Pressure and Volume Lab with Marshmallows
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Questions and Answers

What is the specific definition of gas pressure in physics and chemistry?

  • The force exerted by gas molecules on an object
  • The physical force exerted on or against an object
  • The force exerted by a gas on the walls of its container (correct)
  • The continuous force exerted by a gas

    • How is volume usually measured when describing gases?

  • In liters
  • In meters cubed (correct)
  • In moles
  • In grams

    • If you increase the temperature of a gas, what response does volume have to make according to the text?

  • Volume remains constant
  • Volume changes in an unpredictable way
  • Volume increases (correct)
  • Volume decreases

    • In the context of gases, what must happen if the temperature of a gas increases?

    <p>Volume increases (B)</p> Signup and view all the answers

    Why are marshmallows used as an analogy for understanding how gases behave?

    <p>Because they contain little pockets of air inside them (A)</p> Signup and view all the answers

    Which unit is commonly used to measure gas pressure?

    <p>Atmospheres (D)</p> Signup and view all the answers

    What is the relationship between pressure, volume, and temperature in gases?

    <p>If one increases, the other two can either increase or decrease in specific ways. (A)</p> Signup and view all the answers

    What happened to the marshmallows when air was removed from the jar in the first part of the experiment?

    <p>They expanded (A)</p> Signup and view all the answers

    Why did the marshmallows expand when air was removed from the jar?

    <p>Decreased gas pressure inside the jar led to increased volume (B)</p> Signup and view all the answers

    What is true about Boyle's Law?

    <p>Pressure and volume are inversely proportional at constant temperature (D)</p> Signup and view all the answers

    How did the marshmallows react when heated in the microwave during the second part of the experiment?

    <p>They expanded significantly (A)</p> Signup and view all the answers

    Why did the marshmallows expand significantly when heated in the microwave?

    <p>An increase in temperature led to an increase in volume (B)</p> Signup and view all the answers

    What does Charles' Law state?

    <p>Temperature is proportional to volume at constant pressure (B)</p> Signup and view all the answers

    How can Boyle's Law be summarized?

    <p>Pressure and volume have an inverse relationship at constant temperature (B)</p> Signup and view all the answers

    In the context of gases, what does pressure refer to?

    <p>The force exerted by gas molecules on the container walls (A)</p> Signup and view all the answers

    How is volume typically measured when describing gases?

    <p>In meters cubed (A)</p> Signup and view all the answers

    What happens to gas volume when its temperature increases?

    <p>It increases (D)</p> Signup and view all the answers

    Why are marshmallows a suitable analogy for understanding gas behavior in this lab?

    <p>Because they contain pockets of air and expand under certain conditions (C)</p> Signup and view all the answers

    What is the unit commonly used to measure gas pressure?

    <p>Pascal (D)</p> Signup and view all the answers

    If you decrease the volume of a gas while keeping the temperature constant, what happens to the pressure?

    <p>It increases (C)</p> Signup and view all the answers

    What is the relationship between pressure and volume in gases when other factors are constant?

    <p>Inverse relationship (A)</p> Signup and view all the answers

    Why did the marshmallows expand when air was removed from the jar?

    <p>Decreased gas pressure inside the jar (B)</p> Signup and view all the answers

    What is the relationship between pressure and volume according to Boyle's Law?

    <p>Inversely proportional (B)</p> Signup and view all the answers

    How does Charles' Law explain the expansion of marshmallows when heated in the microwave?

    <p>Volume increases with increasing temperature (B)</p> Signup and view all the answers

    What happens to gas molecules when air is removed from a container?

    <p>They spread out to fill a larger space (B)</p> Signup and view all the answers

    Why did the text suggest microwaving a fresh marshmallow after removing air from the jar?

    <p>To demonstrate Charles' Law (D)</p> Signup and view all the answers

    Which law explains the expansion of marshmallows in the microwave when heating them?

    <p>Charles' Law (A)</p> Signup and view all the answers

    What happens to gas pressure when air is removed from a container?

    <p>Decreases (D)</p> Signup and view all the answers

    Why does removing air from a container lead to the expansion of marshmallows?

    <p>&quot;Decreased pressure equals increased volume due to Boyle's Law&quot; (B)</p> Signup and view all the answers

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