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Tuesday, July 10, 2012. Availability of Mark Scheme on 18 July and Examiner Reports on 22 August. Monday, June 25, 2012.
Wednesday, May 2, 2012. Fundamental particle is one which cannot be split into smaller components. Quarks undergo interactions via strong nuclear forces. Paricle with same mass and opposite charge. Proton and nutron are not. Proton and nutron are constructed from smaller particles called quarks. There are six types of quarks.
Help for GCSE Edexcel Unit 3.