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Ch8Atoms/PeriodTable

8th grade science, periodic table, atoms

QuestionAnswer
negatively charged particle that orbits, moves around, the nucleus electron
substance that has only one type of atom element
the center of an atom nucleus
positively charged particle, found in the nucleus proton
a particle with no charge, found in the nucleus neutron
the number of protons (and electrons) in an atom atomic number
the number of protons and neutrons in an atom atomic mass
space where electrons are found shell
a horizontal row in the periodic table (running from side to side) period
a vertical column in the periodic table (running from top to bottom) group
shiny, good conductors of electricity and thermal energy metal
most reactive family of metals alkali metals
group 1 of the periodic table alkali metals
the russian chemist who first designed the periodic table Ditri Mendeleev
groups 3-12 of the periodic transition metals
group 18 of the periodic table noble gases
found on the right side of the zig zag line of the periodic table non-metals
semiconductors that act like metal or non-metals sometimes metalloids
found on the left side of the zig zag line of the periodic table metals
chemical properties of elements in the same ____ change in a predictable way as you move from one end to the other period
elements in a _____ have similar properties group
elements in the same period in the Periodic Table have the same number of shells
Created by: allison.teague on 2012-03-20



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