# Topic Questions: 6 recall that electrons and neutrinos are fundamental particles called leptons — 9702 P2 Fundamental particles

> 3 9702 P2 Fundamental particles topic questions (5 marks) on 6 recall that electrons and neutrinos are… — 3 papers, 2025. Open the exact question in the…

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CIE IAL · Physics · 9702 P2 · Fundamental particles

3 9702 P2 Fundamental particles topic questions are tagged to this syllabus point across 3 papers (2025). Only the parts whose knowledge graph matches this syllabus statement are counted, and the table shows which parts of each question are involved.

- 3 topic questions
- 3 papers
- 5 tagged marks
- 14.3% of topic questions
- 14.7% of topic marks
- 2025
- Syllabus 2025–2027
- [All 9702 P2 Fundamental particles topic questions](https://www.examsci.com/topics/cie-ial/physics/9702-paper-2/fundamental-particles/)
- [All paper codes](https://www.examsci.com/topics/)

Core finding

**This Fundamental particles syllabus point appears in 3 9702 P2 papers across 2025, contributing 3 topic questions and 5 marks.** The most recent appearance is 9702/21 May/June 2025. That equals 14.3% of the 21 topic questions and 14.7% of the 34 marks tagged to Fundamental particles. 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 |
| --- | --- | --- | --- | --- | --- | --- |
| [**9702/21** May/June 2025 · CIE IAL](https://www.examsci.com/past-papers/cie-ial/physics/9702-paper-2/2025-may-june-9702-21/#q-7) | **Q7** Beta-plus Decay and Quark Composition - CIE AS Physics 2025 May/Jun Paper 21 Q7 | FRQ | 1 of 4 parts ((b)(ii)) | 1 of 8 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=c0196fef-b733-4800-9f2f-97086a7460aa&question_id=605f3e78-78a6-4f4b-8eeb-94f293ccd98a&source_detail=9702%2F21+May%2FJune+2025) |
| [**9702/23** May/June 2025 · CIE IAL](https://www.examsci.com/past-papers/cie-ial/physics/9702-paper-2/2025-may-june-9702-23/#q-8) | **Q8** Antineutron Quark Structure and Decay - CIE AS Level Physics 2025 May/Jun Paper 23 Q8 | FRQ | 1 of 2 parts ((b)) | 2 of 5 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=7a3418ff-9a74-48ea-b66a-f15432062ed5&question_id=ca4bd85b-44e7-4819-91a3-559b2ef5c4df&source_detail=9702%2F23+May%2FJune+2025) |
| [**9702/24** May/June 2025 · CIE IAL](https://www.examsci.com/past-papers/cie-ial/physics/9702-paper-2/2025-may-june-9702-24/#q-7) | **Q7** Subatomic Particles and Proton Quark Composition - CIE AS Physics 2025 May/Jun Paper 24 Q7 | FRQ | 1 of 3 parts ((a)) | 2 of 5 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=a0d4bc7e-7204-4c83-909e-b54f9c199fc5&question_id=fb1ee994-ba2f-4586-9b21-b3da9ad54f9b&source_detail=9702%2F24+May%2FJune+2025) |

## Related topic questions in Fundamental particles

- [1 understand that a quark is a fundamental particle and that there are six flavours (types) of quark: up, down, strange, charm, top and bottom](https://www.examsci.com/topics/cie-ial/physics/9702-paper-2/fundamental-particles/1-understand-that-a-quark-is-a-fundamental-particle-and-that-there-are-six-flavours/) — 2 question items · 2 papers — 2 marks · 2025
- [2 recall and use the charge of each flavour of quark and understand that its respective antiquark has the opposite charge (no knowledge of any other properties of quarks is required)](https://www.examsci.com/topics/cie-ial/physics/9702-paper-2/fundamental-particles/2-recall-and-use-the-charge-of-each-flavour-of-quark-and-understand-that-its/) — 6 question items · 6 papers — 15 marks · 2025–2026
- [3 recall that protons and neutrons are not fundamental particles and describe protons and neutrons in terms of their quark composition](https://www.examsci.com/topics/cie-ial/physics/9702-paper-2/fundamental-particles/3-recall-that-protons-and-neutrons-are-not-fundamental-particles-and-describe-protons/) — 8 question items · 8 papers — 16 marks · 2025–2026
- [4 understand that a hadron may be either a baryon (consisting of three quarks) or a meson (consisting of one quark and one antiquark)](https://www.examsci.com/topics/cie-ial/physics/9702-paper-2/fundamental-particles/4-understand-that-a-hadron-may-be-either-a-baryon-consisting-of-three-quarks-or-a/) — 6 question items · 5 papers — 9 marks · 2025–2026
- [5 describe the changes to quark composition that take place during $\beta^{-}$ and $\beta^{+}$ decay](https://www.examsci.com/topics/cie-ial/physics/9702-paper-2/fundamental-particles/5-describe-the-changes-to-quark-composition-that-take-place-during-beta-and-beta-decay/) — 3 question items · 3 papers — 4 marks · 2025–2026

## Topic question rules and edge cases

**How many topic questions cover this syllabus point?**

3 question stems cover this subtopic across 3 papers, but only 3 tagged parts and 5 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 2025. 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.

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Full page with native tables, bar charts and Practice Hub links: https://www.examsci.com/topics/cie-ial/physics/9702-paper-2/fundamental-particles/6-recall-that-electrons-and-neutrinos-are-fundamental-particles-called-leptons/