Q1. What will happen when the corner of the jar is raised and the seal is broken? Make a prediction. Q2. What is in the empty chamber that attracts the air molecule?
Q1. What will happen when the corner of the jar is raised and the seal is broken? Make a prediction. Q2. What is in the empty chamber that attracts the air molecule?
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Question
Transcribed Image Text:ENTROPY, MICROSTATES, AND PROBABILITY
Overview
Expansion of a gas at the molecular level is explained in terms of particle motion and
probability.
Learning Objectives
At the end of the activity I am able to:
1. Explain a spontaneous process - such as air rushing in to an evacuated chamber -
using particle motion at the molecular level;
2. Distinguish between spontaneous and non-spontaneous processes, and connect
these to a probabilistic description of matter;
3. Explain how a large number of microstates can produce the same macro-state;
4. Use particle motion and probability to explain heat transfer.
Procedure
Direction: This is a guided inquiry activity. Visit the links suggested and observe. Answer the
questions in the space provided.
Air Entering an Evacuated Chamber
Image CC-eY icensed from H Grobe via Wikimedia
Figure 1: Air Moving into an Evacuated Chamber.
Figure 1 shows a vacuum pump has been removing air form the glass chamber.
Q1. What will happen when the corner of the jar is raised and the seal is broken? Make a
prediction.
Q2. What is in the empty chamber that attracts the air molecule?
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