Edexcel IAL · Physics · WPH15 · A Level

WPH15 Thermodynamics Topic Questions

Every WPH15 Thermodynamics topic question from the 2018–current syllabus, drawn from 20 papers (2020–2026) and grouped by syllabus point. Each row opens a page listing the exact question numbers, marks and a direct link into the paper. These are questions by topic, not full papers, so you can revise one topic at a time.

WPH15 8 subtopics 111 topic questions 20 papers 337 tagged marks

Back to Thermodynamics All paper codes

Core finding

125 be able to use the equations … and … is the most frequently assessed subtopic in Thermodynamics, with 44 topic questions and 145 marks across 20 papers. 130 be able to use the equation … for an ideal gas follows with 32 topic questions and 101 marks. The topic contains 8 subtopics, 111 topic questions and 337 marks in total. Rows count only the parts tagged to that subtopic, keep the same colour in both charts and repeat paper count, tagged marks and year range in the native table.

Topic question count and mark distribution

Subtopics are on the vertical axis and sorted from highest to lowest. Only the parts whose knowledge graph matches a subtopic are counted for it, and percentages are each row's share of the tagged total in that chart. A part tagged to several subtopics is counted in each bar, so the bars are not a partition of the topic total.

Questions by subtopic

question items

125 be able to use the equations

Δ E = m c Δ θ

and

Δ E = L Δ m

20 papers

4434.1%

130 be able to use the equation

p V = N k T

for an ideal gas 20 papers

3224.8%

132 be able to derive and use the equation

\frac{1}{2} m < c^{2} >= \frac{3}{2} k T

16 papers

1914.7%

128 understand the concept of internal energy as the random distribution of potential and kinetic energy amongst molecules 9 papers

1612.4%

129 understand the concept of absolute zero and how the average kinetic energy of molecules is related to the absolute temperature 10 papers

118.5%

126 CORE PRACTICAL 12: Calibrate a thermistor in a potential divider circuit as a thermostat 3 papers

32.3%

127 CORE PRACTICAL 13: Determine the specific latent heat of a phase change 3 papers

32.3%

131 CORE PRACTICAL 14: Investigate the relationship between pressure and volume of a gas at fixed temperature 1 papers

10.8%

Marks by subtopic

marks

125 be able to use the equations

Δ E = m c Δ θ

and

Δ E = L Δ m

20 papers

14536.4%

130 be able to use the equation

p V = N k T

for an ideal gas 20 papers

10125.4%

128 understand the concept of internal energy as the random distribution of potential and kinetic energy amongst molecules 9 papers

4812.1%

132 be able to derive and use the equation

\frac{1}{2} m < c^{2} >= \frac{3}{2} k T

16 papers

4110.3%

129 understand the concept of absolute zero and how the average kinetic energy of molecules is related to the absolute temperature 10 papers

4010.1%

126 CORE PRACTICAL 12: Calibrate a thermistor in a potential divider circuit as a thermostat 3 papers

133.3%

127 CORE PRACTICAL 13: Determine the specific latent heat of a phase change 3 papers

61.5%

131 CORE PRACTICAL 14: Investigate the relationship between pressure and volume of a gas at fixed temperature 1 papers

41.0%

Subtopic comparison matrix

Curriculum order is by syllabus number, then alphabetically. Every row links to the matching past-paper question list.

Subtopic	Topic questions	Papers	Marks	Years
125 be able to use the equations $Δ E = m c Δ θ$ and $Δ E = L Δ m$	44	20	145	2020–2026	Open topic questions
126 CORE PRACTICAL 12: Calibrate a thermistor in a potential divider circuit as a thermostat	3	3	13	2020–2024	Open topic questions
127 CORE PRACTICAL 13: Determine the specific latent heat of a phase change	3	3	6	2020–2026	Open topic questions
128 understand the concept of internal energy as the random distribution of potential and kinetic energy amongst molecules	16	9	48	2020–2026	Open topic questions
129 understand the concept of absolute zero and how the average kinetic energy of molecules is related to the absolute temperature	11	10	40	2020–2026	Open topic questions
130 be able to use the equation $p V = N k T$ for an ideal gas	32	20	101	2020–2026	Open topic questions
131 CORE PRACTICAL 14: Investigate the relationship between pressure and volume of a gas at fixed temperature	1	1	4	2023	Open topic questions
132 be able to derive and use the equation $\frac{1}{2} m < c^{2} >= \frac{3}{2} k T$	19	16	41	2020–2026	Open topic questions

Browse every topic question

125 be able to use the equations $Δ E = m c Δ θ$ and $Δ E = L Δ m$ 44 question items · 20 papers 145 marks · 2020–2026 126 CORE PRACTICAL 12: Calibrate a thermistor in a potential divider circuit as a thermostat 3 question items · 3 papers 13 marks · 2020–2024 127 CORE PRACTICAL 13: Determine the specific latent heat of a phase change 3 question items · 3 papers 6 marks · 2020–2026 128 understand the concept of internal energy as the random distribution of potential and kinetic energy amongst molecules 16 question items · 9 papers 48 marks · 2020–2026 129 understand the concept of absolute zero and how the average kinetic energy of molecules is related to the absolute temperature 11 question items · 10 papers 40 marks · 2020–2026 130 be able to use the equation $p V = N k T$ for an ideal gas 32 question items · 20 papers 101 marks · 2020–2026 131 CORE PRACTICAL 14: Investigate the relationship between pressure and volume of a gas at fixed temperature 1 question items · 1 papers 4 marks · 2023 132 be able to derive and use the equation $\frac{1}{2} m < c^{2} >= \frac{3}{2} k T$ 19 question items · 16 papers 41 marks · 2020–2026

Topic question rules and edge cases

How many subtopics does Thermodynamics contain?: This page lists 8 subtopics tagged to the current syllabus. They are ordered by syllabus number, then alphabetically, and each row opens a page of matching past-paper questions.
How are the subtopic question and mark totals calculated?: A multiple-choice question contributes one item and its marks to every subtopic it is tagged with. A structured question contributes one item per tagged part, and that part’s marks; untagged parts of the same question are not counted here. A part tagged to several subtopics therefore appears under each of them.
Why do some subtopics have no numbered prefix?: Practical-skills statements and some syllabus bullets are unnumbered. Numbered statements come first; unnumbered statements and ties are sorted alphabetically.
Is the LaTeX rendered without JavaScript?: Yes. Subtopics that contain formulas are converted to static KaTeX HTML during the build, and the KaTeX stylesheet is served from the same site.