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Aim: To find out which deshelled egg gains or loses mass the most when soaked in solutions of distilled water, coke and coke zero. Hypothesis: The deshelled egg soaked in the distilled water will gain the most mass. Independent variable: Liquid (distilled water, coke, coke zero) in which the deshelled egg is soaked in. Dependent variable: The mass the deshelled egg gains or loses. List of apparatus: 1. 5 circular containers 2. 1 big container 3. 3 beakers 4. 1 electronic balance 5. 2 rulers 6. 1 piece of string List of materials: 1. 4 eggs 2. 330 ml of distilled water 3. 330 ml of coke 4. 330 ml of coke zero 5. 640 ml of artifical vinegar Brief overview of method: i. Put all 4 eggs into the big container. ii. Pour 640ml of arificial vinegar into the big container. iii. Cover the container and leave it at the side of the class for approximately 24 hours (10:45am to 2:32pm the next day). iv. After approximately 24 hours (10 Feb), remove the eggs from the containers. v. Gently rinse the deshelled egg with water, and rub the surface of the egg to get rid of the powdery calcium carbonate still left on the egg. (at this point we broke one egg, therefore leaving three eggs) vi. Gently use a piece of tissue to dry the deshelled egg. vii. Put one deshelled egg into each container. Label them egg A, B and C. viii. Take the mass of the egg using the electronic balance, and the circumference of the egg horizontal-wise and vertical-wise. ix. Record this on a piece of paper. x. Measure 330 ml of distilled water, coke, and coke zero in a beaker. xi. Pour the three solutions into each container containing one egg at the same time. xii. Cover it with the cover, and leave it at the side of the class. xiii. The next day (11th Feb), remove the eggs from their respective containers. xiv. Take their mass and the measurements of the egg and record it on paper. Also take note of the way each egg feels and the change in colour. xv. Put each egg back into their correct containers, cover them, and leave them for another day. xvi. The following day(12th Feb), remove the eggs from their respective containers. xvii.Take their mass and the measurements of the egg and record it on paper. Also take note of the way each egg feels and the change in colour. xviii.Break open each egg and take note of the substances in the egg.
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