Atomic Theory and Atomic Structure Practice Johnson

Which scientist developed this model?

• Dalton

• Thomson

• Rutherford

• Bohr

Tags

NGSS.MS-PS1-1

Which scientist discovered the electron and proposed the model above (which looks like a chocolate chip cookie)?

• Dalton

• Thomson

• Rutherford

• Bohr

Tags

NGSS.MS-PS1-1

Which scientist was the first to develop the idea of atomic theory?

• Dalton

• Thomson

• Rutherford

• Bohr

Which scientist discovered the nucleus from his gold foil experiment?

• Dalton

• Thomson

• Rutherford

• Bohr

What contribution did John Dalton make to atomic theory?

• He discovered that every atom was positively charged.

• He discovered that every element consisted of one type of atom that couldn't be divided.

• He discovered that atoms had nuclei.

• He discovered that atoms could be divided into smaller parts.

Rutherford's gold foil experiment provided evidence that...

• negative and positive charges are spread evenly throughout the atom.

• alpha particles have a positive charge.

• gold is not a dense as previously thought.

• there is a dense positively charged nucleus at the center of an atom.

Tags

NGSS.HS-PS1-8

The first person to propose a theory about an atom called the Atomos Theory was

• Democritus
• Rutherford
• Dalton
• Aristotle

How did each model of the atom help to develop the atomic theory? 

• Each model provided opinions that were added.
• Each model showed different properties of the same structure. 
• Each model showed new particles that had been discovered.
• Each model built upon the other to show new particles or properties of previously discovered particles. 

Tags

NGSS.MS-PS1-1

Value representing the number of protons in an element

• Atomic Mass
• Mass Number
• Valence Electrons
• Atomic Number

Subatomic particles that are neutral in charge

• Neutrons
• Protons
• Nucleus 
• Electrons