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Atomic Theory

Studying the early atomic theory

This man was known as the "Laughing Philosopher". Democritus
He stated that "Compounds are formed by a combination of two or more different kinds of atoms." John Dalton
Who developed the Plum Pudding Model? J.J. Thomson
Who discovered protons? Eugen Goldstein
Who discovered the neutron? James Chadwick
Subatomic particle with no charge. Neutron
Protons + neutrons = ? Mass number
What do we call an atom whose mass has changed? Isotope
What do we call and atom that has more electrons than protons? Anion
What model has no subatomic particles? Indivisible sphere
What experiment was used to find both protons and electrons? Cathode Ray Tube
What was the last subatomic particle to be discovered? Neutron
Which scientist did not perform any experiments? Democritus
Who stated that "A chemical reaction is a rearrangement of atoms"? John Dalton
Who discovered electrons? J.J. Thomson
Which scientist was a party animal? Ernest Rutherford
Who developed the Nuclear Atomic Model? James Chadwick
Subatomic particle with a negative charge. Electron
Number of protons = ? Atomic number
Weighted average of isotopes. Average atomic mass
These are "paws-itive". Cations
Which model includes neutrons? Nuclear atomic model
Which model shows electrons orbiting around the nucleus? Planetary model
Has mass but no charge. Neutron
Opposite charges will... Attract
Which experiment did Rutherford perform? Gold Foil
What model of the atom did J.J. Thomson propose? Plum Pudding
A-Negative-Ion Anion
Which experiment did Millikin perform? Oil Drop
More protons than electrons. Cation
Average atomic mass is a(n): Weighted average
When protons = electrons the atom is: Neutral
When the number of neutrons has changed the atom is called a(n): Isotope
When protons do not equal electrons the atom is called a(n): Ion
Which subatomic particle was discovered first? Proton
Where do protons and neutrons exist? Nucleus
Subatomic particle with a positive charge. Proton
Who discovered the mass and charge of an electron? Robert Millikin
Who performed the Gold Foil experiment? Ernest Rutherford
Which scientist used a Cathode Ray Tube: John Dalton, Ernest Rutherford, J.J. Thomson, or James Chadwick? J.J. Thomson
Which scientist is relatively unknown because he didn't get along well with others? Eugen Goldstein
Who performed the Oil Drop Experiment? Robert Millikin
Who discovered the nucleus? Earnest Rutherford
Who formulated hypotheses and theories and performed experiments to explain his theories? John Dalton
Who proposed the Indivisible Sphere model of the atom? Democritus
Who is the Father of the Atomic Theory? John Dalton
Who was the first to assign symbols to elements and compounds? John Dalton
Created by: hansenc1