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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 (base particles 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. Solids maintain their own shape. Using particle view of matter, explain why this occurs? What is the energy added to the system used for when a solid particle becomes a liquid particle (process is called melting)
6. Solid phase and liquid phase are called the "condense phases". How are they similar to each other.
7. Knowing that a vapor and a gas are particles that are in the gas phase, how are they different?
8. 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).
9. 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.
10. Looking at the Heating curve you made in class, which process did you completed in the lab required the most amount of energy.
11. Which two processes did you do to the ice/water that has similar amount of energy needed to be absorbed by the system. Can look at your Common calculation table (given to you in class or can be seen online via appropriate link).
12. Also look at Common calculation table, how many times larger (or smaller) is the amount of energy (actually recorded time) needed to go through the liquid phase compare to the phase change of vaporization (you call it boiling). Support your answers with your actual lab observation.