Matter, etc

matter
has mass, takes up space
pure substance
matter with constant composition and properties
mixture
physical combo. of 2 or more pure substances with variable composition
element
pure substance (can’t be broken down further by ordinary, chemical means)
compound
chemical combination of 2/more elements (whole # ratio)
homogeneous
same properties throughout solution
heterogeneous
different properties throughout solution
physical change
change in physical properties; no new substance formation
physical properties
those which can be observed without forming a new substance
chemical change
results in formation of new substance with new chemical/physical properties
chemical properties
observed during the formation of a new substance
extensive properties
(physical) depend on sample size
intensive properties
(chemical) not depend on sample size, can be used to identify a substance
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