Solution A
In 1-Liter of distilled water add 1.2 grams of sodium metabisulfite. Carefully add 4 grams of concentrated sulfuric acid and 10 mL of ethanol.
Solution B
Add 4.3 grams of potassium iodate to 1000 mL of distilled water.
Solution C
Boil water and measure out 50 mL. Add 2 grams of soluble starch and allow to cool.
Presentation Time
In a 250 mL beaker, combine 50 mL of Solution A with 50 mL of distilled water. Now, add 10 mL of Solution C to the mixture.
In a 100 mL beaker, combine 50 mL of Solution B and 50 mL of distilled water.
Get ready to start your stopwatches! Pour the solution in the second beaker into the first beaker. Keep pouring the solutions back and forth into the
beakers for about 8-10 seconds. Watch in amazement as the combined solutions turn an inky black color instantly! Wait for the oohs, ahhs, and applause
from your captivated audience. |