Atomic History/Structure

Neutrons are found in the ? and were discovered by ?

• Nucleus; Chadwick

• Nucleus; Rutherford

• Electron cloud; Chadwick

• Electron cloud; JJ Thompson

Electrons have a ___________ charge.

• Positive
• Negative
• Neutral

Tags

NGSS.HS-PS2-4

Who believed that electrons were scattered amongst positively charged material.

• JJ Thomson
• Ernest Rutherford
• John Dalton
• Niels Bohr

Tags

NGSS.HS-PS1-3

Believed that atoms are small, hard particles that were "indivisible"

• Democritus
• Aristotle
• Schrodinger
• Greek Philosophers

Did experiments to show that atoms form compound in set ratios.

• John Dalton
• Schrodinger
• Niels Bohr
• JJ Thomson

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

Discovered that the atom has a small, dense, positively charged nucleus.

• Rutherford

• Heisenberg

• Democritus

• JJ Thomson

Believed that all atoms of the same element would be the same.

• John Dalton
• JJ Thomson
• Niels Bohr
• Modern Atomic Theory

Tags

NGSS.MS-PS1-1

The following picture represents which atomic model?

• Plum Pudding

• Gold Foil

• Chadwick

• Atomic Theory

The following picture represents which atomic model?

• Rutherford

• John Dalton

• Democritus

• Chadwick

Which statement about electrons is true?

• Electrons circle the nucleus of the atom

• Electrons have a positive charge

• Electrons have a mass of 1 amu

• Electrons exist in the nucleus of the atom