Elephant Toothpaste

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Elephant Toothpaste. By: Ashley Morgan. Purpose. The purpose of this lab was to mix two solutions together and form a foam fountain. When performing this experiment, just by changing one material can give you similar results. Funnel. - PowerPoint PPT Presentation

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Elephant ToothpasteBy: Ashley Morgan

PurposeThe purpose of this lab was to mix two solutions together and form a foam fountain.

When performing this experiment, just by changing one material can give you similar results.FunnelA tube or pipe that is wide at the top and narrow at the bottom.It is used for guiding a liquid into a small opening.

Catalyst A catalyst is a substance that increases the rate of a chemical reaction without undergoing any permanent chemical change.In simpler words:Helps a reaction happen faster

Yeast Potassium IodideExothermicReleases heat and causes the termperature of the immeidate surroundings to rise.Procedure #1In a 16 oz bottle mix 8 drops of food coloring1 tablespoon of dish soap (dawn) a cup of 3% hydrogen peroxide3 tablespoons of water1 packet of dry yeast (red star)Watch reaction

Reaction!

ObservationsHydrogen peroxide molecules are very unstable and naturally decompose into water & oxygen gas.

Hydrogen Peroxide ->Water ->Oxygen2H2O22H2OO2ObservationsThe yeast acted as a catalyst to remove the oxygen from the hydrogen peroxide.Since it did this very fast, it created lots of bubbles!This solution had a scent of freshly baked homemade bread.Each tiny foam bubble is filled with oxygen.ObservationsThe food coloring changed the foam to a red-yellow color.The experiment created a reaction called an exothermic reaction.That means it not only created foam but also heat as well.It also created bubbles, which is a gas.Question #1Why is warm water best to use in this experiment?Warm water is best for yeast because yeast is a living organism that likes to live in similar temperatures to humantsPut the yeast in hot water and it diesPut the yeast in cold water and it will be too cold to reproduce.

What is actually happening?Hydrogen peroide is water with one extra oxygen. When yeast is added, it acts as a catalyst to split the hydrogen peroxide into water & oxygen.Bubbles of oxygen are trapped in the soap, which transforms into the foam fountain.The product formed is just soap, water, and oxygen.Procedure #2Mix in a 16 oz bottle40 ml of dish soap (dawn)80ml of 3% hydrogen peroxide1 tablespoon of potassium iodide8 drops of food coloring3 tablespoons of warm waterWatch reactionReaction!

Observations The overall equation for this reaction is:

The dishwashing detergent captures the oxygen as bubbles.Food coloring changed the foam to a blue-green color.

2H2O2 2H2O (liquid)O2 (gas)ObservationsThis had a soapy scent of apples due to the dishwashing soap.The experiment created an exothermic reaction as well.The bottle was warm as well.Bubbles were produced.Similarities DifferencesThe both started producing foam right away once the hydrogen peroxide was added.The bottles was warm.Bubbles were produced.

ScentsApplesBreadPotassium Iodide experiment looked watery rather than bubblyConclusionThis experiment used hydrogen peroxide and potassium idodie/yeast mixed with dish soap and water. If you add all these together, the hydrogen peroxides decomposion is sped up the catalyst. Oxygen is given off and forms foam with the dish soap.The foam pushes up in the bottle and comes out the top looking like toothpaste.Works Citedhttp://www.using-hydrogen-peroxide.com/elephant-toothpaste.html

http://chemistry.about.com/od/chemistrydemonstrations/a/elephanttooth.htm

http://www.sciencebob.com/experiments/toothpaste.php

http://www.wikihow.com/Make-Elephant-Toothpaste