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Chemistry: 4.7 Atomic Emission Spectra and Flame Tests 395 Views
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Description:
Today we're playing with fire. Wait, we're not supposed to say playing...having fun with fire? Today's lesson is on the colors that can be emitted when certain elements burn. Don't play with fire, Shmoopers.
Transcript
- 00:04
hydrogen is on a date with iron and not to jinx it but it's going [Hydrogen and iron on a date]
- 00:08
really really well yeah giggity first they did dinner in a movie and now
- 00:13
they're back at hydrogen's place where he's decided to show off his extensive [Hydrogen showing iron his figurine collection]
- 00:17
Star Wars figurine collection hopefully this won't be a deal breaker though they
- 00:24
move things through the living room and it's just about to start getting hot and
Full Transcript
- 00:27
heavy when the unthinkable happens hydrogen lets off a light emission oh [Hydrogen and Iron sitting on couch and light emission appears]
- 00:32
how embarrassing well why did it happen well it has nothing to do with the fact
- 00:36
that he wolf down three carne asada burritos a few hours ago and we can [Hydrogen eating burritos]
- 00:41
start right there as poor as the timing might have been it's perfectly natural
- 00:44
and common for an element to emit light in fact it's one of the ways we're able
- 00:49
to identify elements in certain situation since each element has a
- 00:53
distinct and unique emission spectrum this is the emission spectrum for [Elements appear on periodic table]
- 00:58
hydrogen mostly red a little bit of blue and purple in there yeah but what causes
- 01:03
this emission of light is a drop in energy whenever an electron drops from
- 01:08
one orbble to a lower one consequently decreasing in energy it emits a [Electron drops an orbital]
- 01:13
particular type of photon which we see is a different type of color in
- 01:17
hydrogen's case he just happened to release a photon while on the crouton
- 01:22
alright so things are awkward until to make hydrogen feel better about the [Iron and hydrogen sitting on couch]
- 01:26
situation iron emits the light of its own [Iron lets of light emission]
- 01:29
wowsers it looks like a bowl of fruit loops up in there
- 01:32
well you'd think that hydrogen's mind would be put at ease after seeing such
- 01:36
an overtly colorful display but it turns out he's actually a little turned off by [Hydrogen moves across the couch away from iron]
- 01:41
the whole thing no one said it was pretty in the deep
- 01:45
end of the dating pool
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