Atomic Theory

"Everything is composed of atoms" was FIRST stated by:

• Democritis
• Dalton
• Aristotle

• Heisenberg

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 is:

• Bohr
• Rutherford
• Schroedinger
• Einstein

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NGSS.HS-PS1-8

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

How did Rutherford discover the proton?

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

What does the nucleus of an atom contain?

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

Tags

NGSS.HS-PS1-8

True or False: The majority of an atom is made up of empty space

• True
• False

The word "atom" comes from a Greek word that means

• Invisible
• Indivisible
• Undivided

Electrons can be found in

• The protons
• The nucleus
• Electron Clouds

Which scientist figured out that electrons orbit a certain distance from the nucleus and either radiate or absorb energy when jumping orbitals?

• Dalton

• Thomson

• Rutherford

• Bohr