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Kinetic theory describes the behaviour of particles in solids, liquids and gases - Edexcel - GCSE Physics - Question 4 - 2017 - Paper 1
Question 4
Kinetic theory describes the behaviour of particles in solids, liquids and gases. (a) Complete the sentence by putting a cross (X) in the box next to your answer. ... show full transcript
Worked Solution & Example Answer:Kinetic theory describes the behaviour of particles in solids, liquids and gases - Edexcel - GCSE Physics - Question 4 - 2017 - Paper 1
Step 1
Step 2
Explain how the gas in the cylinder exerts pressure
Answer
The gas exerts pressure on the sides of the cylinder by making collisions with the walls. Each time a gas particle collides with the wall, it exerts a force on the wall. Since many particles are constantly moving and colliding, this results in a consistent pressure being applied.
Step 3
Explain why the pressure of the gas inside the cylinder increases if the cylinder gets hot
Answer
As the temperature of the gas increases, the kinetic energy of the gas particles also increases. This causes the particles to move faster and collide with the walls of the cylinder more frequently and with greater force, thereby increasing the pressure inside the cylinder.