Atomic Theory

JJ Thomson discovered what subatomic particle

• nucleus

• neutron

• proton

• electron

Rutherford discovered what part of the atom

• nucleus

• neutron

• proton

• electron

Tags

NGSS.HS-PS1-8

First person to propose the concept of an atom

• Rutherford

• Democritus

• Dalton

• Bohr

Who proposed the theory that atoms orbit the nucleus in specific orbits.

• Bohr

• Democritus

• Rutherford

• Chadwick

This particle balances the charges from the protons to make the atom neutral

• proton

• electron

• neutron

• nucleus

These particles are found in the nucleus

• protons and electrons

• nucleus and neutrons

• protons and neutrons

• electrons and neutrons

Tags

NGSS.HS-PS1-8

Thomson Experimented with ______

• Gold Foil

• alpha particles

• cathode rays

• protons

Which Scientist created this model

• Democritus

• Chadwick

• Bohr

• Rutherford

Which scientist developed the atomic theory

• Aristotle
• Dalton
• Democritus

The smallest unit of a pure substance that has the properties of that substance

• element
• atom
• neutron
• compound