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WorksheetsAtomic Theory Quiz
Total questions: 10
Worksheet time: 5mins
Who was the ancient Greek philosopher that first proposed the idea of atoms?
Aristotle
Democritus
John Dalton
J.J. Thompson
Which Quaker teacher challenged Aristotelian theory and showed that substances always break down into the same elements?
Aristotle
Democritus
John Dalton
J.J. Thompson
Who discovered the electron in 1897?
Aristotle
Democritus
John Dalton
J.J. Thompson
What did J.J. Thompson's model of the atom propose?
Atoms are made up of tiny particles surrounded by empty space
Atoms are uniformly packed spheres of positive matter filled with negatively charged electrons
Atoms consist largely of empty space with a dense, positively charged nucleus
Electrons orbit the nucleus at fixed energies and distances
What did Ernest Rutherford's gold foil experiment reveal about atoms?
Atoms are made up of tiny particles surrounded by empty space
Atoms are uniformly packed spheres of positive matter filled with negatively charged electrons
Atoms consist largely of empty space with a dense, positively charged nucleus
Electrons orbit the nucleus at fixed energies and distances
Who expanded on Rutherford's nuclear model and proposed that electrons orbit the nucleus at fixed energies and distances?
Aristotle
Democritus
Niels Bohr
Werner Heisenberg
What did Werner Heisenberg's uncertainty principle state?
Atoms are made up of tiny particles surrounded by empty space
Atoms are uniformly packed spheres of positive matter filled with negatively charged electrons
Atoms consist largely of empty space with a dense, positively charged nucleus
It is impossible to determine both the exact position and speed of electrons
What does the current quantum model of the atom propose?
Atoms are made up of tiny particles surrounded by empty space
Atoms are uniformly packed spheres of positive matter filled with negatively charged electrons
Atoms consist largely of empty space with a dense, positively charged nucleus
Electrons cannot be pinpointed but exist within a range of possible locations
What happens when electrons circling an atom shift between energy levels?
They absorb or release energy in the form of specific wavelengths of light
They change their size and shape
They combine with other atoms to form compounds
They become positively charged
What did Democritus propose about the nature of atoms?
Atoms are made up of tiny particles surrounded by empty space
Atoms are uniformly packed spheres of positive matter filled with negatively charged electrons
Atoms consist largely of empty space with a dense, positively charged nucleus
Atoms cannot be created or destroyed
