In honor of the International Year of the Periodic Table: A familiarity with the chemistry of some of the elements more commonly encountered in everyday life is a valuable learning experience for all students. Oxygen is the second in this series of elements to be discussed as part of the Element of the Month program. #IYPT
Ninety-Six Years New
The January 2019 issue of the Journal of Chemical Education is now available online to subscribers. Topics featured in this issue include: chemical biology, innovative curriculum for the classroom and laboratory, promoting effective teaching methods in organic chemistry, improving student conceptual models, cost-effective and low-waste equipment and experiments, using instructional videos to teach, exploring materials science, instrumental analytical experiments, organic chemistry laboratories, research on success in chemistry, from the archives: anodizing.
Embracing the idea that students already create an image, create an idea, of what is happening when they observe a demonstration, lab or activity. The goal is to have the students make that model more concrete through drawing it.
Curricular Alignment for Student Success
The February 2018 issue of the Journal of Chemical Education is now available online to subscribers. Topics featured in this issue include: diversity within the classroom; assessment and curricular alignment; innovations in laboratory curriculum; electrochemistry; analytical chemistry labs; exploring materials science; engaging teaching approaches; historical perspectives; distilling the archives: lab-on-a-chip and microfluidic devices.
Students can build their own Hoffman apparatus. An animation of the electrolysis on a particulate level is available to show students before, during or after students perform the electrolysis.
There are many places online to build a DIY Hoffman apparatus. The ACS offers an electrolysis of water lesson that includes a hand made Hoffman apparatus(link is external) as part of a unit on energy that I used as a resource.
Electrolysis of an aluminum nitrate solution produces oxygen at the anode and hydrogen at the cathode.
Electrolysis of a potassium nitrate solution produces oxygen at the anode and hydrogen at the cathode.
Electrolysis of a calcium nitrate solution produces oxygen at the anode and hydrogen at the cathode.