Atomic Theory

Subatomic particles with a negative charge

• Electrons

• Neutrons

• Protons

• Quarks

Tags

NGSS.MS-PS2-3

Subatomic particles with a positive charge

• neutrons
• atomic mass
• protons
• isotopes

Tags

NGSS.HS-PS1-8

Subatomic particles that are neutral in charge

• Neutrons
• Protons
• Nucleus 
• Electrons

Discovered the nucleus of the atom through the Gold Foil Experiment

• Rutherford
• Chadwick
• Thomson
• Dalton

Tags

NGSS.HS-PS1-8

Discovered the electron within the atom

• Thomson
• Chadwick 
• Schrodinger & Heisenberg
• Dalton

Discovered the neutron within the atom

• Democritus
• Thomson
• Rutherford
• Chadwick

Tags

NGSS.HS-PS1-8

Believed that atoms of the same element are identical to each other

• Bohr
• Rutherford
• Dalton
• Thomson

"Everything is composed of atoms" was stated by:

• Democritis
• Dalton
• Moseley
• Einstein

Tags

NGSS.MS-PS1-1

John Dalton stated:

• elements are made of atoms
• atoms of a given element are identical
• atoms cannot be subdivided, created, nor destroyed
• all of the above

Tags

NGSS.HS-PS1-7

The word "atom" comes from a Greek word that means

• Invisible
• Indivisible
• Undivided