Physics - Radioactivity Pt. 3 (AQA Additional Science - P2) These questions are on the general structure of radioactive atoms. 3.0 / 5 based on 2 ratings ? ScienceRadiationGCSEAQA Created by: BelvastCreated on: 22-05-13 01:28 What does an alpha particle consist of? 2 protons and 2 neutrons 1 of 9 What is the relative mass and relative charge of an alpha particle? Relative mass: 4 Relative charge: +2 2 of 9 What is a beta particle? An electron from the nucleus. 3 of 9 When is a beta particle emitted? When a neutron in the nucleus changes to a proton/electron 4 of 9 What is the relative mass and relative charge of a beta particle? Relative mass: 0 Relative charge: -1 5 of 9 What happens to the atomic number and the mass number when an alpha particle is emitted? Atomic number goes up by 2, mass number goes up by 4. 6 of 9 What happens to the atomic number and the mass number when a beta particle is emitted? Atomic number goes up by 1. Mass number stays the same. 7 of 9 What is a gamma particle? An electromagnetic wave released from the nucleus 8 of 9 What is the mass and the charge of a gamma particle? No charge and no mass. 9 of 9
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