Download - Chapter 4 Lesson 3 Gas Behavior. Chapter 4 Big Question How does a substance change states?
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Chapter 4 Lesson 3
Gas Behavior
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Chapter 4 Big Question
• How does a substance change states?
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Chapter 4 Objectives
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How are Pressure and Temperature of a Gas Related?
• Temperature increases, pressure increases• Temperature decreases, pressure decreases• Ex: truck tires burst on hot day– Temp. is increased, so is pressure– Pressure continues to increase until tires can’t
hold any more *BOOM*
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Temperature and Gas PressureWhen a gas is heated in a closed, rigid container, the particles move faster and collide more often. How would the change in pressure of the gas be shown on each pressure gauge?
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How Are Volume and Temperature of a Gas Related?
• Charles’s law– Temperature increases, volume increases– Temperature decreases, volume decreases– Volume and pressure have a directly proportional
relationship (increase or decrease at the same rate)
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Cooling a BalloonThe volume of a gas-filled balloon decreases as temperature
decreases and then increases as temperature increases.
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Charles’s LawHow would the gas particles and piston look at the
different higher temperatures?
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In an experiment, a gas is heated at a constant pressure. The data shown in the table are plotted on the graph.
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What happens to the volume of a gas when the temperature is increased at constant pressure?
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Suppose the data formed a line with a steeper slope. For the same change in temperature, how would the change in volume
compare?
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How Are Pressure and Volume of a Gas Related?
• Boyle’s Law– Pressure increases, volume decreases– Pressure decreases, volume increases– Inversely proportional relationship (opposite)
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Boyle’s LawAs weights are added to the top of each piston, the piston moves farther down in
the cylinder. Rank the pressure and the volume in each of the cylinders.
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Graphing Boyle’s LawUse the data to make a line graph. What would be a good title for
the graph?
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Boyle’s Law in Action
• https://www.youtube.com/watch?v=N5xft2fIqQU