Elephant's toothpaste

Elephant toothpaste is a foam substance caused by the rapid decomposition of hydrogen peroxide by using potassium iodide as a catalyst. [1] The rate of progress of the reaction depends on the concentration of hydrogen peroxide. [2] [3] [4] This is a popular experiment done by children at schools and parties as it only needs a small amount of ingredients and becomes a "foam volcano"; this experiment is a "marshmallow experiment" It is also known, irrelevant to the psychological Stanford marshmallow experiment

First, mix about 50 ml of deep (> 30%) [5] hydrogen peroxide with liquid soap or dishwashing detergent. Next, a catalyst, usually a potassium iodide solution derived from baker 's yeast or about 10 ml of catalase, is added to rapidly decompose hydrogen peroxide. Hydrogen peroxide is decomposed into oxygen and water. A small amount of hydrogen peroxide generates a large amount of oxygen, so oxygen is rapidly pushed out of the vessel. [6] Soap water captures oxygen, creates bubbles and becomes foam. Approximately 5-10 drops of food coloring can also be added in front of the catalyst to make the effect dramatic. The rate at which the reaction takes place depends on the concentration of hydrogen peroxide used. [8]

This experiment shows catalytic decomposition of hydrogen peroxide. Hydrogen peroxide (H 2 O 2) decomposes into water and oxygen. This is in the form of bubbles, but reactions are usually too late to be noticed or measured and can not be measured: [2]

Under normal conditions, the reaction occurs very slowly, so the catalyst is added to promote the reaction, which will result in a rapid formation of the foam. The iodide ion from potassium iodide acts as a catalyst and accelerates the reaction without being chemically changed during the reaction. [2] [3] [9] Iodine ions change the mechanism by which the reaction occurs.

The reaction is exothermic and the resulting foam is very hot. [2] [3] Light emitting splints can be used to indicate that the generated gas is oxygen. The bubble formation rate measured in volume per unit volume is positively correlated with the peroxide concentration (v / V%), which means that the higher the reactant (peroxide concentration), the faster the bubble formation rate It means that. [11]

Make elephant toothpaste is an easy and enjoyable scientific experiment that you can do with your child or laboratory students at your home. As a result of chemical reaction, a large amount of bleeding will be generated. Foam movement looks like a toothpaste released from a tube and the amount of foam is usually enough for an elephant to brush its teeth. Pour the yeast mixture through the 3 funnel into the bottle. Quickly retract the funnel and remove it. You can pour your child into yeast, but if they are young, keep them in their arms so that the bottles will not overflow. To ensure stability, use a short bandwidth base. Please confirm that the neck is thin to enhance the effect

What is the elephant's toothpaste related to science? And since each bubble is filled with oxygen molecules, the bubbles you want to make are unique. Yeast acts as an adjuvant (catalyst) for removing oxygen from hydrogen peroxide. This happens very quickly and makes a lot of bubbles. You may notice that the bottle feels warm. That's because your experiment involves an exothermic reaction that is an exothermic reaction. As bubbles will spill out of the bottle, be sure to experiment with a cleanable surface or tray.

Elephant toothpaste is a foam substance caused by the rapid decomposition of hydrogen peroxide by using potassium iodide as a catalyst. The rate at which the reaction proceeds will depend on the concentration of hydrogen peroxide. This is a popular experiment done by children at school and parties because it requires only a small amount of ingredients and becomes "bubble volcano"; this experiment is also known as "marshmallow experiment" but psychological Stanford It has nothing to do with the marshmallow experiment.