Osmosis in Potato Chips

... doing the first set of results I redid the experiment under exactly the same conditions. This gave me secondary set of results which gave me a more accurate view on the changes.

Precautions:

· As was stated in my planning section of the coursework, I had to keep all of the different non-variables the same, to make sure that none of them affected the results of the experiment in any way.

· Whilst cutting the potato, extreme care and precision had to be taken with the scalpel as it is very sharp and could easily cause a serious wound.

· The measurements for the solutions had to be perfect as to not change the out come of the experiment.

· I had to ensure that every time I handled the potatoes my hands were clean and dry. This was to stop any kind of contamination and made sure that I did not pass on any extra water onto the potatMain Tables of Results for all Concentrations 0.00m concentration mass before (g) mass after (g) change in mass (g) % change in mass

1

1.46

1.52

0.06

4.109589041

2

1.64

1.75

0.11

6.707317073

3

1.72

1.85

0.13

7.558139535

4

1.64

1.89

0.25

15.24390244

5

1.63

1.85

0.22

13.49693252

6

1.75

1.95

0.2

11.42857143

average

1.64

1.801666667

0.161666667

9.757408672

0.25m concentration

mass before (g)

mass after (g)

change in mass (g)

% change in mass

1

1.56

1.46

-0.1

-6.4102

2

1.66

1.64

-0.02

-1.2048

3

1.6

1.61

0.01

0.625

4

1.51

1.15

-0.36

-23.841

5

1.63

1.68

0.05

3.06748

6

1.34

1.39

0.05

3.73134

average

1.55

1.48833

-0.0616

-4.0053

0.5m concentration

mass before (g)

mass after (g)

change in mass (g)

% change in mass

1

1.65

1.45

-0.2

-12.121

2

1.66

1.52

-0.14

-8.4337

3

1.88

1.71

-0.17

-9.0425

4

1.42

1.36 ...