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WorksheetsAtomic Theory
Total questions: 10
Worksheet time: 5mins
Who was considered as one of the founders of the ancient atomist theory?
Aristotle
Parmenides
Empedocles
Democritus
All of the following are true about Democritus' atomic theory EXCEPT ______.
Everything is made up of atomos and the void.
Atoms vary in size and shape.
Atoms are composed of subatomic particles.
Atoms are infinite in number.
Which scientist is known for his, "Plum Pudding" model of an atom?
JJ Thomson
John Dalton
Ernest Rutherford
Erwin Schrodinger
Which of the following is TRUE about Dalton's atomic theory?
Each element contains a set of protons, neutrons, and electrons.
All atoms, regardless of whatever element, are identical.
Atoms can be created and destroyed.
Each element is composed of extremely small particles called, "atoms".
How did Rutherford discovered the proton?
through the cathode-ray experiment
through the Gold-foil experiment
through studying the wave property of an electron
through injecting gamma rays in an atom
Rutherford's experiment provided evidence that ___________.
negative and positive charges are spread evenly throughout the atom
Gold is not as dense as previously thought.
Alpha particles have a positive charge.
There is a dense, positively-charged nucleus at the center of the atom.
Who gave the idea that the atom is mostly made up of empty space?
Ernest Rutherford
JJ Thomson
Erwin Schrodinger
Neils Bohr
Which scientist proposed the model of the atom in which the electrons are orbiting at different levels?
Ernest Rutherford
JJ Thomson
Erwin Schrodinger
Neils Bohr
What will happen when an electron jumps from a higher energy level to a lower energy level?
Nothing will happen.
Energy is absorbed.
Energy is emitted in the form of light.
The electron will leave the ground state.
Which among the following is TRUE about Schrodinger's atomic theory?
Energy is concentrated on the electrons.
Electrons can act as particles and waves.
The electrons' location can be determined by merely looking at it.
Electrons are infinite in number.
