Atomic Models
Physics ⇒ Modern Physics
Atomic Models starts at 9 and continues till grade 12.
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See sample questions for grade 9
Describe one way in which Bohr’s model improved upon Rutherford’s model.
Describe the main features of Rutherford’s atomic model.
Describe the main idea of Dalton’s atomic theory.
Explain why most alpha particles passed straight through the gold foil in Rutherford’s experiment.
Explain why the plum pudding model was replaced by Rutherford’s model.
In Bohr’s model, what happens when an electron jumps from a higher energy orbit to a lower energy orbit?
State one limitation of Rutherford’s atomic model.
What is the charge of a proton?
What is the main difference between the Bohr model and the quantum mechanical model of the atom?
Which atomic model first introduced the concept of quantized energy levels for electrons?
Which experiment led to the discovery of the nucleus?
Which model of the atom is also known as the 'plum pudding model'?
Which scientist’s model explained the hydrogen atom’s line spectrum successfully?
Which subatomic particle has no electric charge?
Which subatomic particle was discovered by James Chadwick?
Who proposed the first atomic theory based on experimental evidence?
A scientist bombards a thin sheet of metal with fast-moving alpha particles. Most particles pass through, but a few are deflected at large angles. What does this observation suggest about the structure of the atom?
Describe one experimental observation that led to the rejection of the Thomson (plum pudding) model of the atom.
Explain how the quantum mechanical model of the atom differs from the Bohr model in describing the position of electrons.
Context: An atom has 11 protons, 12 neutrons, and 11 electrons. According to modern atomic theory, what is the mass number and atomic number of this atom?
