the basics
Elements found in group 1 of the Periodic Table
Alkali Metals
elements found in group 18 of the periodic table
noble gases
elements that do not resemble metals
non-metals
a solution of two or more metals
alloy
the center of an atom
nucleus
A group of atoms that share electrons.
Molecule
the attraction between atoms or ions
bond
one of seven horizontal rows in the periodic table of elements
period
a regular, patterned three-dimensional structure
lattice
a positively charged particle in an atom
proton
a chart that organizes all the elements into rows and columns
periodic table
elements with metallic and non metallic properties
metalloids
a formula that identifies which elements, and how many atoms or ions of each
chemical formula
elements found in group 17 of the periodic table of elements
halogens
atoms of the same element that have different atomic masses
isotope
a generalized explanation of a set of related observations or events supported by research and good arguments
theory
a generalized description stating that elements arranged in order of atomic numbers show a periodic repetition of properties
periodic law
an electric charge that an atom or group of joined atoms takes on when it loses or gains electrons
ion charge
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a negatively charged particle in an atom
electron
the total number of protons and neutrons in the nucleus of an atom
mass number
a neutral particle in an atom
neutron
the number of protons in an atom of an element
atomic number
a pure substance formed when non-metals combine chemically
molecular compound
a mass of an object in comparison to the mass of another object
relative mass