Introduction to Gas Laws

The purpose of this lab activity is to determining different relationships and equations between pressure, volume, temperature, and moles of a gas.

To determine each relationship you will need to know the following basic information:

1. Whatever you are not examining, keep constant (notice the option in the top right corner).

2. It helps to reset between questions (not between trials). Add the molecules, allow them to fill the container, then pick what you are keeping constant.

3. For each, question create a data table. You need to have at least 5 to 10 data points to create a good graph in logger pro.

4. In your lab book you need the following for each relationship:

   • Title

   • Data table

   • Graph

   • Equation

   • Relationship

Use the program (Gas Properties) to determine the following relationships:

• How does changing temperature affect pressure?

• How does changing volume affect pressure?

  • In order to measure the volume you will need to turn on the ruler tool (for the length), the layering tool (for the height), and assume the width is 1nm.

• How does changing temperature affect volume?

  • If the little person holding the box walks to the very end of the screen, you may not be getting accurate readings. You may need to start over.

• How does changing the number of molecules affect the pressure?

  • Keep the volume constant for this one because each time you add molecules, they will enter the container with the same temperature as the molecules already in the container.