Osmosis

Osmosis

Introduction

I obtained my scientific knowledge from the "AQA science: double award

modular." This is an experiment that will explore the osmosis theory

To make this experiment safe I will wear goggles to protect my eyes

and also will make sure that when using the borer to cut the potato I

have a white tile underneath.

The experiment will be a fair test as I will keep the weight of the

cut potato the same throughout the water and sugar solutions. I will

try to keep the potatoes surface area and volume the same. I will make

sure that both pieces of potato are placed in their solutions at the

same time and pulled out together. I will make the weight of the

potatoes the same by using the top pan balance and keeping the weight

roughly the same through out the different potatoes. I will measure

the potatoes to 2 decimal places (g). I will make sure the experiment

is fair by completely submerging both potatoes under their solutions

so they all have the same chance of releasing and taking in water or

sugar solution. When repeating the experiment to get a more accurate

result I will make sure I use the same controls. I will be sure to

have a different test tube as some of the solution maybe left in the

test tube after the last experiment.

I predict that when the potato chip (in high concentrated sugar) is

placed in the sugar solution it will either lose or gain in weight. As

the potato is in a concentration that is higher in water than itself

it will gain weight and when a potato is in a concentration that is

lower in water than itself will lose weight. This is due to osmosis.

Osmosis is the diffusion of water from a...

... middle of paper ...

...also have an assistant to help me remove and

place the potatoes in the solutions so that they all had equal amounts

of time in their solutions. I can not make my experiment perfect as

the are some limitations to my equipment.

To obtain more evidence with osmosis I could improve certain addition

aspects like the amount of solution in the test tubes, so that you

could get results on whether the amount of solution affects the amount

of osmosing a potato chip can do. Some potatoes could have more sugar

in than others, so to extend my investigation I could produce results

on which potatoes have more protein in. I could add additional

information about the time it takes for osmosis. I could retrieve

information on the time it takes for the potato chips to reach its

limiting point that is if there is a limiting point.