States of Matter Flashcards
Fluid
a form of matter that flows
when any force is applied, no
matter how small. Liquids and
gases are fluids.
Liquid
phase of matter that can
flow and change shape but has
constant volume.
Gas
phase of matter with high
energy molecules that can expand
to fill a container.
Pressure
a distributed force per
unit area that acts within a fluid.
Intermolecular Forces
forces between separate atoms and
molecules that are attractive at a
distance but repulsive at close
range
Melting Point
the temperature
at which a substance changes
from a solid to a liquid.
Boiling Point
the temperature
at which a substance changes
from a liquid to a gas.
Evaporation
change from
liquid to gas at a temperature
below the boiling point.
Condensation
change from gas
to liquid at a temperature below
the boiling point.
Convection
the transfer of heat through the motion of fluids such
as air and water
Solid
a phase of matter with a
definite shape and constant
volume.
Strength
the ability to maintain
shape under the application of
forces.
Elasticity
the ability to be
stretched or compressed and then
return to original size.
Brittleness
the tendency to
crack or break; the opposite of
elasticity
Ductility
the ability to bend
without breaking.
Crystalline
solids that have an
orderly, repeating pattern of
molecules or atoms.
Amorphous
solids that do not
have a repeating pattern of
molecules or atoms.
Polymer
material in which
individual molecules are made of
long chains of repeating units
Heat Conduction
the transfer of
heat by the direct contact of
particles of matter.
Thermal Equilibrium
a condition where two substances in physical contact have the same temperatures and no heat is exchanged
