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Periodic Table of Elements
Unit 1 - 8.5ABC
Terms in this set (21)
Basic unit of matter
Positively charged particle in the nucleus of an atom, mass of 1 amu
a neutral subatomic particle in the nucleus of an atom, mass of 1 amu
negatively charged particle in electron cloud, mass of 0
center of an atom which is made up of protons and neutrons (positively charged)
area around the nucleus of an atom where the atom's electrons are found
Protons, Electrons, Neutrons
Electrons on the outermost energy level of an atom
How how an element behaves or acts when it combines with other substances.
Vertical column in the periodic table, tells valence electrons
A horizontal row of elements in the periodic table, tells # of electron shells
# of protons OR electrons
Number of protons and neutrons
Any substance on the periodic table that cannot be broken down into simpler substances
Elements that are good conductors of electric current and heat. make up the majority of the periodic table. malleable, ductile, high luster
Elements that are poor conductors of heat and electric current. can be a gas or solid, on the right side of the periodic table. dull, brittle
Elements that share properties of both metals and nonmetals.
can be drawn into wires
The way in which an element reflects light (shiny)
A material that allows heat and electricity to pass through it.
capable of being shaped/bent
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