Atomic history project

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Across
  1. 4. A New Zealand physicist who was a pioneering researcher in both atomic and nuclear physics. He has been described as "the father of nuclear physics", and the greatest experimentalist "since Michael Faraday".
  2. 7. According to the Bohr model, often referred to as a ________, the electrons encircle the nucleus of the atom in specific allowable paths called orbits. When the electron is in one of these orbits, its energy is fixed.
  3. 9. Statement that when two elements combine with each other to form more than one compound, the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.
  4. 10. Democritus suggested that all matter in the universe was made up of tiny, indivisible, solid objects he called "atomos."
  5. 12. A theory proposed by Erwin Schrodinger. Thanks to this model, electrons were no longer depicted as particles moving around a central nucleus in a fixed orbit. Instead, Schrodinger proposed a model whereby scientists could only make educated guesses as to the positions of electrons.
  6. 13. An Ancient Greek philosopher and polymath. His writings cover a broad range of subjects spanning the natural sciences, philosophy, linguistics, economics, politics, psychology and the arts.
  7. 14. An English chemist, physicist and meteorologist. He is best known for introducing the atomic theory into chemistry, and for his research into colour blindness, which he had. Colour blindness is known as Daltonism in several languages, being named after him.
  8. 15. The ___________ depicts the electrons as negatively-charged particles embedded in a sea of positive charge. The structure of Thomson's atom is analogous to __________, an English dessert
Down
  1. 1. A Danish physicist who made foundational contributions to understanding atomic structure and quantum theory, for which he received the Nobel Prize in Physics in 1922. He was also a philosopher and a promoter of scientific research.
  2. 2. A modern framework for visualizing the submicroscopic behavior of electrons in matter.
  3. 3. Greek philosophy supposed the Universe to comprise four elements: Fire, Water, Earth, and Air.
  4. 5. An Ancient Greek pre-Socratic philosopher from Abdera, primarily remembered today for his formulation of an atomic theory of the universe. None of his work has survived.
  5. 6. A British physicist and Nobel Laureate in Physics, credited with the discovery of the electron, the first subatomic particle to be found.
  6. 8. Ancient philosophical speculation that all things can be accounted for by innumerable combinations of hard, small, indivisible particles (called atoms) of various sizes but of the same basic material; or the modern scientific theory of matter according to which the chemical elements that combine to form the great variety of substances consist themselves of aggregations of similar subunits (atoms) possessing nuclear and electron substructure characteristic of each element.
  7. 11. In chemistry, the law of definite proportions, sometimes called Proust's law or the ___________, states that a given chemical compound always contains its component elements in fixed ratio and does not depend on its source and method of preparation.