Atomic Structure and History

all matter is made of what 

• energy 
• atoms 
• electrons 
• compounds 

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NGSS.MS-PS1-1

The positive particles of an atom are 

• electrons 
• positrons 
• neutrons 
• protons 

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the central region of an atom where its neutrons and protons are is its 

• nucleus 
• electron cloud
• core 
• center 

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NGSS.MS-PS1-1

an atom with atomic number 6 would have how many protons 

• 6
• 12
• 3
• cannot be determined 

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NGSS.MS-PS1-1

Particles in an atom that are neutral and have no charge are 

• negatrons 
• electrons 
• neutrons 
• protons 

What is the atomic number for an element with three protons?

• 2
• 1
• 3
• 6

A particle that moves around the nucleus is a(n)...

• Proton
• Neutron
• Electron
• Quark

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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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NGSS.HS-PS1-8

What scientist is best known for his "Plum Pudding" model of the atom?

• J.J. Tomson
• Ernest Rutherford
• John Dalton
• Democritus

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NGSS.MS-PS1-1

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

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