Atomic Theory Warm-Up

What did Rutherford discover in his experiment?

• nucleus

• electrons

• neutrons

• protons

Who discover the electron?

• Dalton

• Rutherford

• Thomson

• Bohr

What did Rutherford discover about atoms?

• An atom is always negatively charged.

• An atom is mostly empty space, but has a dense positively charged center(nucleus).

• An atom is always positively charged.

• All particles will pass straight through gold foil with no change in path.

Tags

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What is a positively charged particle?

• neutron

• electron

• proton

• atom

What is a negatively charged particle?

• neutron

• electron

• proton

• atom

Tags

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Who discover the electron?

• Dalton

• Rutherford

• Thomson

• Bohr

Who discovered the neutron?

• JOSEPH JOHN THOMSON

• ERNEST RUTHERFORD

• NEILS BOHR

• JAMES CHADWICK

Where are electrons located in an atom?

• Nucleus
• Electron Cloud
• Within a Proton
• Within a Neutron

Subatomic particles that are neutral in charge

• Neutrons
• Protons
• Nucleus 
• Electrons

What determines the identity of the atom?

• protons

• neutrons

• electrons

• isotopes