Atomic Theory and Electron Behavior

Mr. Anderson discusses the history and development of atomic theory, starting with Democritus and Dalton's early ideas, leading to JJ Thompson's discovery of the electron and Rutherford's gold foil experiment. The video further explores Bohr's model and the evolution of quantum physics, highlighting contributions from Schrodinger and Heisenberg. The periodic table's development and its significance are also covered, providing a comprehensive overview of atomic structure and theory.

What is the scale used to measure the nucleus of an atom?

• Picometer

• Angstrom

• Fenet

• Nanometer

Who is credited with organizing the periodic table based on atomic number?

• John Dalton

• Ernest Rutherford

• Dmitri Mendeleev

• JJ Thompson

What was Democritus' contribution to atomic theory?

• Concept of indivisible atoms

• Development of the periodic table

• Gold foil experiment

• Discovery of the electron

According to John Dalton, what are compounds made of?

• Mixtures of elements

• Specific atoms in a fixed ratio

• Electrons and protons

• Neutrons and electrons

What did JJ Thompson discover using the cathode ray tube?

• Nucleus

• Neutrons

• Protons

• Electrons

What was the key finding of Rutherford's gold foil experiment?

• Existence of a dense nucleus

• Atoms are mostly empty space

• Atoms are indivisible

• Electrons orbit the nucleus

What did Niels Bohr propose about electron movement?

• Electrons are stationary

• Electrons are particles

• Electrons move in specific orbits

• Electrons are waves

What is Schrodinger known for in atomic theory?

• Discovery of the neutron

• Gold foil experiment

• Electrons as waves

• Electrons as particles

What did Heisenberg contribute to atomic theory?

• Electron cloud model

• Periodic table organization

• Uncertainty principle

• Discovery of protons

What is the modern understanding of electrons in quantum theory?

• Electrons are fixed

• Electrons are waves

• Electrons are particles

• Electrons have wave-particle duality