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Atom Vocabulary

Vocab for the atom

neutrons neutral charge; inside the nucleus
Niels Bohr created the electron cloud model of an atom
nucleus middle of the atom
matter anything that takes up space and has mass
gas particles are far apart
3 states of matter solid, liquid, and gas
atom smallest particle of an element
proton positive charge; inside the nucleus
solid particles are close together; have a fixed shape
liquid particles are farther apart: move easily and quickly
electron negative charge; outside the nucleus on the orbit
What makes up matter? tiny particles
Created by: meadowbj