CH 153 GRAPHING GAS BEHAVIOR

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CH 15-3GRAPHING GAS BEHAVIOR
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GRAPHS ARE DIAGRAMS THAT TELL HOW TWO VARIABLES
ARE RELATED
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A. Temperature and volume

• Collecting data
• Begin by collecting 2 sets of data
• Like temperature and volume
• Use a data chart

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A. Temperature and volume

• 3. Kelvin is a third type of temperature scale
• a. to use Kelvins, adding 273 from your
  Celsius temperature.

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A. Temperature and volume

• 4. Graphing the results
• a. horizontal line x axis
• b. vertical line y axis
• c. x the manipulated variable
• d. y the responding variable

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A. Temperature and volume

• 4. Graphing the results
• e. see figure 19 on page 482
• f. if a straight line goes through points
• (0,0) then the variables are said to
• be directly proportional

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A. Temperature and volume

• 5. The graph of Charless law shows that the
• volume of a gas is directly proportional to
• its temperature.

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B. Pressure and Volume

• When a graph of 2 measurements are said to vary
  inversely with one another then the line will be
  a curve.
• See figure 21 on page 483

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B. Pressure and Volume

• 3. Example pressure decreases as volume
  increases
• a. in other words, they are doing the
  opposite

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B. Pressure and Volume

• 4. The graph for Boyles law shows that the
  pressure of a gas varies inversely with its
  volume.