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WorksheetsAtomic Scientists
Total questions: 20
Worksheet time: 25mins
Elements are made of tiny solid particles
Bohr
Democritus
Thomson
Aristole
All matter is made of atoms
Rutherford
Bohr
Democritus
Dalton
Most mass in an atom is in the nucleus
Rutherford
Thomson
Bohr
Dalton
Positively charged atoms with electrons. "Plum pudding"
Democritus
Bohr
Thomson
Dalton
electrons travel in fixed orbits
Dalton
Bohr
Thomson
Rutherford
Small dense nucleus in atom that is surrounded by electrons
Heisenberg
Shrodinger
Thomson
Rutherford
"Atomos" atoms always move
Bohr
Democritus
Julius Cesar
Heisenberg
In chemical reactions, atoms are separated, combined, or rearranged.
Rutherford
Thomson
Dalton
Democritus
conducted gold foil experiment
Schrodinger
Dalton
Heisenberg
Rutherford
founded electron cloud
Thomson/Rutherford
Dalton/Thomson
Schrodinger/Heisenberg
Bohr/Democritus
Founded proton
Thomson
Rutherford
Dalton
Democritus
Founded electron
Bohr
Thomson
Democritus
Dalton
What did Rutherford discover about atoms?
An atom is always negatively charged.
An atom is mostly empty space, but has a dense positively charged center(nucleus).
An atom is always positively charged.
All particles will pass straight through gold foil with no change in path.
What is a positively charged particle?
neutron
electron
proton
atom
What is a negatively charged particle?
neutron
electron
proton
atom
What is a particle with no charge?
neutron
electron
proton
atom
What did Rutherford discover in his experiment?
nucleus
electrons
neutrons
protons
What does atom mean?
small
visible
indivisible
particle
Rutherford's "gold-foil" experiment using alpha particle scattering concluded that
the center of the atom is empty
atomic mass is spread over the whole atom
the center of the atom has a negative charge
most of the atom is empty
What is the correct order of scientists in order of their work related to the atomic theory from earliest to most recent?
Ernest Rutherford, JJ Thomson, John Dalton, & Democritus
JJ Thomson, John Dalton, Ernest Rutherford, & Democritus
Democritus, John Dalton, JJ Thomson, Ernest Rutherford.
John Dalton, JJ Thomson, Democritus, & Ernest Rutherford
