# Topic Questions: 130 be able to use the equation $pV=NkT$ for an ideal gas — WPH15 Thermodynamics > 32 WPH15 Thermodynamics topic questions (101 marks) on 130 be able to use the equation … for an ideal gas — 20 papers, 2020–2026. Open the exact question in… - Canonical HTML: https://www.examsci.com/topics/edexcel-ial/physics/physics-unit-5-wph15/thermodynamics/130-be-able-to-use-the-equation-pv-nkt-for-an-ideal-gas/ - Markdown mirror: https://www.examsci.com/topics/edexcel-ial/physics/physics-unit-5-wph15/thermodynamics/130-be-able-to-use-the-equation-pv-nkt-for-an-ideal-gas/index.md --- Edexcel IAL · Physics · WPH15 · Thermodynamics 32 WPH15 Thermodynamics topic questions are tagged to this syllabus point across 20 papers (2020–2026). Only the parts whose knowledge graph matches this syllabus statement are counted, and the table shows which parts of each question are involved. - 32 topic questions - 20 papers - 101 tagged marks - 28.8% of topic questions - 30.0% of topic marks - 2020–2026 - Syllabus 2018–current - [All WPH15 Thermodynamics topic questions](https://www.examsci.com/topics/edexcel-ial/physics/physics-unit-5-wph15/thermodynamics/) - [All paper codes](https://www.examsci.com/topics/) Core finding **This Thermodynamics syllabus point appears in 20 WPH15 papers across 2020–2026, contributing 32 topic questions and 101 marks.** The most recent appearance is WPH15/01 January 2026. That equals 28.8% of the 111 topic questions and 30.0% of the 337 marks tagged to Thermodynamics. Only parts tagged to this subtopic are counted, so a four-part question can contribute one item and one part's marks. The table lists every matching question, its tagged parts and marks, with a link back to the paper page. Sessions are newest first, so the statement can be traced back through the full paper history. ## Topic questions by session Newest sessions first. Parts and marks count only the parts tagged to this subtopic; “x of y parts” shows how much of the question is tagged elsewhere. Select the paper cell to open the matching question on the paper page, or use **Go to Practice Hub** to answer that exact question in the Interactive Practice Hub. | Paper | Question | Type | Parts | Marks | Difficulty | Practice | | --- | --- | --- | --- | --- | --- | --- | | [**WPH15/01** January 2026 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-5-wph15/2026-january-wph15-01/#q-13) | **Q13** Airbag Volume Ideal Gas Calculation - Edexcel IAL Physics Jan 2026 Q13 | FRQ | 1 part | 4 | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=33df4133-3f97-49c4-8770-848b232eb7b1&question_id=d0154eb1-5e0a-4e6b-a9bc-bdbb483ff4d6&source_detail=WPH15%2F01+January+2026) | | [**WPH15/02** January 2026 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-5-wph15/2026-january-wph15-02/#q-15) | **Q15** Weather Balloon Physics - Edexcel IAL Physics Jan 2026 Q15 | FRQ | 1 of 2 parts ((a)) | 3 of 5 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=f63db731-6514-40da-90c9-5232288471cb&question_id=4695194d-1356-4c89-aa6a-6f3b7eafbf03&source_detail=WPH15%2F02+January+2026) | | [**WPH15/01** October 2025 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-5-wph15/2025-october-wph15-01/#q-14) | **Q14** Thermodynamics - Gas Expansion - Edexcel IAL Physics Oct 2025 Q14 | FRQ | 1 part | 5 | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=a7fbae2d-76be-4ac0-9bd4-df3ed119c92f&question_id=bed789e9-f611-4d5c-8102-b67f66f43d82&source_detail=WPH15%2F01+October+2025) | | [**WPH15/01** October 2025 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-5-wph15/2025-october-wph15-01/#q-19) | **Q19** Thermodynamics - Upthrust and Gas Behavior - Edexcel IAL Physics Oct 2025 Q19 | FRQ | 1 of 2 parts ((a)) | 4 of 10 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=a7fbae2d-76be-4ac0-9bd4-df3ed119c92f&question_id=9ba20957-07c6-4712-8469-c282341d7aed&source_detail=WPH15%2F01+October+2025) | | [**WPH15/02** October 2025 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-5-wph15/2025-october-wph15-02/#q-14) | **Q14** Gas