Temperature measurement during a phase change.

Experimental setup to record temperature during a phase change in Lauric acid.  (Experiment 14, Addison-Wesley Chemistry Laboratory, 4th ed.)

Close-up of experiment.  Student is agitating Lauric acid in the test tube using a copper wire.  Note the temperature probes (black)—one in the water bath, and one in the test tube

Display of data from phase change experiment.  Page shows graphs of melting and freezing of Lauric acid, table of data, and student answers to questions in the laboratory manual.

CCA Science