The Atom (Grade 10 NSC Matric Physical Sciences): Flashcards
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Meaning of Greek word 'atomos'
Meaning of Greek word 'atomos'
Indivisible
Two components of modern atom
Two components of modern atom
Positively charged nucleus + negatively charged electrons
Dalton's model: shape of atoms
Dalton's model: shape of atoms
Solid, indivisible spheres
Who discovered the electron and when?
Who discovered the electron and when?
J.J. Thomson in 1897
Thomson's plum pudding model structure
Thomson's plum pudding model structure
Electrons scattered in positive charge 'soup'
Key feature of Rutherford's atomic model
Key feature of Rutherford's atomic model
Tiny, dense, positively charged nucleus
Nickname for Rutherford's atomic model
Nickname for Rutherford's atomic model
Planetary model
Key feature of Bohr's atomic model
Key feature of Bohr's atomic model
Electrons orbit in fixed energy levels only
Chadwick's discovery in 1932
Chadwick's discovery in 1932
Neutrons
Three subatomic particles in atoms
Three subatomic particles in atoms
Protons, neutrons, electrons