Jack and his lab partner did an experiment on the results of heating different combinations of chemicals on a hot plate. He performed four trials, each combining two different chemicals. Jack recorded several observations from the experiment.

which of his observations was a qualitative result?a. the product of the fourth trial was a liquid with a volume of 150 ml. b. the chemicals combined in trial one turned blue when heated. c. the product of the second trial was a solid with a mass of 50g.