Leslie

Michelle Kim, A-lan Woo, and Leslie Chan working together. Question - How does the temperature of soda water affect the solubility of carbon dioxide? Aim - To test out what effect will happen to the carbon dioxide gas if we change the temperature of the soda water. Independent Variable - Temperature of soda water Dependent Variable - Solubility of carbon dioxide Background - The first carbonated drinks were the naturally carbonated waters produced from mineral springs. In 1772 the famous English chemist Joseph Priestley invented a process for artificially carbonating beverages. The title of his report was "Directions for Impregnating Water with Fixed Air in order to communicate to it the peculiar Spirit and Virtues of Pyrmont Water, And other Mineral Waters of a similar nature." (Carbon Dioxide was called "fixed air" in those days.) His discovery was so well received that the Royal Society awarded him the Copley Medal. To produce the carbon dioxide Priestley dripped sulfuric acid onto chalk. Materials - Coca-cola, carbon-dioxide censor, electronic heater, 100ml beaker, thermometer. Procedure- 1. Wash Alan's face. 2. See her face. (with glasses) 3. Be suprised or shocked by her face without make up. 4. Take a picture of her and post it on fa