Development of Atomic Models

Who thought that atoms were tiny, solid spheres with no smaller particles within them. and also predicted that atoms could not be destroyed?

• Democritus

• Aristotle

• Plato

• Thomson

Tags

NGSS.HS-PS1-7

Who proposed a model of the atom that is now called the plum pudding model?

• J J Thomson

• Ernest Rutherford

• James Chadwick

• John Dalton

Rutherford carried out an experiment where he fired a stream of alpha particles at a very thin sheet of gold foil. He found that most of the alpha particles passed straight through the foil, while some were deflected at a small angle and some were deflected directly back.

Rutherford carried out an experiment where he fired a stream of alpha particles at a very thin sheet of gold foil. He found that most of the alpha particles passed straight through the foil, while some were deflected at a small angle and some were deflected directly back.

Specify what this experiment told Rutherford about the structure of the atom.

• Atoms are indivisible solid spheres

• All atter is made up of atoms

• Electrons are scattered through a positive shpere

• Atoms have a small, dense and posititvely charged nucleus at the centre.

Which of the following statements is a part of Rutherford's model of the atom.

• Atoms are mostly empty space.

• Electrons are scattered throughout atoms.

• There is a positive cloud of electorns scattered through it.

Which is the correct sequence of the scientists who made major changes in the model of the atom?

• 2, 1, 4, 3, 5

• 3, 1, 5, 4, 2

• 5, 3, 2, 1, 4

• 4, 3, 2, 1, 5

Which is the correct sequence of the scientists who made major changes in the model of the atom?

• 2, 1, 4, 3, 5

• 3, 1, 5, 4, 2

• 5, 3, 2, 1, 4

• 4, 3, 2, 1, 5

Given a list of atomic model descriptions: A: electron shells outside a central nucleus B: hard, indivisible sphere C: mostly empty space Which list of atomic model descriptions represents the order of historical development from the earliest to most recent?

• A, B, C

• B, C, A

• B, A, C

• A, C, B

Answer explanation

The correct order of historical development for atomic models is B, C, A. Initially thought as hard spheres, then mostly empty space, and finally electron shells around a nucleus.

Match the following

• First person to think of atoms

• Aristotle

• Discovered nucleus; gold foil

• Democritus

• Earth, Air, Wind, and Fire

• John Dalton

• Discovered Electron; plum pudding

• Ernest Rutherford

• Came up with 5 part atomic theory

• JJ Thompson

Who developed the Billiard Ball Model of the atom?

• Dalton

• Rutherford

• Thomson

• Bohr

Place the following scientists in order, from earliest to latest: 
Ernest Rutherford
J.J. Thomson
John Dalton

• J.J. Thomson, John Dalton, Ernest Rutherford

• John Dalton, Ernest Rutherford

• Ernest Rutherford, John Dalton

• John Dalton, J.J. Thomson