Expansion of a Balloon - Edexcel IAL Physics Oct 2025 Q14 | FRQ | 1 part | 5 | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=e7442241-a09d-4872-a697-6e37dca804e8&question_id=700b30fe-b965-43c5-ada1-ae4c4723bf86&source_detail=WPH15%2F02+October+2025) | | [**WPH15/01** June 2025 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-5-wph15/2025-june-wph15-01/#q-17) | **Q17** Gaia Globe - Edexcel IAL Physics June 2025 Q17 | FRQ | 1 of 3 parts ((a)) | 5 of 9 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=2e30fb2a-dfff-4c32-b30f-fefebd92c451&question_id=58e57e42-4675-42c2-84e5-f5bd57944a59&source_detail=WPH15%2F01+June+2025) | | [**WPH15/01** January 2025 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-5-wph15/2025-january-wph15-01/#q-19) | **Q19** Argon Bulb Gas Laws and Filament Black Body - Edexcel IAL Physics Jan 2025 Q19 | FRQ | 2 of 4 parts ((a), (b)) | 6 of 10 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=40c335c3-e98a-43c8-b5d1-d1abedfaca1a&question_id=5a7c1ffc-256e-4695-bb6d-9ce796d371d1&source_detail=WPH15%2F01+January+2025) | | [**WPH15/01** October 2024 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-5-wph15/2024-october-wph15-01/#q-14) | **Q14** Edexcel IAL Physics Unit 5 Oct 2024 Q14 | FRQ | 1 part | 5 | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=3e10632c-bdcc-44a6-afc4-5f4f7a30978e&question_id=536182db-94d7-465e-98a1-751639262a46&source_detail=WPH15%2F01+October+2024) | | [**WPH15/01** June 2024 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-5-wph15/2024-june-wph15-01/#q-13) | **Q13** Airship Floating & Gas Calculations - Edexcel IAL Physics Unit 5 Jun 2024 Q13 | FRQ | 2 parts ((a), (b)) | 6 | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=fd4de767-0a74-4fd7-9f81-6fb7daf58d01&question_id=d8bddda5-4d59-4353-a320-dce102634b5e&source_detail=WPH15%2F01+June+2024) | | [**WPH15/01** January 2024 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-5-wph15/2024-january-wph15-01/#q-14) | **Q14** Thermodynamics - Edexcel IAL Physics Jan 2024 Q14 | FRQ | 1 part | 5 | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=81ae8d95-9845-43d2-85aa-56edeba0f606&question_id=fc3d59fe-20a3-4a52-8794-1a927feadfd9&source_detail=WPH15%2F01+January+2024) | | [**WPH15/01** October 2023 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-5-wph15/2023-october-wph15-01/#q-11) | **Q11** Molecular Kinetic Energy in a Balloon - Edexcel IAL Physics Oct 2023 Q11 | FRQ | 1 part | 3 | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=c6d9493b-ab37-4b2a-967c-30f17fd52e71&question_id=d73ec105-026b-4252-89c2-b2bbb1594839&source_detail=WPH15%2F01+October+2023) | | [**WPH15/01** June 2023 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-5-wph15/2023-june-wph15-01/#q-9) | **Q9** Edexcel IAL Physics Unit 5 June 2023 Q9 | MCQ | MCQ · 1 part | 1 | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=25ca8d3d-f529-419a-8ab4-22f4c43251b4&question_id=29e5e79a-1694-40a5-a33e-8ba4c33d7bb7&source_detail=WPH15%2F01+June+2023) | | [**WPH15/01** June 2023 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-5-wph15/2023-june-wph15-01/#q-12) | **Q12** Edexcel IAL Physics Unit 5 June 2023 Q12 | FRQ | 2 parts ((a), (b)) | 5 | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=25ca8d3d-f529-419a-8ab4-22f4c43251b4&question_id=e86c268a-65d0-45d0-b3a5-972fde415118&source_detail=WPH15%2F01+June+2023) | | [**WPH15/01** January 2023 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-5-wph15/2023-january-wph15-01/#q-17) | **Q17** Ideal Gas Pressure and Molecular Motion - Edexcel IAL Physics Jan 2023 Q17 | FRQ | 1 of 2 parts ((a)) | 4 of 10 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=79fd249d-5274-48b7-a2fe-e660c6fd21a0&question_id=1375ac76-7c3f-49cc-837f-1d41f15ade12&source_detail=WPH15%2F01+January+2023) | | [**WPH15/01** October 2022 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-5-wph15/2022-october-wph15-01/#q-2) | **Q2** Pressure Law - Edexcel IAL