Atomic Theory

Subatomic particles with a negative charge

• Electrons

• Neutrons

• Protons

• Quarks

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NGSS.MS-PS2-3

Subatomic particles with a positive charge

• neutrons
• atomic mass
• protons
• isotopes

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Subatomic particles that are neutral in charge

• Neutrons
• Protons
• Nucleus 
• Electrons

Where electrons are likely to be found as they travel around the nucleus

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

Tags

NGSS.MS-PS1-1

A tiny but very dense, positively charged portion of the atom that holds most of the atomic mass

• Electron Shells
• Orbitals
• Electron Cloud
• Nucleus

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Discovered the electron within the atom by stating the atom had negatively charged particles inside of it.

• Thomson

• Chadwick

• Schrodinger & Heisenberg

• Dalton

Believed that atoms of the same element are identical to each other

• Bohr
• Rutherford
• Dalton
• Thomson

John Dalton stated:

• elements are made of atoms
• atoms of a given element are identical
• atoms cannot be subdivided, created, nor destroyed
• all of the above

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NGSS.HS-PS1-7

The scientist responsible for "discovering" the nucleus by stating that the atom had a positively charged center with negative charges surrounding it is:

• Bohr

• Rutherford

• Schroedinger

• Einstein

The nucleus of an atom can be described as:

• spacious and negatively charged
• dense and positively charged
• spacious and positively charged
• dense and negatively charged

Tags

NGSS.MS-PS1-1