Chemical / Physical Change Experiments Elephant Toothpaste (Chemical Change TEACHER ASSISTED) – Materials: safety glasses plastic bottle (bottles with small openings work best) funnel that fits inside the plastic bottle top aluminum cake pan to contain the mess food coloring squirt of dawn dish soap hydrogen peroxide - the stronger the peroxide, the better the result **stronger peroxide can be found at a beauty supply store in the hair dye section 1 teaspoon yeast dissolved in approximately 2 tablespoons warm, not boiling, water (if the water is too warm, the yeast will not react) Experiment Procedures: Put on safety glasses. Stand the bottle up in the center of the cake pan. Put the funnel in the opening. Add 3-4 drops of food coloring to the peroxide and pour the peroxide through the funnel into the bottle. Add a squirt of Dawn detergent to the peroxide in the bottle. Pour the yeast mixture into the bottle and quickly remove the funnel. (The reaction should be immediate.) The students can the bottle and the substance created to feel any changes that take place.
Chemical / Physical Change Experiments Elephant Toothpaste (Chemical Change – TEACHER ASSISTED) Materials: safety glasses plastic bottle (bottles with small openings work best) funnel that fits inside the plastic bottle top aluminum cake pan to contain the mess food coloring squirt of dawn dish soap hydrogen peroxide - the stronger the peroxide, the better the result **stronger peroxide can be found at a beauty supply store in the hair dye section 1 teaspoon yeast dissolved in approximately 2 tablespoons warm, not boiling, water (if the water is too warm, the yeast will not react) Experiment Procedures: Put on safety glasses. Stand the bottle up in the center of the cake pan. Put the funnel in the opening. Add 3-4 drops of food coloring to the peroxide and pour the peroxide through the funnel into the bottle. Add a squirt of Dawn detergent to the peroxide in the bottle. Pour the yeast mixture into the bottle and quickly remove the funnel. (The reaction should be immediate.) The students can the bottle and the substance created to feel any changes that take place.
ChemicalandPhysicalChangeExperiments.docx