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Basics of atomic structure and the periodic table

Two subatomic particles found in the nucleus protons and neutrons
Subatomic particles with a positive charge protons
Subatomic particle(s)identified by the atomic number for a neutral atom proton or electrons
Subatomic particles with a negative charge electrons
Decimal number in the periodic table square atomic mass
Visually shows the number of valence electrons as dots around the chemical symbol of an element Lewis Dot diagram(s)
whole number in the periodic table square atomic number
building blocks of elements atom
found inside the nucleus, have a positve charge, and a mass of 1 amu protons
Used to identify the number of energy levels for an atom period
type of matter composed of only one type of atom element
type of matter where two or more elements are chemically bonded together compound
only metal touching the metalloid staircase aluminum
Elements in group 2 alkaline earth metals
Elements with similar chemical properties are found in the same.... group
only metal in liquid state at room temperature mercury
maximum number of electrons held by the second energy level eight
an atom with a change in electrons but constant proton count ion
an atom with the same proton count but a change in mass due to a change in neutron count isotope
Elements in group 17 halogens
subatomic particle count found by subtracting the mass number and atomic number neutrons
Elements in the detached rows at the bottom of the periodic table rare earth or inner transition metals
electrons found in the last or outermost energy level valence electrons
The dots in a Lewis Dot diagram valence electrons
atomic number represents this particle in a NEUTRAL atom electrons
small, dense core of the atom nucleus
Elements in group 18 noble gases
Maximum number of electrons found in the third energy level eighteen
Maximum number of electrons found in the fourth energy level thirty-two
only non-metal on the left side of the periodic table; may have either a +/-1 charge hydrogen
special name for any particle found in the nucleus nucleons
subatomic particles with a mass of 1 amu and no charge neutrons
rounded version of the atomic mass;sum of protons and neutrons for one isotope mass number
Maximum number of electrons in the energy level closest to the nucleus two
Elements in Group 1; except hydrogen Alkali metals
Chemically inert or unreactive elements because they have a complete valence shell noble gases
elements found in groups 3 through 12 transition metals
smallest form of matter atom
Most active non-metal element fluorine
Most active metal element cesium
only non-metal liquid at room temperature bromine
Subatomic particle with a negative charge and essentially no mass electron
vertical columns of the periodic table groups or families
horizontal rows of the periodic table periods
Identifies the valence electron count for an element except the transition metals group number
Created by: wrightch