The Atom

Which scientist discovered the electrons?

• Dalton

• Thomson

• Atristotle

• Bohr

Rutherford and his students did experiments that showed

• quark

• nucleus

• proton

• electron

Tags

NGSS.HS-PS1-8

Bohr discovered that electrons are located in

• the nucleus

• inside protons

• electron cloud

• circular orbits around the nucleus

Which scientist discovered that the nucleus contained neutrons?

• bohr

• Rutherford

• Dalton

• Chadwick

Tags

NGSS.HS-PS1-8

The smallest particle of an element that still represents that element.

• Nucleus

• electron

• proton

• atom

What is the neutral particle found in the nucleus called?

• proton

• neutron

• electron

• quark

Tags

NGSS.HS-PS1-8

Who was the first person to come up with the Atomic Theory which included four parts.

• John Dalton

• Democritus

• Ernest Rutherford

• Niels Bohr

The positive particles of an atom are 

• electrons 
• positrons 
• neutrons 
• protons 

The central region of an atom where neutrons and protons are located is the __________________.

• nucleus 
• electron cloud
• core 
• center 

Tags

NGSS.HS-PS1-8

Used the word "atomos" to decsribe the uncuttable (indivisible) atom.

• Democritus

• Thomson

• Bohr

• Dalton