Atomic Theory History

Who was the first person credited with studying atomic theory?

• Dalton

• Democritus

• Chadwick

• Miller

Earth, Air, Fire, and Water were the fundamental elements proposed by ___.

• Aristotle

• Democritus

• Plato

• Galileo

Which Scientist said, matter made of atoms that can not be created or destroyed

• Democritus

• Aristotle

• John Dalton

• JJ. Thompson

Tags

NGSS.HS-PS1-7

What is the correct order of scientists in order of their work related to the atomic theory from earliest to most recent?

• Ernest Rutherford, JJ Thomson, John Dalton, & Democritus

• JJ Thomson, John Dalton, Ernest Rutherford, & Democritus

• Democritus, John Dalton, JJ Thomson, Ernest Rutherford.

• John Dalton, JJ Thomson, Democritus, & Ernest Rutherford

What was J. J. Thomson's contribution to the atomic theory?

• Discovered the electron

• Discovered the nucleus -did the gold foil experiment

• Created a model of the atom with electrons moving around the nucleus in fixed orbits

• Discovered the neutron

Who proposed that the atom consists mostly of empty space with a nucleus at the centre?

• Bohr

• Dalton

• Rutherford

• Chadwick

What subatomic particles did James Chadwick discover?

• protons. 

• neutrons

• electrons

• quarks

Tags

NGSS.HS-PS1-8

Who's atomic model is this?

• Thomson

• Rutherford

• Democritus

• Bohr

Tags

NGSS.MS-PS1-1

Which Scientist created this model?

• Democritus

• Chadwick

• Bohr

• Rutherford

Tags

NGSS.HS-PS1-8

What is the smallest particle of an element that retains the chemical properties of that element?

• ion

• isotope

• atom

• element