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3.3 Particle model and pressure

3.3 Particle model and pressure

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Question 6

A student investigates the relationship between the pressure and volume of a fixed mass of gas sealed in a syringe connected to a pressure sensor. The relationship is given by the equation: \

\\text{pressure} \\times \\text{volume} = \\text{constant}{\char"24}$
a.

State the physical quantity, other than mass, that must be kept constant for this relationship to hold.

[1]
b.

The initial volume of the gas in the syringe is 15textcm315\\text{ cm}^315textcm3 and its initial pressure is 120,000textPa120\\,000\\text{ Pa}120,000textPa. Calculate the value of the constant in \text{Pa cm}^3.

[2]
c.

The plunger is pushed slowly inwards so that the volume decreases to 10textcm310\\text{ cm}^310textcm3. Calculate the new pressure of the gas.

[2]
d.

Choose whether there is more space, less space, or the same space between the gas particles as the volume decreases.

[1]
Markscheme

3.3 Particle model and pressure Questions

  1. GCSE
  2. /Physics
  3. /3.3 Particle model and pressure

8 exam-style questions on AQA GCSE Physics 3.3 Particle model and pressure, covering 3.3.1 Particle motion in gases, 3.3.2 Pressure in gases, and 3.3.3 Increasing the pressure of a gas (HT only). Each one has a worked solution and a mark scheme showing where the marks go.

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