Caracterizadora

Sometimes it's hard to tell SCIENCE from MAGIC - and this little demonstration is a great example of that.In this experiment you will watch an almost clear liquid suddenly turn dark blue in aflash. It takes a bit of preparation, and probably a trip to the pharmacy for materials, but we think it's worth it.

IMPORTANT SAFETY INFORMATION: This experiment should be done only with the help of anadult. Iodine will stain just about anything it touches and it can be hazardous. Hydrogen peroxide can cause eye and skin irritation - safety goggles are needed Throughout the experiment. Be sure yourhelpful adult reads the caution labels on each container.

* 3 clear plastic cups or larger 4 Ounces
* A 1000 mg Vitamin C tablet from the pharmacy (you can also use two 500mg)
* Tinctureof Iodine (2%) also from the pharmacy
* Hydrogen peroxide (3%) yep, also from the pharmacy
* Liquid laundry starch (see below for alternatives)
* Safety goggles
* Measuring Spoons* Measuring cup
* An adult helper

1. Put on safety goggles and thoses mash the 1000 mg Vitamin C tablet by Placing it into a plastic bag and crushing it with a rolling pin or the back of alarge spoon. Get it into a fine powder of as much as possible. Then put all the powder in the first cup and add 2 Ounces (60 ml) of warm water. Stir for at least 30 seconds. (The water may be a littlecloudy) Let's call this "LIQUID"
2. Now put 1 teaspoon (5 ml) of your LIQUID A into a new cup and add to it: 2 oz (60 ml) of warm water and 1 teaspoon (5 ml) of the Iodine. Notice the brown Iodineturned clear! Let's call this "LIQUID B." By the way, you're done with LIQUID A - you can put it aside.
3. In the last cup, mix 2 ounces of warm water, 1 tablespoon (15 ml) of the hydrogenperoxide and 1/2 teaspoon (2.5 ml) of the liquid starch. This is, you guessed it, "LIQUID C"
4. Okay, that was a lot of preparation, on to the fun part. Gather the friends and family and pour all of...