迈达斯的魔术(1)

Hi, I'm Jessica and today I'm gonna talk about a reaction I like to call

Midas' magic and before I get started, let's watch the reaction in action

with the help of Dr. Bassam Shakhashiri and here he is

he's actually the president of the American Chemical Society and his motto is science is fun

Here he is at MIT and let's see what he has to show us Watch this. I take this clear and colorless liquid

and I put some of it into beaker, about 100 milliliters How do I know it's about 100 milliliters?

I'm reading the markers here on the beaker and I take about 100 milliliters of a bit different clear and colorless liquid

but you don't know it's different, they look the same and look at this look, look what's gonna happen now?

Isn't one of the most fascinating observations you make? You take 2 clear colorless liquid, you mix them together

and you get a yellow substance that is insoluble in water This is lead iodide