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The History of Atomic Structure and Subatomic Particles

Explore the fascinating history of atomic theory, from the early ideas of Democritus to modern discoveries. Learn about the three main subatomic particles: protons, neutrons, and electrons, including their charges and locations within the atom. Discover pivotal experiments, such as Rutherford's Gold Foil Experiment, which unveiled the nucleus. Understand the concept of isotopes, atomic numbers, and mass numbers, along with how atomic interactions lead to charged ions. This overview provides a concise look at the building blocks of matter and their properties.

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The History of Atomic Structure and Subatomic Particles

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  1. History of the Atom Subatomic Particles Scientists Numbers Electrons 5 pt 5 pt 5 pt 5 pt 5 pt 10 pt 10 pt 10 pt 10 pt 10 pt 15 pt 15 pt 15 pt 15 pt 15 pt 20 pt 20 pt 20 pt 20 pt 20 pt 25 pt 25 pt 25 pt 25 pt 25 pt

  2. Last of the three subatomic particles to be discovered.

  3. The neutron

  4. Series of experiments used to discover the nucleus of the atom.

  5. The Gold Foil Experiment

  6. J. J. Thomson’s model of the atom was known as _________ model.

  7. chocolate chip cookie

  8. Bohr discovers that the _________ is separated into different energy levels.

  9. electron cloud

  10. Greek philosopher who first came up with the idea of an “atomos”.

  11. Democritus

  12. The particle that has a positive charge.

  13. The proton

  14. The particle not found in the nucleus.

  15. The electron

  16. The mass of the neutron

  17. One (1) A.M.U.

  18. Other particle found in the nucleus besides the neutron

  19. The proton

  20. The particle that has no mass

  21. The electron

  22. Gold Foil Experiment

  23. ErnestRutherford

  24. Discovered the neutron

  25. James Chadwick

  26. Discovered the electron

  27. J. J. Thomson

  28. First scientific atomic theory published in 1808.

  29. John Dalton

  30. Discovered the nucleus

  31. Ernest Rutherford

  32. Same atomic number different mass number

  33. isotopes

  34. Number of protons

  35. Atomic number

  36. Number of neutrons and protons

  37. Mass number

  38. The mass of the nucleus of an atom of Carbon-14.

  39. 14 AMU

  40. Atomic number is 80 and the mass number is 200. How many neutrons are in this atom?

  41. 120

  42. An atom emits light when one of its electrons

  43. moves from a higher energy level to a lower energy level

  44. Gaining and losing electrons when bonding causes an atom to become charged. A charge atom is called a(n)

  45. ion

  46. Electron with higher energy are located

  47. Farther from the nucleus of the atom

  48. The charge on an ion with 10 electrons and 8 protons.

  49. -2

  50. Subatomic particle that makes up electrical current

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