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53 Cards in this Set

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metastable
stable if undisturbed, can occur in long lasting amourphus form
hydrogen bond
the attractive force b/w hydrogen atoms that is not a n actual chem. bond
amorphus
without crystalline form
dynamic equilibrium
two opposing charges are occuring at the same rate
Kinetic Energy
the amount of energy an object has because of its motion
saturated
when a substance in the vapor state it is said to be this
enthalapy of fustion
the energy req'd to melt one gram of a spec. substance
hydrated ions
ions that are chemically bonded to water molecules
mesamorphic
substances in liquid crystals
vapor
the gaseous state of substances that are lizuids or solids at rm. temp
mean free path
the avg. distance a molecurle travels before colliding with a molecule
crystal
a rigid body in which particles are arranged in units which form a repeating pattern
body centered cubic
centered in the middle
plasma
form of matter, ionized gas
enthalapy of vaporization
the energy req'd to vaporize one gram of a substance at its boiling point
capillary
a tube that has a hair thinb internal diameter
pressure
the force of collision with the walls of a container
pascal
the pressure of one newton per sq. meter
hygroscopic
looks wet, a substance with strong attraction for water
phase diagram
shows the states of matter in a system are affected by changes in temp and pressure
doped
adding impurities to form a semiconductor
critical temp
the temp at which no amt. of pressure will result in liquefying the gas
simple cubic
non centered
capillary t
the rising of water through a tube because of its attrractive force to the edges
volatile
a liquid that boils at a low temp and evaporates rapidly at rm. temp
normal boiling point
the temp at which vapor pressure is equal to standard atmospheric pressure
dislocations
errors in how the unit cells are joined
liquid crystals
some solids lose their crystal shape in one or two dimensions at the melt. pt. at spec. higher temps, the rest will be cestroyed and this is formed between the two temps
liquefaction
the condensation of substances that are normally gasses
The standard
101.35 kPa
triple point
all three states are in equilibrium at this temp
sublime
to change directly from a solid to a gas
manomter
an instrument to measure the thinness of a gass
Anhydrous
without water
hexagonal closest packing
type of packing found most frequently in metals at rm. temp
space lattice
the third arrangement of unit cells repeated over and over in a definite geometric arrangement
face centered cube
centered like the edges of a dice
barometer
a closed arm manometeer to mesure the heaviness of atmospheric pressure
absolute zero
the temp at which all molecular motion should stop
cubic closest packing
fcc same
network crystal, macromolecule
an entire crystal
reversible change
liquid > gas, liquid < gas,
Liquid<>gas
isomorphus
crystals of diff. solids with same structure and shape
viscosityh
the resistance of a liquid to its flow
unit cell
the simplest repeating unit
equilibrium
there is a constant number of molecules in the solid or liquid or vaper phase
polymorphus
a single substance having 2 or more crystalline shapes
kelvin scale
a temp scale based on abs zero in which zero kelvin=abs zero
deliquescent
a subst. that is so hygroscopic that it takes up enough water from the air to dissolve and form a liquid solution
Kinetic Theory
Explains the effects of temp. and pressure on matter
sublimations
a substance which goes directly from solid to a gas
surface tension
apparent elasticity of a substance
melting point
the temp at which the vapor pressure of the solid and the vapor pressure of the lizuid are equal