https://phet.colorado.edu/en/simulation/gas-properties

In this experiment you will observe how the pressure, temperature and volume of a gas sample affect each other. You will make several plots showing the relationship, to get a quick refresher on how to plot a graph using Excel, watch the video. Follow the link above and select "Gas Properties" and then "Ideal". (1)Put a check mark on the width, stopwatch and collision counter tools so they become visible. (2) Begin by pumping enough gas in the chamber using the bicycle pump to bring its pressure to approximately 15 atm. Using the handle on the left, determine the maximum and minimum volumes for the chamber and record them.* When you chose the values for the volumes of your data points, you must stay within this range. 1. Volume

Vs. Pressure a. (3) Set the temperature to constant. Record its value as T1. Choose five different volumes and record the pressure for each volume in Table 1 under P1. Calculate the reciprocal of each volume and record them. Table 1.

Data Point	V	1/V	At T13	At T2
P2	P2
1			4
2
3
4
5

b. Use your data points to plot a (1/Volume) vs. Pressure graph. Label it Graph 1 c. Draw a tre

nd line (straight line) through your data points. d. Set the hold nothing constant button, raise the temperature by at least 40oC, and set the temperature back to constant. e.Record the new temperature as T2. Choose the same five volumes you used previously, and record the new pressures at each volume as P2. f.Plot the new data on graph 1 using a different color ink or pencil. 2.Volume Vs. Temperature a.Set the pressure button to constant. Record its pressure as P1. Choose the same or a different set of five volumes and record the pressures for each volume in Table 2 as T1. Table 2.

Table 2
Data Point	V	1/V	At T13	At T2
P2	P2
1			4
2
3
4
5

b.Use your data points to plot a Volume vs. Temperature graph. c.Draw a trend line through your data points. d.Set the hold nothing constant button, lower the temperature until the pressure drops to half of itsprevious value, and set the pressure button back to constant. e.Record the new pressure as P2. Chose the same five volumes you previously used, and record thetemperature at each volume. f.Plot the new data on graph 2 using a different color ink or pencil. 3.Temperature vs. Pressure a.Set the volume to constant. b.Record the pressure at 5 different temperatures. c.Make a plot similar to the ones you did in part 2 and part 1. You must decide which is more appropriate. d.Make a table and plot and label them Table 3 and graph 3 respectively. Post Lab Questions: 1.For part 1, how are the two plots at different temperatures different, and how are they similar? 2.If you plot V vs. P instead of 1/V vs. P. What effect does it have on the graph? 3.Why do you think that the reciprocal of the volume (1/V vs. P) is used in part 1, but not in part 2 (V vs T).Explain your answer. 4.Which did you choose to plot Part 3 , T vs. P or 1/T vs P. Why did you choose that plot. 5.How does temperature affect the volume? 6.What would you expect would happen to the molecules at 0 K.