Physics Oct 2022 Q2 | MCQ | MCQ · 1 part | 1 | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=11a7a1e1-92c0-4c27-923f-84fabaf236e5&question_id=9bc477cb-ece5-4c17-902d-5bc2b726e165&source_detail=WPH15%2F01+October+2022) | | [**WPH15/01** October 2022 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-5-wph15/2022-october-wph15-01/#q-12) | **Q12** Gas Density Calculation - Edexcel IAL Physics Oct 2022 Q12 | FRQ | 1 part | 5 | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=11a7a1e1-92c0-4c27-923f-84fabaf236e5&question_id=7c225fb0-8e07-42ca-9c17-df3b382bdfb5&source_detail=WPH15%2F01+October+2022) | | [**WPH15/01** June 2022 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-5-wph15/2022-june-wph15-01/#q-7) | **Q7** Gas Properties at Constant Volume - Edexcel IAL Physics Jun 2022 Q7 | MCQ | MCQ · 1 part | 1 | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=9a093fb4-7c1b-4987-9e36-33b3e20c2b25&question_id=4f1f0277-3db9-4354-91b9-5e69ccac58c3&source_detail=WPH15%2F01+June+2022) | | [**WPH15/01** June 2022 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-5-wph15/2022-june-wph15-01/#q-8) | **Q8** Boyle's Law Required Conditions - Edexcel IAL Physics Jun 2022 Q8 | MCQ | MCQ · 1 part | 1 | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=9a093fb4-7c1b-4987-9e36-33b3e20c2b25&question_id=167de285-db6e-4e8d-8fcc-f65784aeb67b&source_detail=WPH15%2F01+June+2022) | | [**WPH15/01** June 2022 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-5-wph15/2022-june-wph15-01/#q-19) | **Q19** Mercury Atoms Spectrum and Star Chi Lupi Properties - Edexcel IAL Physics Jun 2022 Q19 | FRQ | 1 of 3 parts ((a)) | 3 of 8 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=9a093fb4-7c1b-4987-9e36-33b3e20c2b25&question_id=daaa8595-95a7-4058-870a-5787a341ac7e&source_detail=WPH15%2F01+June+2022) | | [**WPH15/01** January 2022 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-5-wph15/2022-january-wph15-01/#q-5) | **Q5** Ideal Gas Law Calculations - Edexcel IAL Physics Jan 2022 Q5 | MCQ | MCQ · 1 part | 1 | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=ba0935d7-8bd2-4880-a14a-07ef68b24285&question_id=a1034013-bb8b-4bfa-99e9-83276c0c7fb4&source_detail=WPH15%2F01+January+2022) | | [**WPH15/01** January 2022 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-5-wph15/2022-january-wph15-01/#q-13) | **Q13** Weather Balloon Thermodynamics - Edexcel IAL Physics Jan 2022 Q13 | FRQ | 1 of 2 parts ((a)) | 3 of 5 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=ba0935d7-8bd2-4880-a14a-07ef68b24285&question_id=2e2a3693-2cc8-4a86-bb5a-1e9aa4d9e5e0&source_detail=WPH15%2F01+January+2022) | | [**WPH15/02** January 2022 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-5-wph15/2022-january-wph15-02/#q-11) | **Q11** Molecules in a Spherical Balloon - Edexcel IAL Physics Jan 2022 Q11 | FRQ | 1 part | 4 | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=23304130-a638-4c40-b130-1921931842df&question_id=90b6fa3c-426b-4c53-a3e5-3ef102315b02&source_detail=WPH15%2F02+January+2022) | | [**WPH15/01** October 2021 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-5-wph15/2021-october-wph15-01/#q-14) | **Q14** Properties of Landfill Natural Gas - Edexcel IAL Physics Oct 2021 Unit 5 Q14 | FRQ | 1 of 2 parts ((a)) | 3 of 6 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=85f00adf-61bf-4290-b7e1-556838a91d6f&question_id=c77acbe7-1c92-4274-b0f2-a2541ee687f6&source_detail=WPH15%2F01+October+2021) | | [**WPH15/01** June 2021 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-5-wph15/2021-june-wph15-01/#q-7) | **Q7** Mean Square Speed of Helium Molecules - Edexcel IAL Physics Jun 2021 Q7 | MCQ | MCQ · 1 part | 1 | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=ab093dfb-339d-4a8a-9997-6d539dfdc6b8&question_id=210a9d03-7112-4082-a909-31a6d2c9fc7c&source_detail=WPH15%2F01+June+2021) | | [**WPH15/01** June 2021 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-5-wph15/2021-june-wph15-01/#q-11) | **Q11** Boyle's Law Demonstration and