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Ch7 & 8 Vocabulary

Ch 7 & 8 Vocabulary

Atom is the smallest piece of an element that still represents that element.
Electron is a particle with one negative charge.
Nucleus most of an atom's mass and positive charge is concentrated in a small area in the center of the atom.
Proton is an atomic particle that has one positive charge.
Neutron is a neutral particle that exists in the nucleus of an atom.
Electron Cloud is an area around an atomic nucleus where an electron is most likely to be located.
Atomic Number number of protons in an atom of an element.
Isotopes are atoms of the same element that have different numbers of neutrons
Mass Number is the sum of the number of protons and neutrons in an atom
Average Atomic Mass is the average mass of the element's isotopes, weighted according to the abundance of each isotope
Ion is an atom that is no longer neutral because it has gained or lost electrons.
Created by: Cesar Salas