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Matter. Chapter two
quest on 5.19
37
Science
7th Grade
05/17/2009

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Term
how many states of matter are there?
Definition
four. liquid solid gas idk the other one
Term
how is the state of matter determined by
Definition
how fast particles move
how strongly they are attracted to eachother
Term
how do solids move?
Definition
vibrate
Term
how do liquids move?
Definition
slide
Term
how do gases move?
Definition
spread
Term
definite shape? no/yes?
solid
liquid
gas
Definition
solid. yes
liquid.no
gas. no
Term
definite volume? yes/no?
solid
liquid
gas
Definition
solid. yes
liquid . yes
gas.no
Term
crystalline
Definition
orderly 3-d arrangement of atom
Term
amorphous
Definition
not a particular ordered pattern- squishy
Term
properties of liquisd
Definition
surface tension, viscosity
Term
surface tension
Definition
a force acting on particles at the surface of a liquid causing spherical drops
Term
viscosity
Definition
liquids resistace to flow
Term
gases can change both blank and blank
Definition
volume and shape
Term
plasma
Definition
plasma is the state of voume that dosnt have a definite shape or definite volume. they conduct an electrical current and are affected by magnets
Term
define physical changes
Definition
a substance may change ffrom physical form to another with change in temperature
Term
what are the five changes of state
Definition
melting, sublimation, vaporazation, condensation, freezing
Term
define temperature
Definition
the measure of speed of particles / mass of energy
Term
emperature is measured using a what?
Definition
themometer
Term
temperature is measured in
Definition
degrees c.
Term
define heat
Definition
a transfer of enrgy that causes the temp to change
Term
define melting.
endo or exo.
Definition
the change of state from solid to liquid.
endo
Term
define freezing.
endo or exo
Definition
the change of state from liquid to solid
exo
Term
melting and freezing occur at the same temp called the
Definition
melting point. 0 c. or 32 f
Term
define vaporization
endo or exo.
Definition
change of state from liquid to gas
endo
Term
define condensation
endo or exo.
Definition
change of stat from gas to liquid.
exo
Term
what happens to temp during change of state
Definition
the temp is the speed of particles. when there is a change of state the speed of particles changes too.
Term
define boyles law
Definition
volume and pressure are inversely proportional=opposite
Term
what does boyles laws state?
Definition
when pressure increases, volumedecreases
Term
what does boyles laws state?
Definition
when pressure increases, volumedecreases
Term
boyles law examples
Definition
glove in bell jar. squeezing balloon. shaving cream
Term
what happens to the air particles when the pressure is decreased?
Definition
they spread out and become less dense.
Term
define charles law
Definition
volume and temperature are directly proptional=same.
Term
what do charles' laws state?
Definition
when temperature increases, volume increases.
when temperature decreases, volume decreases.
Term
charles law examples
Definition
collaspsing can. taking a balloon in cold. marshmellow.
Term
what happens to the particles when charles law takes place?
Definition
they get closer togehter.
Term
t/f. when gas law takes place, there are not the same amount of particles.
Definition
false. THERE ARRE THE SAME AMOUTN.
Term
why do gas laws only apply to gas?
Definition
because gases do not have definite volume so their particles can move closer together or farther apart.
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