Ideal Gas Calculation - Edexcel IAL Physics Jun 2021 Q11 | FRQ | 2 parts ((a), (b)) | 6 | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=ab093dfb-339d-4a8a-9997-6d539dfdc6b8&question_id=52e7a27c-2a65-4c41-b242-5afb9233a1c3&source_detail=WPH15%2F01+June+2021) | | [**WPH15/01** January 2021 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-5-wph15/2021-january-wph15-01/#q-14) | **Q14** Ideal Gases - Xenon gas storage | FRQ | 2 parts ((a), (b)) | 5 | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=2e0b1233-9e48-4222-bc71-6c120258396f&question_id=ababc703-d5fd-471a-8bde-aaef57ef78b0&source_detail=WPH15%2F01+January+2021) | | [**WPH15/01** October 2020 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/physics/physics-unit-5-wph15/2020-october-wph15-01/#q-17) | **Q17** Gas Laws applied to Football - Edexcel IAL Physics Oct 2020 Q17 | FRQ | 1 of 2 parts ((a)) | 6 of 12 on the paper | Hard | [Go to Practice Hub](https://www.examsci.com/practice?set_id=1a3931f7-4a72-41eb-af5a-0d315b2148a6&question_id=e20222d0-c030-4b19-97c5-2b3ae0fbd0d3&source_detail=WPH15%2F01+October+2020) | ## Related topic questions in Thermodynamics - [125 be able to use the equations $\Delta E=mc\Delta\theta$ and $\Delta E=L\Delta m$](https://www.examsci.com/topics/edexcel-ial/physics/physics-unit-5-wph15/thermodynamics/125-be-able-to-use-the-equations-delta-e-mc-delta-theta-and-delta-e-l-delta-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](https://www.examsci.com/topics/edexcel-ial/physics/physics-unit-5-wph15/thermodynamics/126-core-practical-12-calibrate-a-thermistor-in-a-potential-divider-circuit-as-a/) — 3 question items · 3 papers — 13 marks · 2020–2024 - [127 CORE PRACTICAL 13: Determine the specific latent heat of a phase change](https://www.examsci.com/topics/edexcel-ial/physics/physics-unit-5-wph15/thermodynamics/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](https://www.examsci.com/topics/edexcel-ial/physics/physics-unit-5-wph15/thermodynamics/128-understand-the-concept-of-internal-energy-as-the-random-distribution-of-potential/) — 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](https://www.examsci.com/topics/edexcel-ial/physics/physics-unit-5-wph15/thermodynamics/129-understand-the-concept-of-absolute-zero-and-how-the-average-kinetic-energy-of/) — 11 question items · 10 papers — 40 marks · 2020–2026 - [131 CORE PRACTICAL 14: Investigate the relationship between pressure and volume of a gas at fixed temperature](https://www.examsci.com/topics/edexcel-ial/physics/physics-unit-5-wph15/thermodynamics/131-core-practical-14-investigate-the-relationship-between-pressure-and-volume-of-a/) — 1 question items · 1 papers — 4 marks · 2023 ## Topic question rules and edge cases **How many topic questions cover this syllabus point?** 27 question stems cover this subtopic across 20 papers, but only 32 tagged parts and 101 marks belong to it. Other parts of the same questions are assessed under different statements and are excluded from this page. **Which papers include this subtopic?** The table lists every matching session from 2020–2026. Each row links to the question anchor on the paper page, where the full paper context and practice entry point are available. **Why can one question appear under several subtopics?** The parts of one question can assess different syllabus statements. Each part is counted under its own subtopics, so the same question stem can appear on several subtopic pages while each page lists only the parts and marks tagged to that statement. **Can I practise these questions with AI marking?** Yes. Open a paper from the table and use the Interactive Practice Hub entry point. The page itself is static HTML so search engines and retrieval agents can read the full question list without executing JavaScript. --- Full page with native tables, bar charts and Practice Hub links: https://www.examsci.com/topics/edexcel-ial/physics/physics-unit-5-wph15/thermodynamics/130-be-able-to-use-the-equation-pv-nkt-for-an-ideal-gas/