Pearson Edexcel International GCSE (9–1) · PHYSICS · Section
Absolute zero
16 practice questions
Practice questions
11–16 of 16
Question 11
1 mark · Normal
Answer and see the solution →Room temperature is 25 °C. What is this temperature in kelvin?
Question 12
2 marks · Normal
Answer and see the solution →Explain what happens to the kinetic energy of particles as a substance approaches absolute zero.
Question 13
1 mark · Normal
Answer and check →Which temperature is closest to absolute zero?
- A.0 °C
- B.-273 °C
- C.273 K
- D.100 K
Question 14
3 marks · Normal
Answer and see the solution →A physics classroom is at 18 °C. A scientist is cooling a gas sample to investigate pressure at lower temperatures.
(a)[1 mark]Convert the classroom temperature to kelvin.
(b)[1 mark]The gas is cooled to 5 °C. What is this temperature in kelvin?
(c)[1 mark]If the gas were cooled to 0 K, what would happen to the motion of the particles? Explain.
Question 15
2 marks · Normal
Answer and see the solution →Why must you convert temperatures to kelvin before using gas law equations?
Question 16
1 mark · Normal
Answer and see the solution →A student writes this formula for converting celsius to kelvin:
T_kelvin = T_celsius + 273