Experiment: Mentos & COCA COLA

Before this we acturely have a failure experiment on pepsi, yesterday. we are back. this time we are using 1.5 littel coca cola. Finaly we did it.

HOW DO I MAKE THIS WORK?
1) Gatherd the Mentos and soda drink (we choose COKE), place it on a flat surface.

2) Open the Mentos and place as many as possible inside the tube (we using a paper to make one.), making sure that they can easily slide out when the tube is tipped over.

3) Place the name card on the open side of the tube and turn the tube to face the bottle's open mouth. The only thing keeping the Mentos from falling into the bottle of COKE is the thin name card.

4) When everyone is ready, pull the namecard away and drop the Mentos into the bottle.


5) Run away, as fast as you can.


WHY DOES THIS HAPPEN?

Soda get its fizz from a gas known as carbon dioxide. When the carbon dioxide is pumped into the soda, water molecules cling to the gas and create tiny bubbles of gas in the liquid. The force holding the gas inside the water is known as surface tension.It takes a lot of energy to break the surface tension inside soda, but most of you have probably done this by dropping a can and opening it shortly afterwards.Mentos contains a chemical known as ARABIC GUM (this is the ingredient that makes the mint "chewy"). This ingredient causes the surface tension of the water molecules to break even more easily, releasing more carbon dioxide gas at an astounding rate!The gas causes pressure to rapidly build inside the bottle which thrusts the soda upwards in a wonderful fountain-like BLAST!

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