This one is a bit tricky. ANALYZING DIFFUSION : Diffusion is the process in which molecules spread from an area of higher concentration to an area of lower concentration. A science class did an investigation to find out the effects of molecular concentration and temperature on diffusion. In this activity, you will analyze the experiment and draw conclusions from the data.

HYPOTHESIS: Increasing concentration and increasing temperature will increase the rate of diffusion.

In summarizing the data, the class ordered the beakers according to the rate of time it took for the water to become colored. The list is shown below.
F Beaker in which water became completely colored first
E
B
A
D
C Beaker in which water became completely colored last

1. Between the following beakers, A and B, which did diffusion take place at a faster rate and why?

2. Between the following beakers, C and D, which did diffusion take place at a faster rate and why?

3. Between the following beakers, E and F, which did diffusion take place at a faster rate and why?

4. What effect did temperature have on the rate of diffusion?

5. Which set of beakers – A and B, C and D, or E and F – served as the control in this investigation? How do you know?

6. What were the Independent Variables?

7. What was the Dependent Variable?

8. Why did the water in beaker F become colored the fastest?

9. Did the experiment prove the hypothesis?

10. What would happen if the concentration of potassium permanganate in beaker D was increased?