FS – G7 Week 14

Housekeeping: Students were provided with a practice quiz on Exam.net to help them prepare for Thursday’s Combustion Reaction quiz. To begin addressing students practice quiz scores…

B period – After the practice quiz, Dr. M asked students to think again of the individual atoms and molecules involved in the combustion reaction. This class discussion elicited questions about the relationship between atoms (on the one hand) and elements (on the other), so much of the remaining time in our discussion focused on the structure, purpose, development, and ‘hidden’ secrets of the Periodic Table of the Elements, but also the structure of atoms. B period thus did not get to using the molecular models as planned, so they were told their quiz would not include any questions about incomplete combustion.  

H period – After the practice quiz, Dr. M asked students to use the molecular modelling kits to build the “reactants” (i.e., wood/fuel + oxygen gas) and “products” (i.e., carbon dioxide gas + water vapor) for a complete combustion reaction. To helps student better understand an incomplete combustion reaction, Dr. M showed students a tea bag demo, which showed both the production of ash (particulate matter!) and an active convection current. At the end of the lesson students were asked to add “incomplete combustion reaction” to the troposphere layer of their atmosphere model.