the smallest unit of an element that maintains the proporties of that element
a subatomic particle that has a negative charge
in physical science, an atom's central region, which is made up of protons and nuetrons
a region around the nucleus of an atom where electrons are likely to be found
a subatomic particle that has a positive charge and that is found in the nucleus of an atom
atomic mass unit
a unit of mass that describes the mass of an atom or molecule
a subatomic particle that has no charge and that is found in the nucleus of an atom
the number of protons in the nucleus of an atom
an atom that has the same number of protons as the other atoms of the same element do but that has a different number of nuetrons
the sum of the numbers of protons and nuetrons in the nucleus of an atom.
the mass of an atom expressed in atomic mass units
the law that states that the repeating chemical and physical properties of elements change periodically with the atomic numbers of the elements.
the combining of atoms to form molecules or ionic compounds
an interaction that holds atoms or ions together.
an electron that is found in the outermost shell of an atom and that determines the atom's chemical properties
a bond that forms when electrons are transferred from one atom to another, which results in a postive ion and negative ion
the regular pattern in which a crystal is arranged
a bond formed when atoms share one or more pairs of electrons
the smallest unit of a substance that keeps all of the physical and chemical propeerties of that substance
a bond formed by the attraction between positively charged metal ions and the elctrons around them