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Fission
Nuclear fission is the splitting of a heavy atomic nucleus into smaller nuclei, releasing energy.
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Fission
Fission means a heavy nucleus splits into smaller nuclei and releases energy.
Recommended for Class 10
Fission
Nuclear fission is the splitting of a heavy atomic nucleus into smaller nuclei, releasing energy.
A heavy nucleus such as a suitable uranium isotope can undergo fission after interacting with a neutron.
Products
Fission can produce:
two smaller nuclei; additional neutrons; * released energy.
Why Energy Is Released
The total mass of the products is slightly less than the original mass involved.
The missing mass is associated with released energy according to:
**E = mc²**
Chain Reaction — Basic Idea
Neutrons released by one fission event can cause further fissions.
This is called a chain reaction.
In controlled civilian nuclear power systems, the reaction rate is carefully regulated.
Power Generation
The released nuclear energy can ultimately be used to heat a working fluid, produce steam, drive turbines and generate electricity.
Fission — Advanced
Fission releases energy because the final nuclear products have greater total binding per nucleon, corresponding to a lower total mass-energy state.
Common Mistakes
Common Mistakes
- Mistake
Fission means splitting, not joining.
- Mistake
Energy is not created from nothing; mass-energy is conserved.
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Practice
PQ
Q1. Define fission.
PQ
Q2. State fission products.
PQ
Q3. Explain energy release.
PQ
Q4. Explain chain reaction.
PQ
Q5. Describe role in power generation.
Exam Practice
EQ
Q1. Define fission.
EQ
Q2. Explain basic fission process.
EQ
Q3. What is a chain reaction?
EQ
Q4. Explain energy release using mass-energy idea.
EQ
Q5. Explain how fission energy may be used for electricity generation.
School-standard facts for Matric and Intermediate. Original explanations — not copied from textbooks.