How big is a mole? (Not the animal, the other one.) - Daniel Dulek
View full lesson here: http://ed.ted.com/lessons/daniel-dulek-how-big-is-a-mole-not-the-animal-the-other-one The word "mole" suggests a small, furry burrowing animal to many. But in this...
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OK, today we're going to talk about the mole.Now, I know what you're thinking: "I know what a mole is,it's a small furry creature that digs holes in the ground and destroys gardens."And some of you might be thinking that it's a growth on your aunt's face with hairs sticking out of it.Well, in this case, a mole is a concept that we use in chemistry to count molecules,atoms, just about anything extremely small.Have you ever wondered how many atoms there are in the universe?Or in your body? Or even in a grain of sand?Scientists have wanted to answer that question,but how do you count something as small as an atom?Well, in 1811, someone had an idea that if you had equal volumesof gases, at the same temperature and press...
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OK, today we're going to talk about the mole.Now, I know what you're thinking: "I know what a mole is,it's a small furry creature that digs holes in the ground and destroys gardens."And some of you might be thinking that it's a growth on your aunt's face with hairs sticking out of it.Well, in this case, a mole is a concept that we use in chemistry to count molecules,atoms, just about anything extremely small.Have you ever wondered how many atoms there are in the universe?Or in your body? Or even in a grain of sand?Scientists have wanted to answer that question,but how do you count something as small as an atom?Well, in 1811, someone had an idea that if you had equal volumesof gases, at the same temperature and press...
