Lesson 4: Phase Changes
Consider the temperature versus time graph below. In which region is the substance in both the solid phase and the liquid phase?
2
When does carbon dioxide absorb the most heat energy?
During sublimation
Which example involves a phase change in which heat energy is released by the substance?
Freezing ice cream
Consider the heating curve for water. At what temperature does the solid start melting?
0 degrees C
The diagram below shows the different phase transitions that occur in matter. Which arrow would most likely represent the phase change that occurs when silver is poured into a mold and cools to become a solid bar?
5
The diagram below represent the four states of matter. Which diagram represents the phase that occurs after a solid melts?
Diagram 1