Effect of Coca Cola on meat experiment 1 draft 2

I made some changes to my experiment procedure as a felt that some parts of it could be improved on such as changing the cooking method of the chicken from boiling to steaming to reduce any water entering the pieces of meat during cooking through diffusion as this would affect my results obtained. I also changed the dimensions of the pieces of meat to be used in my experiment from 2cmx2cmx2cm to 1cmx2cmx2cm as I wanted to increase the surface area to volume ratio of the pieces of meat to enable more exposure of the pieces of meat to the Coca Cola. Thus as my procedure changed, so did the equipment I needed to use. Another part of my original procedure that I had to change was changing the cutting and measuring of the cooked pieces of meat from before they were cooked to after they were cooked. This is as I realized that the pieces of meat shrunk greatly when they were cooked, and shrunk at different rates. Thus cutting and measuring the pieces of meat before they were cooked would result in inaccurate results obtained due to pieces of meat of different sizes being used in my experiment. I also changed my procedure as a realized that some of the steps were not precise and clear enough thus I had to modify them.

My new procedure!

Step 1: Use the knife to cut out 2 pieces of chicken breast meat of approximately 1cmx2cmx2cm.

Step 2: Pour 250 ml of Coca Cola each into 2 bottles

Step 3: Pour 250 ml of Water each into 2 bottles

Step 5: steam 2 pieces of chicken meat of at least approximately 4cmx4cmx2cm until they are cooked throughout

Step 6: Cut out 2 pieces of chicken meat measuring approximately 1cmx2cmx2cm from the cooked pieces of meat

Step 7: Using a ruler measure the dimensions of each of the pieces of meat and record down each of their total surface area

Step 8: Pat pieces of meat dry lightly using a paper towel to remove any excess liquid then, using a weighing scale weigh each piece of meat and record their masses down

Step 9: Place one piece of raw chicken meat into a bottle of Coca Cola and the other piece of raw chicken meat into a bottle of water

Step 10: Place one piece of steamed and cut chicken meat into a bottle of Coca Cola and the other piece of steamed chicken meat into a bottle of water

Step 11: Close the bottles using the bottle-caps

Step 12: Leave bottles in a shaded area of room temperature for 48 hours

Step 13: remove pieces of meat from the bottles after 48 hours and weigh and measure them after patting pieces of meat dry lightly using a paper towel to remove any excess liquid 

Step 14: record data collected and organize data into a table

Step 16: repeat steps 1-12 with pork meat

Step 17: repeat steps 1-14 once more

New list of materials needed

- 8 empty drink bottles

- 1litre of Coca Cola

- 1litre of water

- pork

- chicken breast

- steamer

- knife

- ruler

- weighing scale

- calculator
- paper towels