Lecture 2: The Science of Matter Flashcards
All matter is either (2)
-pure substances
-mixtures
pure substances are either (2)
-element (identical atoms)
-compound (2+ elements, combined chemically)
mixture are either (2)
-homogenous (evenly distributed)
-heterogenous (unevenly distributed)
atoms with charges
monatomic ions
molecules with charges
polyatomic ions
defined vol & shape? solids?
yes and yes
defined vol & shape? liquids?
vol yes, shape no
defined vol & shape? gases?
no and no
Chemisty is
the study of the COMPOSITION, STRUCTURE, and PROPERTIES of matter and its CHANGES
energy is
the capacity to do work
work is
the exertion of a force through a distance
gas -> solid
deposition
gas-> liquid
condensation
liquid-> solid
freezing
solid-> liquid
melting