Diffusion Gizmo and Controlled Experiments exam
with question and answer 100% correct
C
Terms in this set (19)
Kelvin A temperature scale based on absolute zero
Absolute zero The coldest possible temperature, 0 Kelvin, that can be
reached. It is the hypothetical temperature at which all
molecular motion stops.
controlled experiment An experiment in which only one variable is changed
while keeping all other variables constant.
Ex: If you were investigating the effect of temperature
on the rate of diffusion, you would experiment with
different
temperatures, but leave the particle mass, wall size
and number of particles the same in each trial.
Diffusion Movement of molecules from an area of higher
concentration to an area of lower concentration
without the need of cellular energy
(a type of passive transport)
Why does diffusion occur? molecules constantly move and collide with each
other causing them to spread out in a region
dynamic equilibrium The end result of diffusion where there is continuous
movement of particles back and forth between
regions but the total number of particles in each
region remains roughly constant.
- a state of balance where the number of particles in
a region is fairly even. ** There is some fluctuations
as particles continue to move randomly.
with question and answer 100% correct
C
Terms in this set (19)
Kelvin A temperature scale based on absolute zero
Absolute zero The coldest possible temperature, 0 Kelvin, that can be
reached. It is the hypothetical temperature at which all
molecular motion stops.
controlled experiment An experiment in which only one variable is changed
while keeping all other variables constant.
Ex: If you were investigating the effect of temperature
on the rate of diffusion, you would experiment with
different
temperatures, but leave the particle mass, wall size
and number of particles the same in each trial.
Diffusion Movement of molecules from an area of higher
concentration to an area of lower concentration
without the need of cellular energy
(a type of passive transport)
Why does diffusion occur? molecules constantly move and collide with each
other causing them to spread out in a region
dynamic equilibrium The end result of diffusion where there is continuous
movement of particles back and forth between
regions but the total number of particles in each
region remains roughly constant.
- a state of balance where the number of particles in
a region is fairly even. ** There is some fluctuations
as particles continue to move randomly.
