the smallest particle of an element that still retains the properties of the element
positively charged center of an atom the contains protons and neutrons and is surrounded by a cloud of electrons
particle inside of an atom that has a charge of 1+
neutral particle inside the nucleus of an atom
particle surrounding the center of an atom that has a charge of 1-
area around the nucleus of an atom where the atom's electrons are most likely to be found
number of protons in an atom's nucleus
Atomic Mass Unit (amu)
unit of measurement for atomic particles
sum of the number of protons and neutrons in an atom's nucleus
atoms of the same element that have different numbers of neutrons
Average Atomic Mass
weighted-average mass of the mixture of an element's isotopes
organized list of all known elements that are arranged by increasing atomic number and by changes in chemical and physical properties
vertical column in the periodic table
horizontal row in the periodic table
element that typically is a hard, shiny solid, is malleable, and is a good conductor of heat and electricity
able to be rolled of hammered into thin sheets
able to be drawn into wires
material in which electrons can move easily
element whose nucleus breaks down and emits particles and energy
metals in Groups 3 through 12 of the periodic table
first row of inner transition metals listed below the periodic table that includes a series of elements with atomic numbers of 58 to 71
second row of inner transition metals listed below the periodic table that includes a series of elements with atomic numbers of 90 to 103
element that usually is a has or brittle solid at room temperature, is not malleable or ductile, is a poor conductor of heat and electricity, and typically is not shiny
consists of two atoms of the same element
"salt former"; has seven electrons in the outer energy level
have eight electrons in the outer energy level; not very reactive
element that shares some properties with metals and some with nonmetals
different form of the same element having different molecular structures
materials having conductivity properties between metals (good conductors) and nonmetals (insulators) and having controllable conductivity parameters
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