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WorksheetsHistory of the Atom Quiz
Total questions: 15
Worksheet time: 9mins
What term did Democritus use to describe the smallest, indivisible pieces of matter?
Molecules
Atomos
Elements
Particles
According to Dalton's hypothesis, atoms are:
Divisible and changeable
Indestructible and unchangeable
Created and destroyed
Transformable into other elements
Which particle is responsible for the glowing beam observed in the Cathode Ray Tube experiment?
Protons.
Neutrons.
Electrons.
Photons.
The diagram shows J.J. Thomson's atomic model. Which model is represented, and what are its key features?
Plum pudding model; atom is a sphere of positive charge with electrons embedded in it
Nuclear model; atom has a dense central nucleus with electrons orbiting around it
Planetary model; electrons revolve in fixed orbits around the nucleus
Quantum model; electrons exist in probability clouds around the nucleus
Who determined the unit charge of electrons using the oil drop experiment?
Robert Millikan
J.J. Thomson
Ernest Rutherford
Niels Bohr
Who was the scientist who proposed the planetary model of the atom in 1911?
Niels Bohr
Ernest Rutherford
J.J. Thomson
Marie Curie
Who proposed the atomic model that describes the atom as having a positively charged nucleus surrounded by electrons in energy levels?
Niels Bohr
Albert Einstein
Ernest Rutherford
J.J. Thomson
What groundbreaking concept did Louis de Broglie introduce in his 1924 thesis?
The particle nature of light
The wave nature of electrons
The theory of relativity
The uncertainty principle
What does the quantum mechanical model predict about electrons?
The exact path of electrons
The odds of the location of electrons
The speed of electrons
The charge of electrons
How is the quantum mechanical model of the atom visually represented?
A nucleus surrounded by an electron cloud
A nucleus with electrons in fixed orbits
A nucleus with electrons moving in straight lines
A nucleus with electrons forming a solid shell
According to Heisenberg's Uncertainty Principle, what happens when you know an electron's position more accurately?
You also know its momentum more accurately.
You know its momentum less accurately.
The electron's energy increases.
The electron's charge changes.
Who discovered the neutron?
James Chadwick
Ernest Rutherford
Niels Bohr
Albert Einstein
Who used the Gold Foil Experiment?
Ernest Rutherford
Democritus
Erwin Schrodinger
Niels Bohr
Who discovered the Nucleus?
Ernest Rutherford
JJ Thomson
John Dalton
Democritus
