Saturday, May 18, 2013

Toothpaste



8 comments:

  1. The chemical Reaction created a dense foam that expanded until it was too much for the space of the graduated cylinder. Within the reaction, the foam heated up as it expanded. This foam was very dense and held it in place almost like toothpaste. It was not quick but it had a lot of pressure.
    TB

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  2. This is physics because the elephant toothpaste is rising upward out of the graduated cylinder. The elephant toothpaste is rising out of the graduated cylinder because it is expanding causing it to grow. It is rising up because it is growing and has no where else to go besides upward. That is physics because the chemical energy is growing and has no where else to expand besides upward.

    PC

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  3. When the Hydrogen Peroxide/Dish soap Mixture comes into contact with the yeast it creates an exothermic reaction by releasing the oxygen in the Hydrogen Peroxide. If we held a flame over the newly created foam it would light because of the oxygen.

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  4. When ingredients such as yeast, hydrogen-peroxide, and dish soap are combined there is a reaction of foam traveling upwards and heating up.The graduated cylinder releases the upwards because that is the only direction which it can travel in. The foam is releasing oxygen in this reaction which makes it highly flammable. The reaction was not as instantaneous as the diet coke experiment but there was a greater reaction between the substances.
    Reed

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  5. The chemical reaction from the ingredients that were yeast, hydrogen-peroxide, and dish soap they all come together creating the chemicals to shoot upward in the tube. I noted that when it reached the top the force of gravity acted on creating the foam to go a little higher than the tubes top. Also the chemical energy is so great that it made the foam come up and out.

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  6. This chemical reaction involves dish soap and hydrogen peroxide, mixed with yeast. The substance began to heat up due to the reaction, and foam began to built. Much like with the coke and mentos, the foam had nowhere to go but up as it began to build, and it rose to the top in a warm, moist pillar. As soon as it reached the top, the force of gravity worked against it, making it sink down the test tube, caking it in warm, blue foam.
    -Charlie

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  7. This reaction is very similar to that of the mentos and coke. Yeast and hydrogen Peroxcide create a chemical reaction when combined and have a latent potential chemical energy. The chemical reaction causes a rapid expansion as well as a release in heat, that in the small graduated cylinder causes the liquid to rush upwards and overflow, seemling like toothpast.

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  8. the chemical reaction between the yeast, hydrogen-peroxide, and dish soap create a foamy substance that expands heats up and pushes is up out of the graduated cylinder because the force only has one way to go and that’s up
    QF

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