Atomic Theory Experiments

Where are the electrons found in an atom?

• In specific orbitals, like planets around the sun
• In a cloud around the nucleus
• in the nucleus
• in a blob of positive matter

What basic part of the atom is so small it is considered to have no mass?

• proton
• neutron
• electron
• nucleus

What charge does the atom have?

• positive
• negative
• neutral

He unknowingly discovered the electron as a result of cathode ray tube experiments.    

• Thomson
• Chadwick
• Democritus
• Rutherford

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The smallest particle of an element that still retains all the properties of that element. 

• atom
• cathode ray
• electron
• compound

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How did Rutherford discover the proton?

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

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Electrons can be found in

• The protons
• The nucleus
• Electron Clouds
• exact locations

This particle is found in the nucleus and has no charge.

• Neutron
• Proton
• Electron
• quark

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This contains most of the mass of an atom

• Electron Cloud
• Nucleus
• Electron

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NGSS.MS-PS1-1

The picture above represents Rutherford’s __________ experiment.

• gold foil
• cathode ray tube
• oil drop
• physical and chemical changes

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