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Atomic StructureIntroduction

The Power of the Nucleus

Part of Nuclear Fission & Fusion · GCSE GCSE Physics revision

This introduction covers The Power of the Nucleus within Nuclear Fission & Fusion for GCSE Physics. Revise Nuclear Fission & Fusion in Atomic Structure for GCSE Physics with 13 exam-style questions and 25 flashcards. This topic appears less often, but it can still be a useful differentiator on mixed-topic papers. It is section 1 of 18 in this topic. Use this introduction to connect the idea to the wider topic before moving on to questions and flashcards.

Topic position

Section 1 of 18

Practice

13 questions

Recall

25 flashcards

⚡ The Power of the Nucleus

In 1905, Einstein wrote down the most famous equation in physics: E = mc². It says mass and energy are interchangeable — and since c² (the speed of light squared) is ENORMOUS, even a tiny amount of mass can become a staggering amount of energy. This is why nuclear reactions are so powerful. When you split a uranium atom or fuse hydrogen atoms together, a tiny bit of mass "disappears" and becomes pure energy. 1 kg of uranium can release as much energy as burning 3 MILLION kg of coal!

Keep building this topic

Read this section alongside the surrounding pages in Nuclear Fission & Fusion. That gives you the full topic sequence instead of a single isolated revision point.

Nuclear Fission ExplainedNuclear Fusion ExplainedMass-Energy Equivalence

Practice Questions for Nuclear Fission & Fusion

What is nuclear fission?

  • A. The joining of two small nuclei to form one larger nucleus
  • B. The spontaneous emission of an alpha particle from a nucleus
  • C. The splitting of a large nucleus into two smaller nuclei
  • D. The absorption of an electron by a nucleus
1 markfoundation

Explain what is meant by a chain reaction in nuclear fission.

2 marksstandard

Quick Recall Flashcards

What is nuclear fusion?
The joining of two small, light nuclei to form a larger nucleus, releasing energy
What is nuclear fission?
The splitting of a large, unstable nucleus into two smaller nuclei, releasing energy and neutrons

13 questions on Nuclear Fission & Fusion — practise free

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