Coke Density Lab

COKE DENSITY LAB

Problem: Cans of Diet Coke and Regular Coke both have the same volume and the same amount of liquid inside them. Do these cans with liquid coke have the same Mass and Density?

1) Predict what will happen when a can of Regular Coke is placed in the water container: ______. 2) Place a can of Regular Coke in the container of water. Describe what happens: ______. 3) Predict what will happen when a can of Diet Coke is placed in the water container: ______. 4) Place a can of Diet Coke in the container of water. Describe what happens: ______. 5) Find the Mass of each can: Regular Coke=______Diet Coke=______6) Record the Volume of each can: Regular=______Diet=______7) Calculate the Density of each can: Regular=______Diet=______8) What ingredient is in the Regular Coke and not in the Diet Coke, giving it more mass? ______9) How many grams of sugar are in a can of Regular Coke? ______10) What is the mass of one sugar cube? ______(______sugar cubes/can) 11) How does the mass and density of Regular Coke differ from the mass and density of diet coke? Explain why they differ. ______

Unit 2 (Ch. 3) Structure of Matter 08/20/09 ______COKE DENSITY LAB ANSWER KEY

1) Predict what will happen when a can of Regular Coke is placed in the water container: ____Answers will vary (1 pt.)______. 2) Place a can of Regular Coke in the container of water. Describe what happens: _____The can of Regular Coke sinks in water (1 pt.)______. 3) Predict what will happen when a can of Diet Coke is placed in the water container: ____Answers will vary (1 pt.)______. 4) Place a can of Diet Coke in the container of water. Describe what happens: ____The can of Diet Coke floats in water (1 pt.)______.

5) Find the Mass of each can: Regular Coke=~385.5g(1 pt.) Diet Coke=~370.5g(1 pt.) 6) Record the Volume of each can: Regular=355 mL (1 pt.) Diet=355 mL (1 pt.)

7) Calculate the Density of each can: Regular=~1.09g/mL (1 pt.) Diet=~1.04g/mL (1 pt.) 8) What ingredient is in the Regular Coke and not in the Diet Coke, giving it more mass? _____Sugar (1 pt.)______9) How many grams of sugar are in a can of Regular Coke? __~ 39 g (1 pt.)___ 10) What is the mass of one sugar cube? ~ 3.5 g (1 pt.) (~ 11.1 sugar cubes/can) 11) How does the mass and density of Regular Coke differ from the mass and density of diet coke? Explain why they differ. Regular Coke has greater mass and greater density than Diet Coke. (1 pt.) This is because Regular Coke has an added ingredient, sugar, not found in Diet Coke that increases its mass and therefore, density. (1 pt.) Grading Scale

(15 pt.s Possible) A = 15 – 14 B = 13 – 12

Unit 2 (Ch. 3) Structure of Matter 08/20/09 C = 11 D = 10 – 9 F = 8 or less

Unit 2 (Ch. 3) Structure of Matter 08/20/09