Elephant Toothpaste

When hydrogen peroxide decomposes (breaks down), it gives off oxygen gas and water. As it is an exothermic reaction it also gives off heat. The reaction is:

2 H2O2 → 2 H2O + O2

Under ordinary circumstances, it decomposes very slowly, but potassium iodide can act as a catalyst — making the reaction tremendously fast. If there is some liquid soap mixed in with the hydrogen peroxide, steamy foam will gush out of the container. And the foam looks kind of like big toothpaste, thus the reaction is sometimes called the ‘elephant toothpaste’ reaction. Check it out:

Advertisements

Tags: , ,

7 Responses to “Elephant Toothpaste”

  1. GiacJr Says:

    I watched that three times, and each time my mouth dropped at how awesome it is!!

  2. Maddy White Says:

    I convinced our science teacher to let us do this on the last day of school!
    However….uh, I didn’t tell her what it does….only how to do it! She will be in for a shock! 🙂

  3. TARRYN HURST Says:

    we should so do an experement like this in class. that would be the best class ever!!!!!!!!

  4. james Says:

    hey mr barlow we definitely need to do this in bio…. even if it relates to nothing!!! 🙂

    • Mr. Barlow Says:

      Well it relates to elephants brushing their teeth of course.

      And as elephants are living animals it must be biology related. Not sure we’ll do it in class though!

  5. Oxandrolone USA Says:

    […] US Order Oxandrolone in US Order Oxandrolone in US Order Oxandrolone in US Order Oxandrolone in US Order Oxandrolone in US Order Oxandrolone in US Order Oxandrolone in US Order Oxandrolone in US Order Oxandrolone in US […]

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

w

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.


%d bloggers like this: