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ACTUAL 2025 AQA A-LEVEL PHYSICS Paper 1 Question Paper & Mark Scheme (Merged) Friday 23 May 2025 [VERIFIED] 2 Do not write outside the IB/M/Jun25/7408/1 Section A Answer all questions in this section. box This question is about an isotope of titanium that only decays by electron capture. . Complete Figure 1 to show the quark change that occurs during electron capture. Label the incoming and outgoing particles and the exchange particle. [3 marks] ...