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Matter

6.5 Matter

TermDefinition
Element pure substance that cannot be broken down.
Atom smallest particle of an element, building block of matter
Proton positively charged particle in the nucleus
Neutron particle in the nucleus with no electrical charge
Electron negatively charged particle that moves around the outside of the nucleus
Molecule group of two or more atoms held together
Compound two or more elements chemically combined
Chemical bond electrical force that holds one atom to another
Period Table of Elements Chart of all know elements. 118 elements
Electron Shell first shell holds 2 electrons, second shell holds 8, the third shell holds 18
Atomic number number of protons in an element
Atomic Mass the number of protons plus neutrons in an element
Created by: user-1484046
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