Atomic Theory & Structure

This particle is found in the nucleus and has a positive charge

• Electron
• Proton
• Neutron

The first person to ever talk about an atom was

• Democritus
• Rutherford
• Dalton

All matter is made of what?

• energy 
• atoms 
• electrons 
• compounds 

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NGSS.MS-PS1-1

How did Rutherford discover the proton?

• Cathode tube ray experiment
• Gold Foil Experiment
• Planetary Model
• Plum Pudding Model

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What scientist is best known for his "Plum Pudding" or "chocolate chip cookie" model of the atom?

• J.J. Tomson

• Ernest Rutherford

• John Dalton

• Democritus

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NGSS.MS-PS1-1

Place the following scientists in order, from earliest to latest: 
A) Ernest Rutherford
B) J.J. Thomson
C) John Dalton

• B,C,A
• C,A,B
• A,C,B
• C,B,A

Tags

NGSS.MS-PS1-1

J.J. Thomson provided evidence that an atom...

• is the smallest particle of matter
• contains negatively charged particles
• has an overall negative charge
• has an overall positive charge

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NGSS.MS-PS1-1

What does the nucleus of an atom contain?

• Electrons and neutrons
• Protons and neutrons
• Neutrinos and positrons
• DNA and RN

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

• Invisible

• Indivisible or Uncuttable

• Undivided

• Indestructable

Which scientist saw the atom as a positively charged sphere with negative particles (electrons) embedded within?

• J.J. Thomson
• Niels Bohr
• John Dalton
• Ernest Rutherford

Tags

NGSS.MS-PS1-1