Ap Biology Lab - Diffusion And Osmosis Worksheet printable pdf download

Ap Biology Lab - Diffusion And Osmosis Worksheet

Name

Student Response sheet

Period

AP BIOLOGY LAB: DIFFUSION AND OSMOSIS

Predict what you think will happen during the experiment. (Think about which bags will

lose water and which will gain water.)

Table 2: Dialysis Tubing Mass in Various Solutions

Time in

Contents

Initial Mass

Final Mass

Mass

% Change in

% Change

Beaker

in Bag

(g)

Difference (g)

Mass

Class Average

(min.)

Distilled

Water

0.2 M

0.4 M

0.8 M

1.0 M

Graph the results for both your individual data and class average on graph paper. The

independent variable is on the X-axis, and the dependent variable is on the Y-axis

ANALYSIS

1. Explain the relationship between the change in mass and the molarity of sucrose

within the dialysis bag.

2. Predict what would happen to the mass of each bag in this experiment if all the bags

were placed in 0.4 M sucrose solution instead of distilled water. Explain your response.

3. Why did you calculate the percent change in mass rather than simply using the

change in mass?

Ap Biology Lab - Diffusion And Osmosis Worksheet