Care should be taken to avoid ingestion because the project includes detergent, which can cause vomiting. Have you ever heard about a viral experiment called Elephant Toothpaste?
The classic demo uses 30% hydrogen peroxide, which is not safe for kids, but there is a safe version of this demonstration that is still very cool. If no, then great – you might find it interesting to learn how to do it. on Introduction, Looks like something from, "Demolition Man" with the car seen. Amaze a Science Class With Elephant Toothpaste: This experiment shows the decomposition of hydrogen peroxide catalyzed by potassium iodide.
The original demonstration results from decomposition of hydrogen peroxide catalyzed by potassium iodide. The ones when heat is produced.
H 2 O 2 looks like ordinary water (H 2 O), but the addition of that extra oxygen atom turns the molecule into an extremely powerful oxidizer. However, the reaction just makes the solution warmer, not hot enough to cause burns. The elephant toothpaste demo is one of the most popular chemistry demonstrations, in which a steaming tube of foam keeps erupting from its container, resembling a smooshed tube of elephant-sized toothpaste. Cap and shake until all the potassium iodide is dissolved (This should now be a saturated solution of KI made with 15 grams of KI and water.) 2. When you are ready to do the demo, pour the yeast mixture into the bottle. Do not stand over the graduated cylinder because steam and oxygen are produced quickly. 4. Probably you made it, therefore you can try to do it differently with different color food dyes.
Developer is not labeled by concentration 20v is 6% 30v is 9.9% and 40 v is 12%. 7. Rapidly expanding foam contains oxygen, hence you’d better work in distance from flammable things (wood, LPG kitchens, papers, curtains and so on), be ready to fade out potential fire, use glasses at all time, keep your hair tied up, do not breath the gases.
Dr. Helmenstine holds a Ph.D. in biomedical sciences and is a science writer, educator, and consultant. on Introduction. it was yummy in my tummy. She has taught science courses at the high school, college, and graduate levels. well then. Swirl to mix Please leave your comments below. Hydrogen peroxide, particularly of this grade is controlled as it is a precursor to a number of explosives.
The classic 'elephant's toothpaste' chemistry demo gets extreme in a video found on Twitter. This fantastic effect you can get by combining just four ingredients: water, hydrogen peroxide, potassium permanganate, and dish soap. Amazon's Choice for elephant toothpaste Karter Scientific Glass Flask 5 Piece Set, Narrow Mouth Erlenmeyer, Borosilicate 3.3 Glass - 50ml, 150ml, 250ml, 500ml, 1L, 213B2 4.7 out of 5 stars 699 Due to the fact that hydrogen peroxide in high concentration can cause chemical and physical burns please keep precautions. disposable gloves Tilt the graduated cylinder and drip red and/or blue food coloring down the sides of the graduated cylinder to make your toothpaste striped
Yeast needs warm water to reproduce, so the reaction won't work as well if you use cold water (no reaction) or very hot water (which kills the yeast). Wear safety goggles. Above all, to make the elephant toothpaste grow, we have to do one more thing – add hydrogen peroxide in one shot. Catalytic Decomposition of Hydrogen Peroxide by Potassium Iodide Brief Description: Two solutions are mixed resulting in an eruption of foam resembling a huge stream of toothpaste.
Give the yeast about five minutes to activate before proceeding to the next step. The iodide ion catalyzes the decomposition of hydrogen peroxide, generating oxygen gas which causes the soap to … 10 years ago
learn somethin new everyday dontchaaa? Maybe you love green color or maybe the red one – choose whatever your imagination tells you and have fun!
I already have a bottle of 100% potassium iodide.
... easy-to-access ingredients: hydrogen peroxide, dish soap, potassium iodide … Iodised salt is TABLE SALT mixed with a TINY amount of inorganic iodine salt which could be sodium or potassium iodate OR sodium or potassium iodide. If you would like your foam to get out from the container use the short one.
This experiment shows the catalyzed decomposition of hydrogen peroxide. It goes like this: Hydrogen peroxide (H2O2) is a reactive molecule that readily decomposes into water (H2O) and oxygen: In this demonstration, yeast catalyzes the decomposition so it proceeds much more rapidly than normal. I am a high school senior at a STEM school who works with a club doing experiments for younger students. Add about 40 ml of Dawn detergent to the hydrogen peroxide.