Building Models of Isomers

organic model kit

Students will build models of isomers while the instructor walks around from station to station to critique the models. If the model is incorrect, the students rebuild until they get it right. The paper that accompanies this assignment is very easy to grade. 

Time required: 

one 50 minute class

Hoffman Apparatus on the Go....

Hoffman apparatus

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. 

AMTA Webinar Series: Engineering in the Modeling Classroom


The NGSS calls for the use of the engineering design process in science classrooms K12. Let’s discuss what this means for the modeling classroom. Bring your ideas about how and when to integrate the engineering design process and engineering projects into your classroom. Free Webinar for all AMTA members!

AACT Webinar Series: Connecting Molecular to Macroscopic

Register now to attend the AACT webinar on January 25 at 7:00 EST. This webinar will introduce demonstrations you can use when they first learn the material, or as they prepare for the AP test. You'll be provided with demonstration questions that can be scaled up or down depending on the level of chemistry that you teach.

Misconceptions and Struggles with Double Displacement reactions and dissolving...

double displacement

Looking over my student's papers, there may have been more misconceptions created because of the way I planned the curriculum. In all of the experiments students can see and observe that not all of the crystals or material dissolves yet the water starts to conduct. In their minds there is evidence that they believe either something DOES dissolve or it does NOT. Clearly, partial dissolving is initially too much to consider.

Excellent Resource for Teaching Chemical Kinetics

AP Insight logo

Chemical kinetics is one of the five challenge areas in AP Chemistry. My students and I have been working our way through one of the teaching and learning activities called Concentration vs. Time. The graphical analysis, guided-inquiry questions, and application to past and future content are seriously challenging, and my students report higher levels of understanding than in past semesters.

Chemical Mystery #9: Liquid Nitrogen vs. Dry Ice

Bucket launch

A 2L soda pop bottle is filled about one-third full with either liquid nitrogen or solid carbon dioxide (dry ice) and water. The bottle is sealed and a plastic bucket is placed on top. Do you think the liquid nitrogen or dry ice and water will make the bucket go higher? Can you explain the results using chemistry?