WorksheetsAtomic Theory Quiz
Total questions: 1
Worksheet time: 7mins
Who suggested the first atomic theory around 400 BC?
John Dalton
J.J. Thompson
Democritus
Ernest Rutherford
What did Democritus believe all things were composed of?
Water and air
Minute, invisible, indestructible particles of pure matter
Fire and earth
Electrons and protons
What model did J.J. Thompson create to describe the atom?
Nuclear Model
Quantum Model
Plum Pudding Model
Planetary Model
Who proposed the revolutionary view of the atom in 1911?
Niels Bohr
Erwin Schrödinger
Ernest Rutherford
Albert Einstein
What did Rutherford's experiment with alpha particles and gold foil demonstrate?
Electrons orbit the nucleus in fixed paths
Atoms are mostly empty space with a small, dense nucleus
Electrons exist in different energy levels
Atoms are indivisible
What did Niels Bohr suggest about the electrons in an atom?
Electrons are found in a cloud around the nucleus
Electrons orbit the nucleus in fixed paths or shells
Electrons are located in the nucleus
Electrons do not exist in atoms
What did Erwin Schrödinger introduce in his model of the atom?
Fixed orbits for electrons
Wave mechanics
Indivisible atoms
Dense nucleus
What is Schrödinger's wave equation used for today?
To understand the movement of planets
To understand atoms and molecules
To measure the speed of light
To calculate gravitational force
What did Bohr's model of the atom emphasize?
The indivisibility of atoms
The idea of electrons orbiting the nucleus
The existence of a dense nucleus
The wave nature of electrons
What was the evidence that Bohr used to support his theory?
The deflection of alpha particles
The measurement of the line spectrum emitted by hydrogen gas
The indivisibility of atoms
The wave nature of electrons
