Amanda and Pol were in science lab, trying to identify a colorless liquid. Their observations were as follows: Amanda poured some of the liquid in a test tube, she noticed that the edges of the water curved upward, which is an example of. When Pol filled another test tube to the top, the liquid formed a low dome, which is evidence of. When Amanda added table salt to the first test tube and shook it, she noted that the liquid had dissolved the. All of these observations indicated the presence ofbonds. Pol determined that the pH of the sample is 7, which shows the sample is. Based on all of the evidence Amanda and Pol gathered, the unknown liquid is.