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Complete the sentence by putting a cross (X) in the box next to your answer - Edexcel - GCSE Physics - Question 2 - 2014 - Paper 1
Question 2
Complete the sentence by putting a cross (X) in the box next to your answer. Kinetic theory describes gases as particles that: ☐ A only vibrate ☐ B do not move at ... show full transcript
Worked Solution & Example Answer:Complete the sentence by putting a cross (X) in the box next to your answer - Edexcel - GCSE Physics - Question 2 - 2014 - Paper 1
Step 1
Kinetic theory describes gases as particles that:
Answer
The correct option to complete the sentence is B, which states that gas particles do not move at absolute zero. This is because, at absolute zero (0 Kelvin), the particles theoretically possess no kinetic energy and therefore do not move.
Step 2
(i) Explain how the particles in the gas exert a pressure on the syringe.
Answer
The particles in the gas exert pressure on the syringe through collisions with the walls of the syringe. When the gas particles move randomly and collide with the syringe walls, they create a force. This force is distributed over the surface area of the syringe, resulting in pressure. The more frequent and forceful the collisions, the higher the pressure exerted by the gas.