Embedded Files
RQ: What is the effect of the surface area to volume ratio on the % volume affected by diffusion after an 8-minute incubation of agar cubes in a 0.04M NaOH solution at room temperature?
RQ: What is the effect of the surface area to volume ratio on the % volume affected by diffusion after an 8-minute incubation of agar cubes in a 0.04M NaOH solution at room temperature?
Dependent Variable: % volume affected by diffusion
(measured after an 8-minute incubation of agar cubes in a 0.04M NaOH solution) Dependent Variable: % volume affected by diffusion
Independent Variable: SA/Vol rate of the agar cube (approximately 2, 3 and 6 cm^-1)
(changed by making agar cubes of different sizes)Independent Variable: SA/Vol rate of the agar cube (approximately 2, 3 and 6 cm^-1)
Instructions
Instructions
In this lab you will investigate the effect of the surface area to volume ratio in the process of diffusion. This is an IA-prep lab for ANALYSIS.
Lab template for ANALYSIS
Lab template for ANALYSIS
Click in the image below to make a copy of the lab template. Rename the file and include your name on it. This should be submitted through Turn It In Turn It In (for SL Biology - class ID: 21998963, key: ilovescience).
Say NO to plagiarism!
Say NO to plagiarism!
Remember to delete all the text provided for guidance from the template before submitting it to Turn It In. The document that you submit should contain ONLY your own work!
Raw data
Raw data
The RAW data tables should show ONLY the data that you collected while doing the lab. These are usually measurements of the dependent variable. In this case, we measured the total L, W and H of the three agar cubes and the L, W and H of the part of the agar cube NOT affected by diffusion.
Processed data
Processed data
The processed data tables should show all the calculations that are done in the lab. In this case, we calculated first the volume of the cube affected by diffusion, then the percent volume of the cube affected by diffusion and finally, the SA and the SA/Vol ratio of each cube.
Graphical representation of experimental data
Graphical representation of experimental data
The research question of this investigation was: How does the surface area of agar cubes affect the diffusion of a hydroxide solution, after an 8-minute incubation at room temperature?
In order to answer this question, we need to plot a graph that shows the relationship between the surface area to volume ratio of the agar cubes and the percent volume of the cube affected by diffusion. Because graphs are made from data tables, a new data table can be made to plot a graph.
Trials: group data
Trials: group data
In this lab each group did a single measurement of each of the three cubes, so there was n trials/repetitions per group. However, the class data was published so you can use the different group's data as trials/repetitions: each group is a trial! That can be used to calculate the standard deviation and plot a second graph!
Other resources
Other resources
SAtoVOL_Lab.docxSA to Volume Worksheet__Kerboodle.pdf
SA/Vol_RatioLAB.pdfSA to Vol LAB - student sheet.pdf
Report abuse