Elephant Toothpaste Demonstration

The video tutorial demonstrates the elephant toothpaste experiment, detailing the materials needed, the chemical reaction involved, and the role of yeast as a catalyst. It emphasizes safety precautions, such as wearing goggles, and provides a step-by-step guide to conducting the experiment. The tutorial also explores variations using different strengths of hydrogen peroxide, highlighting how the reaction speed increases with stronger concentrations. Observations are made on how the reaction can resemble either an ice cream cone or toothpaste, depending on the setup.

What is the primary purpose of using food coloring in the elephant toothpaste experiment?

• To speed up the reaction

• To make the foam colorful

• To stabilize the yeast

• To neutralize the peroxide

In the elephant toothpaste experiment, what role does yeast play?

• It neutralizes the peroxide

• It is used to color the foam

• It serves as a catalyst

• It acts as a reactant

Why is 3% hydrogen peroxide used in the initial demonstration?

• It is the most reactive

• It is the cheapest option

• It is safe and easily available

• It produces the most foam

What safety equipment is essential for the elephant toothpaste experiment?

• Face mask

• Splash goggles

• Apron

• Gloves

What happens when you increase the concentration of hydrogen peroxide in the experiment?

• The yeast dissolves

• The reaction slows down

• The reaction speeds up

• The foam changes color

How can you make the reaction look like toothpaste being squeezed out of a bottle?

• Use more yeast

• Use cold water

• Tilt the reaction vessel

• Add more detergent

What is a key observation about the reaction with 12% hydrogen peroxide?

• It is endothermic

• It takes longer to start

• It produces less foam

• It gives off heat