Design Lab: Factor Affecting the Rate of Diffusion
Diffusion is the movement of a substance from an area of high concentration to an area
of low concentration.
High Concentration!
!
!
!
!
Low Concentration
Diffusion will continue as long as there is a concentration gradient (a difference in
concentration). Diffusion occurs as a result of molecular motion. Factors that affect
molecular motion will therefore affect the rate of diffusion.
What are some of these factors?
In this lab you will:
identify one factor that affects the rate of diffusion
develop a hypothesis that predicts the relationship between your identified
factor and the rate of diffusion
design a laboratory procedure that can test your hypothesis
perform the experiment and collect sufficient data to support or refute your
hypothesis
Materials list and Procedure due on Tues. Sept. 24
Lab time provided Sept. 30 - Oct. 3
Due
Oct. 8,
2013
Graphs must be
computer generated
Marked for Design, Data
Collection/Processing
and
Conclusion/Evaluation