How to Write your Own Oringinal Lab Report Osmosis aand Diffusion
Osmosis and Diffusion Lab Report – Some specific guidelines Each section of your lab report needs a heading, like the ones I have used below. Introduction: In your first paragraph, define some terms that are important to this lab: diffusion, osmosis, hypertonic, and hypotonic. Use your textbook, lab manual, or any other secondary source and be sure to cite the source of your definitions correctly. In the case of your lab manual, I would expect to see (Ammerman and Chippendale, 1996) following the definitions, probably once at the end of the paragraph. ... I would suggest that you write them in a form like this: “When a potato core is submerged in 20% NaCl solution, I hypothesize (believe, predict, think) that the potato core will lose mass. ... You will have quite a few hypotheses for this lab because there are four parts. ... For the second part, osmosis and artificial membranes, you can predict the four solutions in one hypothesis: you may predict that the solutions will gain mass and that the one that is most concentrated will gain the most. You should write a separate hypothesis for each of the two controls. In the third part, Differential Diffusion, you need to predict if starch or chloride will be able to diffuse out of the osmometer. In the fourth part, Diffusion in a Solid, you need only one hypothesis relating molecular weight of a substance to the distance it would travel across the agar.