chemistry

SCIENCE 9

Chemistry

ATOMIC MODELS

Multiple Choice

In his nuclear model, the protons and neutrons, which comprise nearly all of the mass of the atom, are located in a nucleus at the center of the atom.

• Niels Bohr

• Ernest Rutherford

• J. J. Thomson

• John Dalton

Multiple Choice

His theory stated that atoms are indivisible, those of a given element are identical and compounds are combinations of different atoms.

• J. J. Thomson

• John Dalton

• Ernest Rutherford

• Niels Bohr

Multiple Choice

He produced the "plum pudding" model of the atom that shows the atom as composed of electrons scattered throughout a spherical cloud of positive charge.

• John Dalton

• J. J. Thomson

• Ernest Rutherford

• Niels Bohr

Multiple Choice

He proposed stable electron orbits and explained the emission spectra of some elements.

• Niels Bohr

• Erwin Schrodinger

• J. J. Thomson

• John Dalton

Multiple Choice

He proposed that electrons don't move around the nucleus in orbits but in clouds where their position is uncertain.

• John Dalton

• Niels Bohr

• Ernest Rutherford

• Erwin Schrodinger