An experiment that compares product distribution obtained by either substitution or elimination utilizing alkyl bromides and methoxide, ethoxide, or t-butoxide as the base (or nucleophile) is described. The change in product distribution caused by steric effects of the base and substrate are readily apparent. Prior work on this experiment focused on only the olefin products using a method without internal standards. The experiment examines all ether and olefin products as well as starting material and illustrates key principles of S[subscript N]2-S[subscript N]1 and E2-E1 reactions. For this experiment, a gas chromatographic method was developed that allows for complete product analysis. The new method examines the product distributions as a function of primary, secondary, and tertiary alkylbromide and base structure and can be expanded to include the interpretation of gas chromatographic data. Relative response factors were developed for the ether versus olefin products. If desired, the data in the supporting information can be utilized for in-class problems pertaining to substitution and elimination reactions. (Contains 3 tables and 5 figures.)