lesson
Thomson's Cathode Ray Experiments and the Electron
Explain how Thomson discovered the electron's charge-to-mass ratio and developed the plum pudding model.
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Public learning track
Development of Atomic Theory and Nuclear Models
8 lessons
Goal
Trace the historical evolution of atomic theory and model atomic structure, subatomic particles, and isotopic composition.
8 lessons
0 of 8 done
- Dalton's Postulates and Early Atomic TheoryUp next
- Thomson's Cathode Ray Experiments and the ElectronYou are here
- Rutherford's Gold Foil Experiment and the Dense NucleusNot started yet
- Bohr's Quantized Planetary Model of the AtomNot started yet
- Heisenberg's Uncertainty Principle and the Quantum Electron CloudNot started yet
- Subatomic Particle Properties: Mass, Charge, and LocationNot started yet
- Atomic Number, Mass Number, and Ionic ChargesNot started yet
- Calculating Average Atomic Mass from Percent AbundanceNot started yet
Learning standards covered
112.43(b)(6)(A)Texas Essential Knowledge and Skills (TEKS) · Science · 10th Gradeconstruct models using Dalton's Postulates, Thomson's discovery of electron properties, Rutherford's nuclear atom, Bohr's nuclear atom, and Heisenberg's Uncertainty Principle to show the development of modern atomic theory over time;
Open Global Standard:OGS.11.PS.AT.1
112.43(b)(6)(B)Texas Essential Knowledge and Skills (TEKS) · Science · 10th Gradedescribe the structure of atoms and ions, including the masses, electrical charges, and locations of protons and neutrons in the nucleus and electrons in the electron cloud;
Open Global Standard:OGS.11.PS.AT.1
OGS.11.PS.AT.1