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Atomic Theory

Across
Subatomic particle that weighs the least
Smaller than an atom
Created Nuclear Model of Atom
Represents atomic number
Expanded on the Bohr model
Most basic unit of a element
Credited with creating periodic table
Protons + Neutrons
Group 7 on periodic table
Said there were 4 elements: Earth, Air, Fire, and Water
Center of atom (protons and neutrons located)
Down
Negative charge
Created the Billiard Ball Model
All matter consists of...
Positive charge
Used Gold Foil Experiment
Forms full octet
Who rejected Aristotle's idea
No charge
Substance that can't be broken down further