Tuesday, March 20, 2012

Red Bull and Milk Reaction



Did you know if you mix milk with Red Bull, the milk will curdle? Pour milk (whole milk works best) into a glass. Then, pour Red Bull on top. Let the solution sit for five minutes. The acid in the Red Bull causes the protein (casein) in the milk to separate. This is a great experiment to do with a states of matter unit. When the milk curdles, a chemical reaction takes place, resulting in a precipitate. 

Below, Mr. Mishler's second grade class tested Red Bull on five types of milk.






19 comments:

  1. Maybe it'll also be a lesson on why not to drink Red Bull!

    ReplyDelete
    Replies
    1. or a lesson in why to not drink milk o.0

      Delete
  2. How much milk and how much red bull is being used?

    ReplyDelete
  3. Hello! I am a ninth grade physical science (physics/chemistry) teacher. I see that there is an error in your content on this page. Phase changes and states of matter are physical properties/changes. Causing milk to curdle is a chemical reaction making a precipitate. They are not the same thing. While it is a common misconception, please correct that on this site. I love all of the ideas on your site, but I had to say something about the content here.

    ReplyDelete
  4. Love this. Cool Visual with the Red Bull Can; Vinegar will do the same thing (typically about 5% Acetic Acid) at a much lower price and you'll have lots left over for other experiments.

    ReplyDelete
  5. I will be using this idea with my kids this week!!!!

    ReplyDelete
  6. Interesting to think about with ice cream floats..... Do you have the whole procedure for this experiment written somewhere?

    ReplyDelete
  7. Doing this with my 5th graders tomorrow! Thx! Does anyone have a lab sheet to go with it?

    ReplyDelete
  8. Doing this tomorrow with my 5th graders! Thanks! Does anyone have a lab sheet to go with it?

    ReplyDelete
  9. The experiment can continue further ......acid is added to milk anyway a process in cheese making. It was a means store milk a perishable due bacteria- long before processes refrigeration, pasteurization or homogenization (all stabilized raw milks life beyond 1-3 days pending holding temperature) Increase shelf life curdle enter fats such as cream, butter & buttermilk enabled 3-5 days final mold cultures such as penicillin (mold that inhibits bacteria) it enabled shelf stability milk proteins weeks to several years. This depends upon the mold cultures now there are bacteria cultures that are safe to consume and extend milk use such as souring bacteria: yogurt, sour cream and creme fraiche - requirement sour bacteria requires fat solids for shelf stability. Mold is the most durable in milk food stability and prized especially aged cheddar producers due higher values some the oldest sold & consumed 28-40 years old.

    You can continue this science experiment towards the direction application food supply storage, innovation food science to prevent starvation and human health introduce works Dr. Louis Pasture & Dr. Alexander Fleming.

    May I suggest make it better experiment if kids can see the purpose application via eating it there are safe-tested recipes make homemade kitchen: cheese, butter & yogurt. Yes there are easy to follow kits for all three under $30 butter is quick under 20 minutes the others longer due passive wait times so best done end day then over-night to mature ready the next lesson day. Some kits come graded as beginner & age level ----I learned via great aunt's farm over 37 years ago committed to memory as determine freshness & fresh tastes best! :)

    ReplyDelete
  10. Wow crazy experiment... Chemistry and pharmaceuticals are just most amazing things in the world! <3 it

    ReplyDelete
  11. This is an awesome experiment. Great Job!!!

    ReplyDelete
  12. Hey, I get it. In second grade, which I have taught, it is mostly about getting them to see the experiment, why we do experiments, the job of a scientist, and how to manage your behavior during an experiment. It's an awesome experience for the kids and it brings something a little more readily available to them rather than the vinegar as suggested above. It also has to be safe for the kids to use. Great job. Can't wait to use it. Thanks

    ReplyDelete
  13. Save some dough--buy a Red Bull, drink it, and put vinegar in the can to use for your experiment/demo. Any acid will react with milk this way, including the Acetic Acid in Vinegar--and it'll happen faster!

    ReplyDelete