Preview - Kinetic Molecular Theory

The Relationship Between Number of Particles and Pressure

If we graph the data we acquired on page 3 (your data is shown on this page for your reference), our graph would look something like this:

The graph pictured above shows a direct relationship between the two variables (number of gas particles and pressure), that is, as number of particles increases, pressure also increases.

Referenced Questions

These questions were answered in the previous steps. They are provided here for your reference.

To complete the following data table, you will first set up the simulation as described above. Then, run the simulation with 50, 100, and 150 heavy particles. For each particle amount, record the highest pressure observed. After you have collected data for all nine trials calculate average pressures for 50, 100, and 150 heavy particles.

Is the relationship between number of particles and pressure direct or inverse? Justify your answer by citing evidence from your data table in question 3.1 above.

Questions

Please answer the questions below.

Use the definition of pressure (the frequency and force with which gas particles collide with the walls of their container) to explain why increasing the number of gas particles increases pressure when both temperature and volume are held constant.

Notes

These notes will appear on every page in this lesson so feel free to put anything here you'd like to keep track of.