Lizzy Single

In this activity, students need to find out which suspect murdered Chem S. Tree. They have information about motives and a chemical residue found on each suspect. They need to calculate the empirical formula of the herbicide found in Chem S. Tree and match it to the empirical formula of the white residue found on the guilty party. It involves calculating 5 empirical formulas of varying difficulties and comes with color pictures of each suspect and the victim.

This is a quick warm-up to help illustrate the process of dimensional analysis. It has students look for patterns and discover that units on the top cancel with units on the bottom, using symbols instead of units.