Preview - Ideal Gas Laws - Connected Chemistry 2019

Using CODAP to develop a mathematical Pressure-Temperature model

Now let's go ahead and conduct our experiment within CODAP!!!

Note: If you do not remember the exact details, you can see your experimental design below the CODAP window. If you are not sure about your experimental design, consult your teacher. Here are a few considerations to keep in mind:

  1. Run each experiment long enough so that all three plots stabilize before your model reports the data.
  2. Keep non-involved parameters (e.g., number of particles, ticks-to-run) fixed at all experiments.
  3. Run at least 3 trials (repetitions) for each combination.
  4. Try at least 5 different values for the independent variable (temperature/outside-energy).
  5. Speed up the model to conduct the experiments as fast as possible.

 

Did you also find a mathematical equation using CODAP's "movable line" tool? If you did not, please do it now.

If you do not remember exactly, here is how to do it:

  1. Load your CODAP savefile by clicking CODAP's hamburger menu () and then clicking "Open".
  2. Open your file from the "Local File" section. You should have all your data back in the "Experiment Results" table, as well as your plot.
  3. Click anywhere on the plot, and then click the ruler icon ().
  4. Click the  option.
  5. A line with three anchor points will appear. Move the line as shown on the right to fit the data as best as you can.
  6. Note the linear equation 🔗 (with yellow background) that CODAP generates for us.

Referenced Questions

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

In the next page, you are going to conduct another computational experiment. Once again, you will conduct an experiment to answer a pre-determined research question:

Dependent variable: (P)ressure
Independent variable: (T)emperature
Research question:

Is there any mathematical relationship between these two variables?

If yes, what is the nature of this relationship?

Note: Remember that you cannot manipulate the gas temperature directly. You can manipulate it only indirectly by manipulating the "outside energy" parameter. Hence, the table below does not have a "temperature" column. 

 

Also note: Remember the experiment you ran in the previous lesson and also remember that you will run this experiment within CODAP in the next page.

Questions

Please answer the questions below.

First and foremost, save your CODAP experiment and upload it using the "Browse" button below. You can do it as follows:

  1. Click the hamburger menu () icon on he top-left corner of the CODAP window.
  2. Click Save ().
  3. Choose the Local File option ()
  4. Click Download ().
Upload files that are less than 5MB in size.
File Delete

What is the mathematical equation you found?

Note: Remember that you can omit the last part of the equation (b, in y = mx + b).

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.