I.Introduction: Determining traces of chemicals in a lab from a crime scene is a real world application ofthis project. Finding whatever the chemical is and the amounts are necessary when trying to trying to solve a murder. Forensic scientist use test, similar to ours and more, to identify the unknown sample (1). Using a Chemical composition analysis test, scientist can determine the quality, identity, composition, and impurities of the chemicals in question; this is similar to the analysis of ions (2). My group and I were given sample C and conducted a series of test to identify the material. Every test conducted helps us identify the characteristics and qualities on the solid compound we received. The concepts that had to be grasped for this project were the analysis of ions, solubility test, flame test, conductivity test, gravimetric analysis, measuring volumes at different levels of accuracy, and titration. We added these new concepts to the ones we had learned from our previous mini-labs such as stoichiometry, precipitation reactions, and random and systematic error. Easier to use the solids as a solution for the test, we mixed them to be able to do most of the test we preformed. The objective of this project was to identify the unknown substance given using a qualitative analysis and to determine which test are best to use to identify the substance. We predicted that Substance C was Ca(NO3)2 after looking at photos of every chemical we could have been given and comparing it to what we had. The objective of performing the pH test was to measure the acidity or basicity of a solution. Our conductivity test was used to see if the substance was able to conduct electricity, we had to make our substance a solution for this test.