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Answer the following questions in a clear and concise manner.
1. Was what you performed in this lab a physical (base particle did not rearrange) or chemical change (did rearrange).
2. Was what you performed in the lab exothermic or endothermic. Explain
2. What is NOT changing when a substance goes through a phase change like melting? What is the energy added to the system being used for?
3. When you stay within a phase and you add energy to the system, what is changing? How is the energy that is added being distributed to the individual particles in the substance?
4. Why can not a liquid particles go anywhere? How does this affect the shape of the container that liquids can occupy.
5. What is updated definition of boiling?
5. Knowing that a vapor and a gas are particles that are in the gas phase, how are they different?
6. Looking at the Heating curve you made for this lab, what are the two things that are being held constant in this lab (except when the water vapor is allowed to go anywhere in the room).
7. In this lab, you did NOT record data on energy added to system. What did you actual record and how can you assume they are equal to each other.
8. Looking at the Heating curve you made in class, which process you completed in the lab required the most amount of energy.
9. How is the actual heating curve different from the one most books show?
8. Is phase changes or not phase changes (staying in same phase) require more energy, circle one.
9. What are the two things that are held constant (that most people don't talk about) when one is showing/explaining the heating curve?
10. In the space below or on the back of page, draw the actual heating curve (as we did in the lab in class) labeling axes.