8.3D Atomic Scientists

Which scientist developed the atomic theory, saying elements are composed of atoms, atoms of the same element are identical, atoms can change when chemically mixed with other elements?

• JJ Thomson

• Ernest Rutherford

• John Dalton

• James Chadwick

Tags

NGSS.HS-PS1-7

JJ Thomson's theory was nicknamed _______.

• Billiard Ball Theory or sphere

• Solar System Theory

• Electron Cloud

• Plum Pudding or Chocolate Chip

Who discovered the proton?

• Thomson
• Dalton
• Bohr
• Rutherford

He developed the planetary model of the atom.

• Rutherford
• Bohr
• Chadwick
• Dalton

What did Thomson discover?

• electron
• proton
• neutron
• electron cloud

What does this image represent

• Billiard Ball
• Solar System
• Plum Pudding
• Electron Cloud

Tags

NGSS.HS-PS1-8

The Gold Foil experiment was done by __________.

• Chadwick
• Bohr
• Rutherford
• Thomson

Tags

NGSS.HS-PS1-8

The scientist responsible for "discovering" the nucleus and saying the atom is mostly empty space is:

• Bohr

• Rutherford

• Schroedinger

• Einstein

Tags

NGSS.HS-PS1-8

What was wrong with Dalton's model of the atom?

• He said the atom had a dense, positive center.
• He said the atom was made of positive matter surrounding negative particles.
• He said atoms cannot be subdivided, created or destroyed.
• He said e- follow specific paths.

Tags

NGSS.MS-PS1-1

What was Dalton's model of the atom described as?

• plum pudding model
• solar system model
• electron cloud
• solid sphere