Is the water in the cup dirty? Why or why not? What happened to the water in the bowl?
This project simulates a real world process. What does the plastic wrap represent? What does the water in the cup represent?
Which two parts of the water cycle are at work?

What amount of heat is exchanged when 106.2 grams of substance y goes from a liquid at 35 degrees celsius to a solid at the same temperature? melting point of substance y = 35 degrees c; δhvaporization = 3.67 j/mol; δhfusion = 3.30 j/mol. mwsubstance y = 28.22 g/mol. −12.4 j −3.51 x 102 j 1.24 x 101 j 351 j