Potato lab

Potato osmosis experiment results

Which way did the water move? If we take seawater as an example of a solution, the salt is called the solute the particles that are dissolved and the water is the solvent the liquid that dissolves the particles. Osmosis is the key to understanding this issue. Sixth, excess water from the potatoes is not completely shaken off, causing slight, extra weight on the weighing scale. Click here to go to the calculator page, and thanks to the University of Oklahoma for this useful tool! The one in the tap water solution, in contrast, will actually swell slightly, indicating that it is taking in water. Being able to find the isotonic point of a particular thing is important, especially for animals whom lacked cell walls as they could either shrink with hypertonic solution, or explode with hypotonic solution. What about the temperature of water?

Flexibility of the slices did not change much, those exposed in hypotonic solutions became slightly tougher not easily bentthose in hypertonic solutions became slightly more flexible; as cells exposed to hypotonic solutions will carry more water, thus expanding its size may reduce the space in between the potatoes; those exposed to hypertonic solutions shrinks in size and increases the spaces in between each cells, with extra spacing, they are more flexible when bent.

More water molecules occupy more space - volume - and push against the cell membrane and the proximate cellulose cell wall. When solute concentrations are the same on both sides of the cell, there is no net water movement, and the cell is said to be in an isotonic environment.

The cell may even shrink if the turgor pressure dminishes further.

osmosis potato lab report introduction

Prepare six small potato cubes with no skin that are all about equal in size approximately 5 millimeters in length, width and height and blot them dry on a paper towel. Related documents. Calculate the amount of salt needed for each concentration starting from 0 mol of salt used to 1 mol, with each incensement of 0.

potato osmosis experiment method

Semi-permeable membrane: a layer that only certain things can go through. Sixth, excess water from the potatoes is not completely shaken off, causing slight, extra weight on the weighing scale.

Weigh each strip and measure each potato strip, recording the final mass and length. The scale of both axis was made to reduce the scaling to as little as possible without complicating the scaling, resulting in a decently sized graph to which we could approximate the isotonic point up to thousandth place.

osmosis potato experiment salt solution results

To make a 0. Blot means just gently remove the surface water; no need to squeeze them!

Potato osmosis lab worksheet answers

Flexibility of the slices did not change much, those exposed in hypotonic solutions became slightly tougher not easily bent , those in hypertonic solutions became slightly more flexible; as cells exposed to hypotonic solutions will carry more water, thus expanding its size may reduce the space in between the potatoes; those exposed to hypertonic solutions shrinks in size and increases the spaces in between each cells, with extra spacing, they are more flexible when bent. This strip as the control and theoretically does not change in texture. Prepare all 6 ml-beakers, rinse them with water, then fill them up to approximately ml each 6. Third, used glass stirrers was not cleaned after used for a solution, resulting in leakage of other solutions that would alter the actual concentration for the solution being mixed. Osmosis is a property of matter that deals with diffusion; a spreading out of particles from high concentration to low concentration Basically, more stuff balances out with less stuff… like spraying a bunch of perfume in one place? To make a 0. Overall the graph shows a negative linear relationship between percentage-weight-change over molar concentration, thus as percent weight change increases, molar concentrations decreases and vice versa; thus proving my hypothesis to be half correct. Semi-permeable membrane: a layer that only certain things can go through.
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