WorksheetsCrash Course Atomic Theory
Total questions: 10
Worksheet time: 5mins
Who first came up with the idea that matter is composed of tiny particles?
Leucippus and Democritus
Antoine Lavoisier
James Dalton
Ernest Rutherford
What does the term 'atomos' mean?
Small
Divisible
Uncuttable
Infinite
Which model of the atom is often called the 'plum pudding model'?
Thompson's Model
Heisenberg's Model
Rutherford's Model
Bohr's Model
What did Ernest Rutherford's gold foil experiment discover?
Protons
The nucleus
Electrons
Neutrons
What fundamental particles did Rutherford's later experiments identify?
Neutrons
Photons
Protons
Electrons
Niels Bohr's model is sometimes referred to as what?
The quantum model
The electron shell model
The cloud model
The planetary model
What principle makes it impossible to know both the momentum and position of an electron?
Planck's principle
Bohr's principle
Rutherford's principle
Heisenberg's uncertainty principle
What does quantum theory propose about electrons?
They are only particles
They are neither particles nor waves
They are only waves
They have properties of both particles and waves
What are the regions called where an electron is most likely to be found according to modern atomic theory?
Paths
Orbits
Trajectories
Orbitals
Which model of the atom is often referred to as the 'cloud model'?
Thompson's Model
Quantum Model
Rutherford's Model
Bohr's Model
