Purpose Procedure 1. 2. or Hypothesis 3. 4. Materials 1. 2. 3. Soft Drink Coca Cola Diet Coke Pepsi 4. 5. 5. Data Table Diet Pepsi Sunkist Prediction Result Mass Volume 6. Conclusions Soft Drink Product Label Information Coca Cola Classic Pepsi Serving Size:1 can = 355 mL Serving Size:1 can = 355 mL NUTRITION FACTS Calories 140 Fat 0g Sodium 50 mg Total Carb. 39g Sugar 39g Protein 0g NUTRITION FACTS Calories 150 Fat 0g Sodium 30 mg Total Carb. 41g Sugar 41g Protein 0g Sunkist Orange Soda Diet Coke Diet Pepsi Serving Size:1 can = 355 mL Serving Size:1 can = 355 mL Serving Size:1 can = 355 mL NUTRITION FACTS Calories 190 Fat 0g Sodium 45 mg Total Carb. 52g Sugar 52g Protein 0g NUTRITION FACTS Calories 0 Fat 0g Sodium 40 mg Total Carb. 0g Sugar 0g Protein 0g NUTRITION FACTS Calories 0 Fat 0g Sodium 45 mg Total Carb. 0g Sugar 0g Protein 0g Float or Sink: Modeling Science Fair Answer Sheet Float or Sink is a black-line master you can use to model the science fair project process with your students. When completed the legal page printout can be folded to look like a science fair project board with all the required project labels and information provided and practices by the student. Purpose: Students write the purpose of the experiment. To determine how the density, mass per volume, affects a can of soda in the water. Hypothesis: Student writes a prediction for what they think each can will do when placed in a container of water. (I think) The regular sodas will … or The diet sodas will … or All the sodas will … (student fills in the rest) Materials: Students lists the materials needed to complete the investigation. 1, clear plastic jar/container large enough to sink a 12 oz. Soda can under water 1, each of the following soft drinks in 12 oz. aluminum cans: Coca Cola Classic, Diet Coke, Pepsi, Diet Pepsi, and Sunkist Orange Soda 1, balance with gram weights (150 grams of weights) or electronic scale that measure in grams Black-line master for Float or Sink with soda Product Nutrition Label printed on the back Procedure: Students paraphrase and write the steps of the experimental test. 1. 2. 3. 4. 5. Use the Product Nutrition Labels to record the liquid volume in milliliters (mL) and mass of each soda (sugar) in grams (g). Predict which Sodas will Float or Sink Write your Hypothesis Statement (as a testable question) Test your Hypothesis by placing each can in the plastic container filled with water. Do three trials for each soda to confirm results. Dry and then weigh each can in grams to determine the total mass including the aluminum cans mass. (You could ignore this step because the mass of all the aluminum cans should be identical, but it may help some student’s ’explain why their hypothesis (predictions). Conclusion: Students explain their experimental results. Do your results support or reject your hypotheses? All the Sodas selected with sugar should sink below the water and the diet sodas should all float. The difference in density is caused by the additional mass caused by the sugar (and sodium*) in each beverage. *NOTE: Because the sodium (salt) in milligrams (mg) indicated on each nutrition label is less than 0.5 grams the additional mass it contributes is insignificant to the outcome of the experiment. So, not to confuse students with different metric units or conversions all they have to record is the amount of sugar in grams (Total Carb. refers to the carbohydrate/calories in the soda and so is equal to the amount of sugar in grams).