The History of The Atom Crossword

Said that matter is formed of smaller pieces that could not be cut into smaller parts
Discovered the electron; maker of the plum pudding model
The year the electron was discovered
Proposed that electrons move around the nucleus in specific layers
Bombarded a gold film with Alpha Particles
Discovered neutrons
Said atoms are tiny, invisible particles; atoms of one element are all the same; atoms of different elements are different
Found charged particles, were not called protons yet
The year that neutrons were discovered
The year that charged particles were discovered
The smallest basic unit of a chemical element
Positively charged particle; located inside the nucleus of an atom
Neutral particle; located inside of the nucleus of an atom
Negatively charged particle; located on orbitals
Defined atom as the part that cannot be divided
Main part of the atom; contains protons and neutrons
Origin of the word atom; comes from the Greek meaning indivisible
Where electrons are located
Elements that have a different amount of neutrons but the same amount of protons and electrons
Created by Niels Bohr; the common diagram for an atom