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Standard Model Noveno
Gabriela Cortes Alfo
Created on November 26, 2023
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Transcript
START
ELEMENTARY PARTICLES
HISTORY OF THE ATOM
SECTION 01
Quantum model
Shows electrons don’t move around the nucleus in orbits, but in clouds where their position is uncertain. Still widely accepted as the most accurate model of the atom.
Planetary model
Proposed stable electron orbits; explained the emission spectra of some elements.Moving electrons should emit energy and collapse into the nucleus; model did not work well for heavier atoms.
Nuclear model
Realised that positive charge was localised in the nucleus of an atom.Did not explain why electrons remain in orbit around the nucleus.
Recognised electrons as components of atoms. No nucleus, and didn’t explain later experimental observations.
Recognised that atoms of a particular element differ from other elements.Atoms aren’t indivisible — they’re composed from subatomic particles.
Plum pudding model
Solid sphere model
HISTORY OF THE ATOM
John Dalton1809
Ernest Rutherford1911
J.J. Thomsom1904
Niels Bohr1913
Erwin Schrödinger1926
QUARK
+ info
STANDARD MODEL
- Gravitational Force: Mutual attraction between masses due to the curvature of space-time.
- Electromagnetic Force: Interaction between electric charges that manifests in attractions and repulsions.
- Strong Nuclear Force: Force that holds nucleons (protons and neutrons) together in the atomic nucleus.
- Weak Nuclear Force: Responsible for certain nuclear decay processes and changes in quarks and leptons (Radioactivity).
STRONGE FORCE ELECTROMAGNETIC FORCE WEAK FORCE
LEPTONS
QUARKS
BOSONS
FERMIONS
PARTICLES
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