States of Matter Flashcard

change of state
a solid, liquid, or gas becoming something else; a liquid changing to a gas, for example
compound
homogeneous substance consisting of atoms of two or more elements, cannot be separated physically
evaporation
when a substance changes from liquid to gas
freeze
when a substance changes from liquid to solid
gas
matter with no fixed shape or volume, molecules spaced far apart and moving fast
liquid
matter with a fixed volume but no fixed shape, the molecules flow past each other
melt
when a substance changes from solid to liquid
molecule
group of atoms (the same or different) held together by chemical forces
phase change
a solid, liquid, or gas becoming something else; a liquid changing to a gas, for example
phase diagram
A chart which shows how the phase depends on various conditions of temperature and pressure
solid
matter with a fixed shape and volume; the molecules vibrate in fixed positions
sublimation
when a solid changes directly into a gas
substance
matter with defined chemical and physical properties; an element or compound
suspension
mixture that looks homogeneous when you stir it, but the solids settle out when you stop
temperature
A measurement of the average kinetic energy of the particles in a system
vaporization
when a substance changes from liquid to gas
vibration
very small, fast movements back and forth
volume
the amount of space an object takes up

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