WorksheetsHistory of the atomic model
Total questions: 20
Worksheet time: 12mins
Whose model suggested that negative particles were mixed in with positively charged material - like seeds in a watermelon?
J.J. Thomson
Ernest Rutherford
Niels Bohr
Albert Einstein
Who discovered that the atom had an small, dense, positively charged center?
Ernest Rutherford
J.J Thomson
Robert Millikan
John Dalton
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 discovered that the atom has parts - which means it can be divided?
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
Which scientist was the first person responsible for proposing the idea of atoms?
Democritus
John Dalton
Ernest Rutherford
J.J. Thomson
Niels Bohr
Which scientist was the first person responsible for proposing the discovery of the electron?
Democritus
John Dalton
Ernest Rutherford
J.J. Thomson
Niels Bohr
Which scientist was the first person responsible for proposing the discovery of the nucleus?
Democritus
John Dalton
Ernest Rutherford
J.J. Thomson
Niels Bohr
Which scientist claimed that the atom was a small, dense, solid sphere?
Democritus
John Dalton
Ernest Rutherford
J.J. Thomson
Niels Bohr
Which scientist's model is referred to as the Plum Pudding Model?
Democritus
John Dalton
Ernest Rutherford
J.J. Thomson
Niels Bohr
Which scientist proposed the idea that the electrons orbited the nucleus on fixed paths with designated energies?
Democritus
John Dalton
Ernest Rutherford
J.J. Thomson
Niels Bohr
Which model of the atom is the most up to date model?
The Billiard Ball Model
The Plum Pudding Model
The Planetary Model
The Quantum Mechanical Model
The Nuclear Model
Discovered the neutron
Democritus
John Dalton
JJ Thomson
Robert Millikan
James Chadwick
Elements in the same group have the same number of ____________.
Valence Electrons
Energy Levels
Protons
Charges
Elements in the same group have similar __________.
Shapes
Properties
Colors
Energy levels
Who developed the Periodic Table of Elements?
Dmitri Mendeleev
Dmitri Mendeleev and Scientists
Dmitri Mendeleev and Julius Lothar Meyer
Dmitri Mendeleev, Julius Lothar Meyer and other Scientists
