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heterogeneous
a mixture in which the uneven texture of the material can be detected TERM 2
homogenous
DEFINITION 2 a mixture that consists of two or more substances in the same phase TERM 3
chemical bonds
DEFINITION 3 A chemical bond is an attraction between atoms that allows the formation of chemical substances that contain two or more atoms. TERM 4
precision
DEFINITION 4 indicates how well several determinations of the same quantity agree TERM 5
accuracy
DEFINITION 5 agreement of a measurement with the accepted value of the quantity.
experimental error
Error = experimentally determined value - accepted value TERM 7
percent error
DEFINITION 7 Percent error = error in measurement/accepted value x 100% TERM 8
isotopes
DEFINITION 8 Isotopes are variants of atoms of a particular chemical element, which have differing numbers of neutrons. TERM 9
percent abundance
DEFINITION 9 Percent abundance = number of atoms of a given isotope/total number of atoms of all isotopes of that element x 100% TERM 10
atomic weight
DEFINITION 10 Atomic weight is a dimensionless physical quantity, the ratio of the average mass of atoms of an element (from a given source) to 1/12 of the mass of an atom of carbon-12 (known as the unified atomic mass unit).
