ate the three unknown samples and examine them closely. Note: You have already developed a set of hypotheses in Exercise 2, question 4. Refer to these hypotheses as needed. Design an experiment to determine the identity of the unknowns using at least 3 methods of identification. Record the steps that you will take in Panel 1: Experimental Methods. Determine the appearance, scent, mass(g), behavior in water and behavior in vinegar for unknowns 1-3. Record all data in Data Table 7. Based on the data you collected, draw a conclusion about the identity of each substance. Note: Refer back to the data you collected in Data Tables 2-6 to help in your identification of the unknowns. Record your conclusions in Data Table 7. Cleanup: Dispose of the solid samples in the trash bin. Pour the contents of each test tube down the sink. Thoroughly clean the test tubes with dish soap, tap water, and a test tube cleaning brush. Dry the test tubes by shaking out any excess water. Wash, dry, and return all equipment to the lab kit for future use