Mentos Experiment Date: 11/5 Question: Which liquid will have the greatest reaction if we put Mentos in Coke, Diet Coke, Sprite, and Carbonated Water as measured by loss of mass? Materials: Mentos candy (28 pieces total) Coke (2 liter bottle) Diet Coke (2 liter bottle) Sprite (2 liter bottle) Carbonated Water (2 liter bottle) Test tube and index card Goggles

Procedures: Stick 7 Mentos in a test tube. (x4) Measure the mass of 4 bottles & Mentos. Open 4 bottles of soda/water. Drop Mentos into soda/water and move away quickly. Record qualitative data of reactions. Measure the new mass of each bottle.

IV: Types of liquid DV: Amount of mass lost Constants: 7 Mentos per test tube, 2 liter bottles, Mentos dropped in at the same time

Research: Ingredients of… Hypothesis: If we put Mentos in Coke, Diet Coke, Sprite and Carbonated Water, then ___________ because ________________________________. Coke Diet Coke Sprite Carbonated water Mentos

Data Table: Qualitative Data: Liquids Mass of Mentos Mass of Bottle Total Before Mass Total After Mass Mass Lost % of Mass Lost CarbonatedWater Sprite Coke Diet Coke

Mentos Experiment! No QOD! Get your notebook out and open it to the Mentos experiment. Make sure you have your coat or sweatshirt. If not, go get it before the bell! Make sure you take your notebook and a writing utensil outside with you (or you will be sent inside to the office to wait until we are done).

Power Conclusion: The purpose of the investigation was ___________. 1. Restate the purpose of the investigation or the question you asked. The purpose of the investigation was ___________.  2. Explain what you thought would happen using your hypothesis. I thought that ____________.  3. State whether your hypothesis is supported or not. I found out ___________.  4. Use your data (actual numbers from data table) to explain why the hypothesis was or was not supported. Example: The average distance was 35 cm and I thought it would go longer.  5. Explain any errors or possible errors in the lab. __________ could have affected my results because ________.  6. Connect your findings to the science concept you’re studying. The data proves ____________. (physical or chemical w/ reasons) The Law of Conservation of Mass does/does not apply because ___.  7. Future research/Improvements In the future, I could extend my research by __________. This experiment could have been improved by __________.

QOD #45 Was the Mentos experiment a physical or chemical change? Give multiple reasons for your answer. (Use RAP – or you will have to redo this one.)

Mentos Experiment Data – All Classes Liquids 1st Hour 3rd Hour 4th Hour 6th Hour 7th Hour Average of 5 classes Carbonated Water 0% 11.1% 10.1% 20.7% 22.9% Sprite 63.1% 64.9% 63.2% 64.0% 63.4% Coke 62.5% 60.5% 62.3% 64.8% 65.9% Diet Coke 68.1% 65.0% 62.8% 68.5% 66.1%

Make a Graph

QOD #46 What do you look for when deciding if an internet source is reliable or not? (Give several factors.)