A new physical chemistry laboratory experience has been designed for upper-level undergraduate chemistry majors. Students customize the first 10 weeks of their laboratory experience by choosing their own set of experiments (from a manual of choices) and setting their own laboratory schedule. There are several topics presented in the accompanying lecture course that students should explore in the laboratory, but there are generally many good experiments that could be used to help them reach the same learning goals. Students in this laboratory are required to complete at least one experiment from each of several categories but have flexibility in exactly which experiments they will perform. Because the experiments are all designed to be the first introduction of new concepts from the course, they can be performed at any time during the semester and in any order. In the last four weeks of the semester, each student is given the opportunity to extend his or her specific interests by designing and carrying out a special laboratory project. (Contains 2 tables.)