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40 POINTSSS PLEASE HELP
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 chemicals combined in trial three had a volume of 200 mL before heating.
B.
The product of the fourth trial was a liquid with a volume of 150 mL.
C.
The product of the second trial was a solid with a mass of 50g.
D.
The chemicals combined in trial one turned blue when heated.
Sagot :
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