Madeleine R 9

By raeme
  • The Alchemists
    500 BCE

    The Alchemists

    Developed knowledge about matter.
  • Democritus
    460 BCE

    Democritus

    Large contributor in the development of the atomic theory of the universe.
  • Plato
    428 BCE

    Plato

    He founded the Academy. He also wrote lots of philosophical texts.
  • Aristotle
    384 BCE

    Aristotle

    He made major contributions to to philosophy and science. He invented formal logic and identified the relationships between scientific disciplines.
  • Lavoisier

    Lavoisier

    Discovered mass gets conserved during a chemical reaction.
  • John Dalton

    John Dalton

    He introduced the atomic theory.
  • Newlands Law of Octaves

    Newlands Law of Octaves

    This law provides a basis for the classification of elements that are similar into groups of elements. It was the first to link elements properties to their atomic masses. This system works best on elements that are lighter.
  • Robert Millikan

    Robert Millikan

    Confirmed the most scientific thoughts at the time.
  • Mendeleev's Pd. Table

    Mendeleev's Pd. Table

    It is used to identify elements and predict their properties.
  • Photoelectric Effect

    Photoelectric Effect

    This effect demonstrated that light has qualities made of particles.
  • Discovery of Radioactivity

    Discovery of Radioactivity

    Radioactivity is the source for heat in satellites and medical procedures/ cancer treatments.
  • Discovery of the Electron

    Discovery of the Electron

    The electron plays an important role in thermal conductivity, electricity, chemistry, and magnetism.
  • Planck's Quantum Theory

    Planck's Quantum Theory

    Explained the nature of the energy that is in electromagnetic waves.
  • Plum Pudding Model

    Plum Pudding Model

    The Plum Pudding Model represents the important step in development of atomic theory.
  • Charge of the Electron

    Charge of the Electron

    Was seen as a turning point when it came to physics. It was important for explaining the chemical bond.
  • Rutherford's Gold Foil Experiment.

    Rutherford's Gold Foil Experiment.

    This model was used to show the nuclear model of an atom.
  • Bohr's Planetary Model

    Bohr's Planetary Model

    A system a small and dense nucleus that is surrounded by electrons. It provided a justification for the physical constants that make up a formula's results.
  • Mosley's Atomic Numbers

    Mosley's Atomic Numbers

    Proved that the atomic number is more relevant than atomic mass.
  • Discovery of the Proton

    Discovery of the Proton

    The proton was discovered by Ernest Rutherford. The discovery of the proton allowed people to get insight on the structure of the atom.
  • Schrodinger Equation

    Schrodinger Equation

    Helped detect the location of the electron.
  • Heisenberg Uncertainty Principle

    Heisenberg Uncertainty Principle

    This gave physicists a better understanding of how things function in the subatomic scale.
  • Discovery of the Neutron

    Discovery of the Neutron

    This discovery made it possible to develop the atomic bomb.