Who is credited with the discovery of the electron?
Journey Through Atomic History

Quiz
•
Chemistry
•
10th Grade
•
Medium
Manuel Guillen
Used 3+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ernest Rutherford
Niels Bohr
J.J. Thomson
Albert Einstein
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What was the main conclusion from Rutherford's gold foil experiment?
Atoms are mostly empty space with a small, dense nucleus.
Electrons orbit the nucleus in fixed paths.
Atoms can be divided into smaller particles.
Energy levels of electrons are quantized.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What did Bohr's model of the atom suggest about electrons?
Electrons move in random patterns around the nucleus.
Electrons have properties of both particles and waves.
Electrons travel in fixed orbits around the nucleus.
The position of electrons cannot be determined precisely.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which experiment led to the downfall of the plum pudding model of the atom?
The cathode ray tube experiment
The gold foil experiment
The oil drop experiment
The double-slit experiment
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the significance of the Heisenberg Uncertainty Principle in the quantum mechanical model?
It proves that electrons have a dual wave-particle nature.
It states that the exact position and momentum of an electron cannot be simultaneously known.
It defines the fixed orbits of electrons.
It describes the nucleus as being composed of protons and neutrons.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is NOT a postulate of Dalton's atomic theory, which is considered an early part of modern atomic theory?
Atoms of different elements can combine in simple whole-number ratios to form compounds.
Atoms are indivisible and indestructible.
Atoms of the same element are identical in size, mass, and other properties.
The nucleus of an atom is surrounded by a cloud of electrons.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What did the quantum mechanical model introduce that was absent in Bohr's model?
The concept of energy levels
The idea of a nucleus
The electron cloud and probability distributions
The fixed orbits of electrons
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