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WorksheetsScientific Models of the Atom
Total questions: 16
Worksheet time: 8mins
Rutherford realized that the atomic nucleus was positively charged because
it attracted alpha particles.
it deflected alpha particles.
it had no effect on alpha particles.
it produced alpha particles.
Niels Bohr added _______________ to the model of the atom.
electrons.
a nucleus.
neutrons.
energy levels.
Which of the following is the best description of J.J. Thomson's model of the atom?
a featureless, indivisible sphere
a sphere of positive material with electrons embedded in it
mostly empty space with electrons randomly orbiting around a positive nucleus
mostly empty space with electrons located in set orbits around a positive nucleus.
Place the following atomic models in order, from earliest to latest:
A) Rutherford B) Thomson C) Dalton
B, C, A
C, A, B
A, C, B
C, B, A
Which scientist believed that elements differed from one another because their atoms had different mass?
Democritus
Dalton
Thomson
Rutherford
Which scientist proposed a new atomic model after discovering the electron in 1897?
Dalton
Thomson
Rutherford
Bohr
Which of the following is a positively charged particle found in the nucleus of an atom?
Electron
Proton
Neutron
Quark
Which particle carries no charge?
Neutrons
Electrons
Protons
All matter is made of what
energy
atoms
electrons
compounds
Which is true?
Matter is made up proteins.
Atoms can divide into smaller pieces
All atoms of an element are exactly alike
Different elements are made up of the same kind of atoms
Which scientists believed an atom was indivisible? (Choose all correct responses.)
Democritus
Dalton
Thomson
Rutherford
In the atomic model nicknamed the "plum pudding" model, what do the plums represent?
the nucleus
the atom
the electrons
the positive material
Who discovered that atoms are mostly empty space?
Dalton
Thomson
Rutherford
Bohr
Who proposed that electrons move around the nucleus in circular orbits?
Dalton
Thomson
Rutherford
Bohr
