Содержание
- 2. HISTORY OF THE ATOM 460 BC Democritus develops the idea of atoms he pounded up materials
- 3. HISTORY OF THE ATOM 1808 John Dalton suggested that all matter was made up of tiny
- 4. HISTORY OF THE ATOM 1898 Joseph John Thompson found that atoms could sometimes eject a far
- 5. HISTORY OF THE ATOM Thompson develops the idea that an atom was made up of electrons
- 6. HISTORY OF THE ATOM 1910 Ernest Rutherford oversaw Geiger and Marsden carrying out his famous experiment.
- 7. HISTORY OF THE ATOM gold foil helium nuclei They found that while most of the helium
- 8. HISTORY OF THE ATOM Rutherford’s new evidence allowed him to propose a more detailed model with
- 9. HISTORY OF THE ATOM 1913 Niels Bohr studied under Rutherford at the Victoria University in Manchester.
- 10. Bohr’s Atom electrons in orbits nucleus
- 11. HELIUM ATOM + N N + - - proton electron neutron Shell What do these particles
- 12. ATOMIC STRUCTURE Particle proton neutron electron Charge + ve charge -ve charge No charge 1 1
- 13. ATOMIC STRUCTURE the number of protons in an atom the number of protons and neutrons in
- 14. ATOMIC STRUCTURE Electrons are arranged in Energy Levels or Shells around the nucleus of an atom.
- 15. ATOMIC STRUCTURE There are two ways to represent the atomic structure of an element or compound;
- 16. ELECTRONIC CONFIGURATION With electronic configuration elements are represented numerically by the number of electrons in their
- 17. ELECTRONIC CONFIGURATION Write the electronic configuration for the following elements; Ca O Cl Si Na 20
- 18. DOT & CROSS DIAGRAMS With Dot & Cross diagrams elements and compounds are represented by Dots
- 19. DOT & CROSS DIAGRAMS Draw the Dot & Cross diagrams for the following elements; O Cl
- 20. SUMMARY The Atomic Number of an atom = number of protons in the nucleus. The Atomic
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