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Periodic table

Vocabulary

QuestionAnswer
valence shell Outermost shell of an atom
atomic mass Number of protons plus the number of neutrons
conductivity Ability for heat or electricity to flow through it
neutron Part of an atom with a neutral charge
electron Part of an atom with a negative charge
malleable Able to be flattened out
ductile Able to be stretched without breaking; not brittle
proton Part of an atom with a positive charge
luster Ability to reflect light
reactive Causes a chemical reaction and releases energy
family Also called group; columns on the periodic table (go up and down); Elements in a group have the same number of electrons in the outer level
period Rows on the periodic table (side to side); Each row represents the number of energy levels
Compound Combination of two or more elements that are chemically combined.
Anything on the periodic table is? An element
Groups Go up and down.(up is in group) show the number of valence electrons,18 total
Families another name for groups
Periods Go side to side, show the number of electron shells (or energy levels) 7 total
Elements that are most similar are in the same _________ Group
Mixture Combined, Cannot be separated
Created by: Montana285
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