Gas,volume Pressure

• What can be changed in a gas column without affecting its temperature?

  Pressure and volume
• Describe the setup of a simple gas column used to study gas behavior.

  • Bottom filled with oil to trap air
  • Volume of gas can be changed by pumping oil
  • Temperature remains constant during the process
• What happens to the volume of air when more oil is pumped into the gas column?

  The volume of air decreases as it is compressed by the oil
• How does pumping oil into the gas column affect the air pressure?

  The air pressure increases as the volume decreases
• Why is there a relationship between the volume and pressure of a gas?

  Reducing the volume causes gas particles to collide with walls more frequently
• What happens to the distance air particles travel when the volume is reduced?

  The distance is shorter, leading to more frequent collisions with the walls
• What is the effect of more frequent collisions on gas pressure?

  It increases the pressure
• How does surface area relate to gas pressure when volume decreases?

  The outward force is spread over a smaller surface area, increasing pressure
• What is the formula for pressure in relation to force and area?

  Pressure = Force / Area
• What happens to gas pressure if the volume is increased?

  The pressure of the gas will decrease
• What occurs when the oil level in the column is lowered?

  The air expands and takes up a larger volume
• How does the relationship between gas volume and pressure confirm Boyle's Law?

  By measuring pressure and volume at constant temperature, a curve is plotted showing inverse relationship
• What should be remembered when plotting the graph of pressure versus volume for a gas?

  • The graph should show a curve
  • It illustrates that as pressure increases, volume decreases
  • Important for exam recall and sketching
• What is the purpose of using a pressure gauge in the gas column experiment?

  To determine the pressure exerted by the air on the oil
• Why is it important to keep the temperature constant during the gas volume and pressure experiment?

  Because temperature affects gas pressure
• What is the relationship between pressure and volume in gases as described in the study material?

  As pressure increases, volume decreases and vice versa
• How can you confirm the relationship between pressure and volume in a gas?

  By taking measurements and plotting a graph at constant temperature
• What resources does Launchpad Learning offer for GCSE revision?

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