What is the dependent variable in the elephant toothpaste experiment?
The dependent variable is the foam produced in the reaction. The controlled variable are the amounts of yeast, hydrogen peroxide, dish washing liquid, water, and food coloring that is used.
What is a testable question for elephant toothpaste?
To make it a true experiment, you can try to answer these questions: Does the amount of yeast change the amount of foam produced? Will the experiment work as well if you add the dry yeast without mixing it with water? Does the size of the bottle affect the amount of foam produced?
What is needed for elephant toothpaste experiment?
What You’ll Need:
- A clean 16-oz plastic soda bottle.
- 1/2 cup 20-volume hydrogen peroxide liquid (20-volume is a 6% solution; you can get this from a beauty supply store or hair salon)
- 1 Tablespoon (one packet) of dry yeast.
- 3 Tablespoons of warm water.
- Liquid dishwashing soap.
- Food coloring.
- Small cup.
- Safety goggles.
How do you describe elephant toothpaste?
Elephant’s toothpaste is a foamy substance caused by the rapid decomposition of hydrogen peroxide using potassium iodide or yeast and warm water as a catalyst. How rapidly the reaction proceeds will depend on the concentration of hydrogen peroxide.
What is the purpose of elephant toothpaste experiment?
Elephant’s toothpaste is a foamy substance that’s created when you combine water, hydrogen peroxide, yeast, and dish soap. It is commonly used in classrooms to demonstrate an exothermic reaction. More recently, it’s been used at the 2019 Miss Virginia pageant and for gender reveals.
What chemical reaction occurs in elephant toothpaste?
The sodium iodide reacts with the hydrogen peroxide (H2O2) by removing an oxygen atom. This essentially produces water and oxygen gas (H2O + O2). The oxygen gas produced gets trapped in the soap which produces the big ball of foam. The reaction produces oxygen gas, water and iodine.
What causes elephant toothpaste to react?
3. How does this reaction occur? This reaction occurs when the yeast acts as a catalyst to separate the oxygen from the hydrogen peroxide. The foam is a result of oxygen-filled bubbles from the hydrogen peroxide being broke into water (H2O) and oxygen (O2).
What happens when elephant toothpaste reacts?
What is the chemistry of elephant toothpaste?
How does elephant toothpaste relate to chemistry?
What type of reaction is the elephant toothpaste demonstration?
Elephant Toothpaste Experiment Fast Facts Concepts Illustrated: This demonstration illustrates exothermic reactions, chemical changes, catalysis, and decomposition reactions.
What is the objective of the elephant toothpaste experiment?
– When chemicals mix, they can react – Changing the ingredients can change the reaction – Some chemical reactions can be dangerous – It’s important to take safety precautions when working with chemicals
What is the conclusion to elephant toothpaste?
The two main ingredients in elephant toothpaste (yeast and hydrogen peroxide) create a carbon dioxide gas, which creates large air bubbles that get trapped in soap, creating a frothy mixture that is fun to look at. Elephant toothpaste is also an example of an exothermic reaction, meaning that the chemical reaction produces heat.
What are the results of elephant toothpaste?
– a catalyst can make a reaction occur, and the reaction can be rapid and quite showy. – potassium iodide, manganese dioxide and potassium sulfate are catalysts for hydrogen peroxide – there’s a lot of oxygen hiding in hydrogen peroxide, enough to really make things move – when soap has lots of oxygen released into it, it turns into soapy foam
What are the procedures for making elephant toothpaste?
Measure 1/2 cup of hydrogen peroxide,and carefully pour it into the bottle.