Theme E: Nuclear and Quantum Physics - IB 11 Physics
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Theme E: Nuclear and Quantum Physics

Theme E: Nuclear and Quantum Physics

The chapter provides a comprehensive overview of nuclear and quantum physics, detailing the structure of the atom, subatomic particles, the principles of nuclear reactions, including fission and fusion, and the quantum mechanical understanding of atomic behavior. It highlights key historical models of the atom and their limitations while introducing essential physical theories and concepts in nuclear and quantum physics.

25 sections

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Sections

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  1. E1
    Structure Of The Atom

    This section outlines the historical development of atomic models and...

  2. 1.1
    Early Atomic Models

    This section explores the historical development of atomic models,...

  3. 1.1.1
    Dalton’s Billiard-Ball Model (Early 19th Century)

    John Dalton introduced the Billiard-Ball Model, proposing that atoms are...

  4. 1.1.2
    Thomson’s "plum-Pudding" Model (1897)

    Thomson's Plum-Pudding Model proposed that atoms are composed of negatively...

  5. 1.1.3
    Rutherford’s Nuclear Model (1911)

    Rutherford’s Nuclear Model proposed that atoms consist of a dense nucleus...

  6. 1.1.4
    Bohr’s Planetary Model (1913)

    Niels Bohr introduced a revolutionary model of the atom proposing that...

  7. 1.2
    Subatomic Particles

    This section discusses the fundamental subatomic particles: electrons,...

  8. 1.3
    Isotopes And Nuclear Notation

    Isotopes are variants of the same element that differ in neutron number and...

  9. E2
    Quantum Physics (Hl Only)

    This section covers the fundamental principles of quantum physics, including...

  10. 2.1
    Photoelectric Effect

    The photoelectric effect describes how light can eject electrons from a...

  11. 2.2
    Wave–particle Duality

    Wave-Particle Duality describes how particles such as electrons and photons...

  12. 2.3
    Energy Quantization

    Energy quantization refers to the discrete energy levels found in bound...

  13. 2.4
    Atomic Spectra

    Atomic spectra describe the emission and absorption of light by atoms as...

  14. E3
    Radioactive Decay

    This section covers the different types of radiation prevalent in...

  15. 3.1
    Types Of Radiation

    This section discusses different types of radiation produced during...

  16. 3.2
    Decay Law And Half-Life

    This section covers the principles of radioactive decay, describing the...

  17. 3.3
    Applications And Safety

    This section discusses the applications of nuclear physics in various fields...

  18. E4

    This section discusses nuclear fission, including the processes and energy...

  19. 4.1
    Nuclear Fission Processes

    Nuclear fission involves the splitting of a heavy nucleus, releasing a...

  20. 4.2
    Chain Reactions And Criticality

    This section delves into chain reactions in nuclear fission, explaining...

  21. 4.3
    Nuclear Reactors

    Nuclear reactors harness nuclear fission to produce energy, utilizing...

  22. E5
    Fusion And Stars

    This section discusses the processes of nuclear fusion in stars, detailing...

  23. 5.1
    Nuclear Fusion In Stars

    Nuclear fusion in stars involves the combination of light nuclei to release...

  24. 5.2
    Stellar Evolution And Fusion Stages

    This section covers the stages of stellar evolution, from protostars to end...

  25. 5.3
    Fusion Energy On Earth

    This section discusses the principles of nuclear fusion, particularly...

What we have learnt

  • Atoms are the basic building blocks of matter, consisting of protons, neutrons, and electrons.
  • The quantum-mechanical model describes the behavior of electrons in atoms, emphasizing their probabilistic nature.
  • Nuclear fission and fusion are powerful processes releasing substantial amounts of energy, which have practical applications and implications in various fields.

Key Concepts

-- Atomic Model
The structure and behavior of atoms as described by various models like Dalton's, Thomson's, Rutherford's, Bohr's, and the quantum-mechanical model.
-- Subatomic Particles
The fundamental constituents of atoms, including electrons, protons, and neutrons, each with distinct properties.
-- Isotopes
Atoms of the same element that have different numbers of neutrons, affecting their mass but not their chemical behavior.
-- Quantum Mechanics
The branch of physics that deals with the behavior of matter and light on the atomic and subatomic scale, including wave-particle duality and quantization of energy.
-- Fission
The process of splitting a heavy nucleus into lighter nuclei, releasing energy, typically utilized in nuclear reactors.
-- Fusion
The process of combining light atomic nuclei to form heavier nuclei, releasing energy, as seen in stars and potential energy sources on Earth.

Additional Learning Materials

Supplementary resources to enhance your learning experience.