When ChemLab is started or a new file is created the simulation dialog box will open. From this dialog box pick a simulation module to load. This will load the text window with the instructions necessary to perform the lab. Read the lab introduction in the introduction text window. The introduction will explain the basic science behind the lab. After reading the lab introduction read the procedure. To select the procedure click the procedure tab above the text window. In the procedure you will find the basic steps to complete the lab, you should first read the procedure completely before attempting the lab. If you are not sure how to perform a certain action check the lab manual or help for directions. Then perform the lab following the steps in the procedure. While performing the procedure you can record your observations in the observation text window, these will be saved in the ChemLab file.