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Chapter 9 Vocabulary

Science

TermDefinition
Atom The Smallest Piece of an element that still represents that element
Electron A Particle with one negative charge
Nucleus An Atoms Mass and Positive Charge
Proton An Atomic Particle that has One Positive Charge
Neutron A Neutral Particle that Exists in the Nucleus of an Atom
Electron Cloud An Area Around an Atomic Nucleus Where An Electron Is Most Likely To Be Located
Atomic Number The Number Of Protons In An Atom
Isotopes Atoms of the same element that have different numbers of Neutrons
Mass Number The Sum Of The Number Of Protons and Neutrons in an Atom
Average Atomic Mass The Average Mass Of The Elements Isotopes, Weighted According to the Abundance of each Isotope
Radioactive Elements That Spontaneously Emit Radiation
Nuclear Decay A Process That Occurs When An Unstable Atomic Nucleus changes into another more stable Nucleus by Emitting radiation
Ion Is An Atom That Is No Longer Neutral Because It Has Gained Or Lost Electrons
Created by: Hudackaywbasd
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