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.