3.1 Intro to Atoms

This particle is found in the nucleus and has no charge

• Neutron
• Proton
• Electron

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

• Electron
• Proton
• Neutron

This is a negatively charged particle found outside the nucleus

• Electron
• Proton
• Neutron

This contains most of the mass of an atom

• Electron Cloud
• Nucleus
• Electron

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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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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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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

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What does the nucleus of an atom contain?

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

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Who came up with this model of an atom?

• J.J. Thompson
• Ernest Rutherford
• Neils Bohr
• James Chadwick

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