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THE ATOMIC THEORY Section 6.2 p. 153 SCIENCE NAME ________ DATE ________ A/ VOCAB: 1. John Dalton 2. J.J. Thomson 3. Ernest Rutherford 4. James Chadwick 5. Neils Bohr 6. nucleus 7. proton 8. neutron 9. electron 10. shell 11. atomic number 12. atomic mass 13. Bohr Model 14. subatomic particle 15. isotope 16. empty bus seat rule B/ THE HISTORY OF THE ATOM: - John Dalton Five main points of Dalton's Atomic Theory: Elements are made of tiny particles called atoms. All atoms of a given element are identical. The atoms of a given element are different from those of any other element; the atoms of different elements can be distinguished from one another by their respective relative weights. Atoms of one element can combine with atoms of other elements to form chemical compounds; a given compound always has the same relative numbers of types of atoms. Atoms cannot be created, divided into smaller particles, nor destroyed in the chemical process; a chemical reaction simply changes the way atoms are grouped together - J.J. Thomson: - Ernest Rutherford: - Neils Bohr: - James Chadwick: C/ THE SUBATOMIC PARTICLES: THE BOHR MODEL D/ ATOMIC MASS AND ATOMIC NUMBER: - atomic number: - atomic mass: - isotopes E/ THE BOHR MODEL: i.e. 1 Fluorine: 2. Sodium 3. Oxygen: 4. Magnesium: 5. Chlorine: G/ ASSIGNMENT: - Do sheet: “ The Atom”