When 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 of bonds. 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 . word bank: acid adhesion base cohesion covalent hydrogen ionic neutral solute solvent vinegar water