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2.1 Kinetic particle model of matter

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Question 19

A bubble of gas is formed deep under water. The bubble has a volume of 30 cm3 and the pressure inside the bubble is PPP.

The bubble rises up through the water. The volume of the bubble increases to 45 cm3 and the pressure becomes 120 kPa. The temperature of the gas does not change.

What is the initial pressure PPP?

A

80 Pa80\text{ Pa}80 Pa

B

80 kPa80\text{ kPa}80 kPa

C

180 Pa180\text{ Pa}180 Pa

D

180 kPa180\text{ kPa}180 kPa

Markscheme

2.1 Kinetic particle model of matter Questions

  1. IGCSE
  2. /Physics
  3. /2.1 Kinetic particle model of matter

321 exam-style questions on CIE IGCSE Physics 2.1 Kinetic particle model of matter, covering 2.1.1 States of matter and changes of state, 2.1.2a Particle structure and motion in solids, liquids and gases, 2.1.2b Gas pressure and particle collisions, 2.1.2c Brownian motion, 2.1.3a The absolute scale of temperature, and 2.1.3b Pressure, volume and temperature of a gas. Each one has a worked solution and a mark scheme showing where the marks go.

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