Physics 0625 · IGCSE · Kinetic particle model of matter

Kinetic particle model of matter — practice question

A bubble of gas moves upward from the bottom of a lake to the surface. The table gives values for the gas pressure within the bubble and the bubble’s volume. The water temperature in the lake stays constant. Three rows in the table are correct, but one row is incorrect. Which row is incorrect?

  • Apressure $360\,\text{kPa}$, volume $2.4\,\text{cm}^3$
  • Bpressure $270\,\text{kPa}$, volume $3.2\,\text{cm}^3$
  • Cpressure $160\,\text{kPa}$, volume $4.6\,\text{cm}^3$
  • Dpressure $120\,\text{kPa}$, volume $7.2\,\text{cm}^3$

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