The Effect of Concentration on Osmosis in Potatoe Chips
Studying the change in osmosis in potato chips placed in sugar
solutions.
Observation:
I have noticed that potato chips decrease in mass when they are in a
high concentration of sugar solution and increase in mass when they
are in a low concentration of sugar solution.
Hypothesis
· A potato chip left in a low concentration of sugar solution will
gain mass where as a potato chip left in a high concentration of sugar
solution will lose mass.
Preliminary work
Before conducting the experiment I carried out some smaller
investigations, to determine how to perform the experiment.
I placed 3 half potatoes in water, having sliced off the bottom and
bored a hole in the centre I filled one with salt, one with sugar and
left one empty to act as a control.
We set the apparatus out like this:
[IMAGE]
(A cross section)
I left the experiment for two days. I found that the potato with sugar
in it had a dark brown liquid in it and the control potato had dried
up. This experiment showed osmosis, where water moves from a dilute
solution to a more concentrate solution.
To decide what to measurements to use for the main investigation I did
some additional experiments.
To decide what % sugar solution I should use. I made up several sugar
solutions, I weighed and placed a small potato chip in each, I left
the experiment for 1hour, I weighed them again. When the solution was
more than 20% it was saturated so I used 5 different solutions (0%,
5%, 10%, 15%, 20%)
MAIN INVESTIGATION
Variables
· The independent variable will be the concentration of the sugar.
· The Dependant variable will be the density (in g/cm3) of the potato
2. Drop a gummy bear into each of your prepared beaker or cup and place the beaker or cup
Investigation of the Concentration and the Effect of Sucrose on Osmosis in Apple and Potato Tissues
The potato tubes in higher concentration sugar solution will shrink
* Note the mass down in the table at the end of the first page.
When I am not using them I will place them away from my experiment and
molecules go in and out of the cell. There is no net movement of water
I am going to carry out an experiment to measure the change in mass of
Investigate the Osmosis of Potato Cells in Various Salt Solutions. Introduction I have been asked to investigate the effect of changing the concentration of a solution on the movement of water into and out of potato cells. I will be able to change the input of my experiment. The input variable is the concentration of the solution.
The Effect of Water Concentration on the Mass of Potato Tissue Aim: The aim of this investigation is to discover the effect of water concentration on the mass of potato tissue, and also to investigate the movement of osmosis through potato tissue. Scientific Knowledge: When a substance such as a sugar dissolves in water, the sugar molecules attract some of the water molecules and stop them moving freely. This, in effect, reduces the concentration of water molecules.
Type of tissue- this will be controlled by using only one type of tissue, which is the potato
The potato famine of 1846 was one of the biggest natural disasters in Irish history. The “explosive disease” said William Fry, Ph.D., caused by Phytophtera infestans, is a condition that prevents growth and destroys the plant by disease. P. infestans is a fungus-like pathogen that infects and destroys the leaves, stems, potato seed and the potato itself, turning it black and slimy (Craig, 1998). The first signs of blight are when leaves get brown specks on them that start to get white, hairy growth around them (Damsker, n.d.). In addition, leaves and stems withered very quickly. This if followed by a terrible smell. It spreads as a spore and grows rapidly in moist, warm and humid conditions. Today, the blight disease still affects potato crops. However, an application of the plant fungicide, metalaxyl, or copper sulfate mixtures and pesticide will prevent and eliminate or, at least, decrease the possibility of its appearance (Daly, 1996). In fact, according to Gibbon’s article in 2013, the pathogen and its host of dried leaves ar...
Measuring cylinder to measure small amounts of fluids. Pipette to gather small amounts of fluids. Test tube holder to hold test tubes. 2. Molar Salt solutions to submerge potato chips in.
3rd create wells: put a comb template in middle of the tray; wait until the mixture becomes solid. After,
water in the potato, then the water will go out of the potato and into
Equipment Potato, Borer, Beakers, Measuring Cylinder, Stopclocks, Distilled Water, Electronic Balance, Salt solutions of various concentrations. Diagram [IMAGE] [IMAGE] [IMAGE] When we leave the potato in the solution for the allocated time, water