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Spurting Science: Erupting Diet Coke with Mentos - Scientific ...


Jun 14, 2012 ... Instead it is a physical reaction. ... While the soda is in the bottle, the gas is kept in solution by the ... The speed at which the Mentos falls through the soda can affect how ... Be sure to wear eye protection when putting the candies into the cola! ... Mentos versus crushed, compare warm versus cold Diet Coke.

Why do we hear a hissing sound when we open a coke bottle?


When the coke is opened, there is suddenly a great pressure differential. ... When you open the bottle the excess gas rushes out of the bottle and a hissing sound is heard. ... work at the Coca-Cola plant pump carbon dioxide into the Coke to carbonate it ... In nature, when we "bail" at the speed where the water level remains...

Chemical versus Physical Changes - GE.com


heat release, or burning are often indicators that chemical changes are ... interesting of these is the change in state, like the changes from solid to liquid to gas and ... Add the ice to the Erlenmeyer flask or glass bottle and place balloon on top ...

Physical Changes vs Chemical Changes Lab ... • Was this a physical


Is it a physical or chemical change and why? • What else have you ... Crumpling paper does NOT change the nature of the paper. ... It changes from a liquid into a gas (water vapor). This is .... Heat from the flame melts wax below the wick ... bottle. When you open the bottle you are changing the pressure, allowing the CO. 2.

How Does the Volume of Gas in a Pop Bottle Change on Opening


Chemical change ... When you open a bottle of soda does the air go in or out of the bottle and what is the volume of the air released or allowed in? ... Computing the final volume of the gas after the top is removed requires additional information. ... occurs so quickly that no heat flows between the gas and the surroundings.

Diet Coke and Mentos: What is really behind this physical reaction?


show in 1999 by chemistry teacher Lee Marek ... the solution. So when you pop the top, the equilibrium within the bottle or can is broken, and the concentrated carbon dioxide gas ... When the can is opened without shaking high pressure CO . 2 ... Coca-Cola Classic, Caffeine. Free Coca-Cola ... K changes with temperature ...

Chemistry and Chemical Reactivity 8th Edition.pdf - Chemistry 166 ...


Jun 21, 2013 ... Study online flashcards and notes for Chemistry and Chemical Reactivity ... N Answers to Chapter Opening Questions and Case Study Questions A-—• ... Physical and Chemical Changes § . .... of Transfer of Heat: Thermal Equilibrium A Closer Look: What Is Heat? .... Gas Laws and Chemical Reactions § .

Chemical reactions - Deakin University


In any chemical or physical change, the total amount of energy remains ... the reactants—heat is released to the surrounding substances. ... Combustion is a change of state of matter: solid or liquid to gas. ..... energies than the water molecules because of their greater speed and mass ...... over the mouth of the bottle. Up-end ...

Chemical Activities. Teacher - Eric


reactions, chemical energy and rates of reaction, chemistry around the house, chemistry .... Carla L. Clemens: Cover design and section opening pages .... How Much Gas Is in a Bottle of Cola? 5. 3. Solution of a Gas: What Happens During a Pressure Change? 8. 4. ... The Heat Is On with Zinc and Copper Sulfate. 119. 43.

Food Science: Why Carbonated Soda Explodes When Shaken | The ...


Jul 14, 2009 ... Carbonated drinks are made by forcing carbon gas into a beverage ... If you shake the bottle before opening it, some of the carbon that has ...