Gas pressure and temperature

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Question 5
Medium

A student seals a sample of gas inside a syringe connected to a digital pressure sensor.

The temperature of the gas remains constant during the experiment.

The plunger of the syringe is pushed in to decrease the volume of the gas, and the pressure is recorded.

The results are plotted on the graph in the figure below.

A graph showing Pressure in kilopascals (kPa) on the vertical y-axis versus Volume in cubic centimetres (cm³) on the horizontal x-axis. The curve shows that as volume decreases from 60 cm³ to 15 cm³, the pressure increases from 50 kPa to 200 kPa, representing an inversely proportional relationship characteristic of Boyle's Law.

Explain, in terms of the motion and collisions of gas particles, why the gas exerts a pressure on the inside of the syringe, and why the pressure increases as the volume is decreased.

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Gas pressure and temperature Questions

  1. GCSE
  2. /Physics
  3. /Gas pressure and temperature