue of the Journal of Chemical Education is now available online to subscribers. Topics featured in this issue include: geochemistry in action; research on effective teaching and study approaches; keeping education and chemistry relevant; communication and writing; spectroscopy; chromatography; synthesis; teaching resources; mining the archive: chemistry rocks!