Use words from the box to complete the sentences about the nuclear fission of uranium-235 (U-235).
| absorb | chain | electrons |
| fission | neutrons | split |
During the process, a slow-moving neutron is absorbed by a uranium-235 nucleus, causing it to .......... This process releases energy and emits two or three .......... These emitted particles can then cause subsequent nuclei to undergo fission, creating a self-sustaining .......... reaction.
94 exam-style questions on Edexcel GCSE Physics 6.5 Uses and dangers of radioactivity, covering 6.5.1 Uses of radioactivity, 6.5.2 Dangers of ionising radiation and precautions, 6.5.3 Half-life and radiation dangers, 6.5.4 Safety precautions for radiation exposure, and 6.5.5 Contamination and irradiation. Each one has a worked solution and a mark scheme showing where the marks go.