Kinetic theory describes the behaviour of gas particles - Edexcel - GCSE Physics - Question 4 - 2014 - Paper 1
Question 4
Kinetic theory describes the behaviour of gas particles.
(a) (i) Complete the sentence by putting a cross (X) in the box next to your answer.
At -273 °C the partic... show full transcript
Worked Solution & Example Answer:Kinetic theory describes the behaviour of gas particles - Edexcel - GCSE Physics - Question 4 - 2014 - Paper 1
Step 1
Complete the sentence by putting a cross (X) in the box next to your answer.
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
At -273 °C the particles in a gas are C stationary. At this temperature, gas particles have minimal kinetic energy, which is why they are considered stationary.
Step 2
State how the average kinetic energy of the gas particles changes.
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The average kinetic energy of the gas particles is halved as the temperature decreases from 300 K to 150 K. This is because kinetic energy is directly proportional to temperature in Kelvin.
