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WorksheetsHistory of the Atom Preview
Total questions: 15
Worksheet time: 1hrs 6mins
Bohr discovered that electrons are located in
the nucleus
inside protons
electron cloud
circular orbits around the nucleus
Which scientist discovered the electrons?
Dalton
Thomson
Atristotle
Bohr
What is a particle with one negative charge called?
electron
proton
quark
neutron
The smallest particle of an element that still represents that element.
Nucleus
electron
proton
atom
Developed an atomic theory of matter.
Chadwick
Millikan
Rutherford
Dalton
Who discovered the neutrally charged subatomic particles?
Dalton
Goldstein
J.J. Thomson
Chadwick
Who developed the planetary model of the atom?
Niels Bohr
Ernest Rutherford
John Dalton
Democritus
Worked with Rutherford to discover particles with no charge -- called neutrons.
James Chadwick
Niels Bohr
Democritus
Thomson
Proposed that electrons move around the nucleus in specific layers, or shells.
Bohr
Rutherford
Chadwick
Thomson
