Atomic Theory

Cards (39)

  • The philosopher who first introduced the formation of atomos.
    Democritus
  • This is what Democritus called the smallest pieces of matter. It means uncuttable.
    Atomos
  • Who believed that matter was continuous and made of four basic elements and did not believe Democritus' judgements?
    Aristotle
  • Who revived Democritus's ancient idea? He believed that atoms were solid, indivisible spheres.
    John Dalton
  • It is the representation of Democritus' idea of an atom.
    Indivisible Particle Model
  • It is the representation of John Dalton's description of an atom.
    Solid Sphere model
  • Who is the father of Modern Atomic Theory?
    John Dalton
  • It is a law that says that a compound always contains the same elements in the same ratio by mass.
    Law of Definite Proportions
  • Who was the one that made the Law of Definite Propotions?
    Joseph Proust
  • It is a law that says when two elements form more than one compound, the masses of one element that combine with a fixed mass of the other are in ratios of small whole numbers.
    Law of Multiple Proportions
  • Who introduced the Law of Multiple Proportions?
    John Dalton
  • What law supported Dalton's theory that atoms are rearranged but not changed?
    Law of Conservation of Mass
  • Who introduced the Law of Conservation of Mass?
    Antoine Lavoisier
  • He discovered the electron and showed that atoms are made of smaller particles. He proposed the "Plum Pudding Model" of the atom.
    J.J. Thomson
  • What experiment did J.J. Thomson created to discover the electron?
    Cathode Ray Tube Experiment
  • It is the model of J.J. Thomson that is shape like a cookie.
    Plum Pudding Model
  • He discovered the nucleus of the atom and that atoms are mostly empty space using his Gold Foil Experiment.
    Ernest Rutherford
  • What is the experiment created by Ernest Rutherford that led him to discover the nucleus?
    Gold Foil Experiment
  • He discovered the neutron, a neutral particle found in the nucleus along with protons using his experiment Beryllium Radiation Experiment.
    James Chadwick
  • What is the experiment James Chadwick created to discover neutrons?
    Beryllium Radiation Experiment
  • He discovered the exact charge of a single electron using his Oil Drop Experiment.
    Robert Andrews Millikan
  • What was the experiment Millikan created to discover the exact charge of an electron?
    Oil Drop Experiment
  • Who discovered the electron?
    J.J. Thomson
  • Who discovered the nucleus?
    Ernest Rutherford
  • Who discovered the neutron?
    James Chadwick
  • Who discovered the exact charge of a single electron?
    Robert Andrews Millikan
  • Identify their Experiments
    • J.J. Thomson: Cathode Ray Tube Experiment
    • Ernest Rutherford: Gold Foil Experiment
    • James Chadwick: Beryllium Radiation Experiment
    • Robert Andrews Millikan: Oil Drop Experiment
  • What atomic model did Ernest Rutherford created?
    Nuclear Model of Atom
  • What atomic model did Erwin Schrodinger created?
    Quantum Mechanical Model
  • What atomic model did Niels Bohr created?
    Planetary Model
  • Identify their Atomic Model
    • Democritus of Abdera: Indivisible Particle Model
    • John Dalton: Solid Sphere Model
    • J.J. Thomson: Plum Pudding Model
    • Ernest Rutherford: Nuclear Model
    • Niels Bohr: Planetary Model
    • Erwin Schrodinger: Quantum Mechanical Model
  • Who is the scientist who discovered the law of definite proportions?
    Proust
  • Who introduced the idea that matter is made up of tiny, indivisible particles called atoms?
    Democritus
  • Whose work showed for the first time that atoms emit negatively charged particles?
    J.J. Thomson
  • What model shows an atom as a ball of positive charge with electrons embedded in it, much like chocolate spread through cookie dough?
    Plum Pudding Model
  • Who is the scientist whose experiment led to the idea that the center of the atom is a dense positive charge?
    Ernest Rutherford
  • What does the atom consist of?
    Electrons, Protons, and Neutrons
  • How many protons are there in any given neutral atom relative to the number of electrons?
    equal to the amount of electrons
  • What subatomic particle(s) are found in the nucleus and account for most of the mass of the atom?
    Protons and Neutrons