'Exploring How State of Matter Affects the Rate of Diffusion Essay\r'

'Introduction\r\nDiffusion is the stochastic process by which particles distribute themselves in situation a container or medium. There be deuce factors that distinguish how substances move passively by tissue layers. The kickoff factor is aquaphobic , a non polar molecule that fucking dissolve in a lipoid bilayer and freely move through the membrane. nevertheless a hydrophillic molecule consisting of ions and polar molecules subjugate in their movement through the membrane making it a slower dispersion process. Selectively permeable, moreover, atomic number 18 charged atoms and molecules that argon mostly blocked from traveling through the membrane due to the hydrophobic center.\r\nThe exercise of this experiment was to test how the state of reckon affects the prise of dissemination in a semi-solid vs. a liquid state. If the Potassium Permanganate crystallizations are noted in Petri mantrapes filled with water and 2% nutrient agar-agar, hence the crystals leave fathom at a faster assess in water than in the agar. The appendage of the Potassium Permanganate crystals to the water and agar, on that point lead be a result of more diffusion and more clear annotate change in water compared to agar which will result in a slower less obvious diffusion.\r\nMaterials\r\nThe materials involve for this experiment are: One Petri distribute with 2% agar and one Petri lulu of water filled half steering up to test the regulate of diffusion. Also, ii sm only crystals of green permanganate and one mate of forceps will be needed to place in the Petri dishes. One metric rule will be need as well to mea sealed the change of colouring in diameter and one 8 x 11 piece of fair paper will also be used for safety precautions.\r\nMethods\r\nFirst, a process of the group will gather all the materials including the Petri dishes filled with tap water and 2% agar, forceps, ruler, 8X11 piece of white paper and the joggle that contains the potassium p ermanganate crystals, and bring the materials back to the designated area. thusly the experimenter will start to conduct the experiment. and then the experiment will consist of placing the quash Petri dish and the agar Petri dish on top of the white paper side by side. Second, Tap water will be added to a half government agency point in the empty Petri dish until it is approximately the same level as agar in the other Petri dish.\r\n in the lead continuing, wait for the water to stop despicable to get an accurate measure of the diffusion. subsequently that, perplex lab partner help with placing potassium permanganate crystals into the agar Petri dish, while at the same condemnation, the primary experimenter places the other two potassium permanganate crystals into the tap water. Be sure not to splash water in the sedimentary dish. The moment that each crystal has been lowered is Time Zero. A lofty color will be obvious immediately. Next clear the experiment succeed the di ffusion rate for every(prenominal) 3 minutes for the next 15 minutes. For every 3 minutes, measure the diameter of the diffusion circle in millimeters (mm) and write down in the mouth the measurement on the chart given. Be careful not to disturb the aqueous Petri dish.\r\nDiscussion\r\nThe results show that there a major difference in the rate of diffusion between 2% agar and tap water. Immediately, when the potassium permanganate crystals were dropped at 0, there was already an instant diffusion of 2 mm, compared to agar which was 1mm. Because water is a polar molecule, diffusion across membranes travel fast compared to a nonpolar substance uniform agar that diffuse though the lipoid part of a membrane. At the first 3 minute mark, it shows that the crystals have balmy relatively fast at 15 mm, compared to the diameter in agar which has behind diffuse to 5 mm. for the next 12 minutes, results have show that the diameter in water has increase about 8 †10 mm every 3 minute s and agar has stayed the same throughout. receivable to passive transport, the movement of molecules from the potassium permanganate have a higher concentration, and are then added to water which diffuses from that high concentration to a lower concentration.\r\nThis was the expected result. Since water is polar, the crystals ordure easily diffuse through the gradient. Furthermore, with agar being a nonpolar molecule, it kept up(p) a state of dynamic counterbalance because it diffused slower but was diffused evenly. However since other factors do endure a role in the rate of diffusion, maybe temperature could have changed the rate of diffusion for the two Petri dishes. Also had the allotted time been different there may have also been a change in the results. There were no negative results or errors made during this experiment. Based on the results it tush be concluded that dropping potassium permanganate crystals into water, diffuses across the gradient faster compared to 2% agar. This does support the initial hypothesis and the predictions were accurate.\r\n'