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Nuclear Chemistry: Crash Course Chemistry #38

10691 ratings | 1265853 views
You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything we're doing. Also, if you can afford to pay a little every month, it really helps us to continue producing great content. In this episode, Hank welcomes you to the new age, to the new age, welcome to the new age. Here he'll talk about transmutation among elements, isotopes, calculating half-life, radioactive decay, and spontaneous fission. SUBBABLE MESSAGE: "To Crash Course From Shawn, Mike, Sophia, and Jake" "Thank you for using humor while educating and inspiring." -- Table of Contents Radioactivity Transmutation Among Elements and Isotopes Calculating Half-Life Radioactive Decay Spontaneous Fission -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support CrashCourse on Subbable: http://subbable.com/crashcourse
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Text Comments (1071)
Imagination (1 hour ago)
just came to know how famous Hank and John Green are, also realized that my 2 favorite books are written by this man [John Green], I thought that the writer of the books was some other John Green, Completely Mind Blown PS- I am stupid ;p
Aaron Campise (16 days ago)
Banana’s are radioactive! They have a very high half life but potassium is radioactive. There’s even stories of pregnant women who eat lots of them being detained under suspicion they may be caring a dirty bomb. Lol
TheLittleHusky (18 days ago)
Where did you get that shirt?
WinterChester (21 days ago)
math
Garry Lowery (24 days ago)
hi
C Sodhi (1 month ago)
Xenon isn't element 91!
Deepikatarun Patni (1 month ago)
Blah Blah
The LOL Minecrafter (1 month ago)
4:26 You know it's the end of the world if even Pepto-Bismol is having gastrointestinal distress.
PMLV Via (2 months ago)
his shirt tho lmao
Anne Mosfet (2 months ago)
Californian
bdjs100 (2 months ago)
irritating way of lecture
justin hyland (2 months ago)
No neutron radiation? You left neutrons out of the atomic history course too...
Allen White (3 months ago)
Hulk draws on ambient sources of gamma radiation in order to gain mass
ronette fainsan (3 months ago)
Last hope before my chemistry test tomorrow lol...
Brandon Fisher (3 months ago)
You've gotten something wrong in this video: gamma rays during radioactive decay come from the *nucleus* not the electrons :)
Therese Kayle (4 months ago)
pls talk slower plssssssssssssssssss
Kevin Moore (4 months ago)
Great explanation of radiation. Thumbs up, and added to favorites.
Jason Patterson (4 months ago)
Gamma radiation is released directly from the nucleus, not from excited electrons. It's called ionizing radiation for a reason - a gamma ray is powerful enough to knock any electron out of the atom entirely.
Alex Rator (4 months ago)
Comments
Ali Alsaidy (4 months ago)
He babbles on too much and goes off tangents about pop culture references excessively
Tyler Keller (5 months ago)
I'd love to know how many Jr, Sr high & city college teachers/instructors have incorporated these videos into their lessons. Not only are these fun to watch, but they're easily digestible. Those two factors combined with them simply being published on YouTube, I would think Millennials would relate to these easier. As well as, understand them as their production is fantastic and explanations are top notch.
Ace Nelson (5 months ago)
I still have no idea whats going on.
i420x Gaming (5 months ago)
Isn't trasmuted gold radioactive/unstable aswell as not making enough to suffice
lefrif houssam (5 months ago)
Is half life half the time it takes for an atom to reach stability via radioactive decay?
eBenkyou (5 months ago)
This is cool and all but does anyone know any play list of videos that teach about chemistry, science and other cool stuff at a slower pace, with no non stop cut scenes and minimal jokes. This is just way too fast and rushed.
VISHU (5 months ago)
do crash course on thermodynamics, wave in string, simple harmonic motion, modern physic...thz
Madara Uchiha (5 months ago)
My Susano'o is radioactive. Guess that explains why no-one was able to match me except Hashirama.
Melt Down (5 months ago)
Lol he sounds funny at 0.5x speed
Meghna Kashup Rajput (6 months ago)
Sir plz speak bit slow
Larina Pelletier (6 months ago)
The video was engaging, being concise when necessary, but also remembered to refresh background information to clarify explanations. The video was scientifically accurate, and the visuals provided helped me understand the content better than before. The video was worth my time, providing clear explanations of nuclear decay, and just enough background information. I would recommend this video to others for being so clear in an appropriate amount of time.
So does an isotope release protons if it has too little neutrons? Like iodine-125?
MelOlivo (6 months ago)
0:09 WHOA-OH OH I’M, WHOA-OH OH I’M, RADIOACTIVE, RADIOACTIVE
INK FOX (6 months ago)
After reading the comments, I am not longer ashamed to have put the video at 0.75 speed 😂
Drew Jones (7 months ago)
I already knew all of this and I am 14.
Alex Wu (7 months ago)
7:43 CC "[nickel]-60"
Alex Wu (7 months ago)
1:59 CC "[its] nature"
Alex Wu (7 months ago)
1:22 CC and dialogue: "we've been talking about [it] for most of this course"
Alex Wu (7 months ago)
For those of you who are just looking at this one video, there is a second part to this titled "Nuclear Chemistry Part 2: Fusion and Fission - Crash Course Chemistry #39"
sandeep kumar abbugari (7 months ago)
Many people likes to learn things online. Please make sure there are no mistakes in it. In this one I observed two mistakes 1) Thorium when emits electron decays into Palladium. 2) Gamma rays are emitted not due to electron transition but when a nucleus gives out it's excited energy.
ddam1320 (8 months ago)
"Nothing harmful, just low levels of gamma radiation." ... "That can be harmful."
For Those Who Dont Know The First Song Actually Was Radioactive-Imagine Dragons
Amogh Chavan (8 months ago)
Do you also help in organic? ?
chloe is cool (8 months ago)
nice editing dude! loved the video, learnt a lot, taught me more than my old teacher, Thanks!
Ayala Asher (9 months ago)
Thank you for this it was very helpful
Shailender Kalia (9 months ago)
k
Shailender Kalia (9 months ago)
k
Shailender Kalia (9 months ago)
k
Shailender Kalia (9 months ago)
k
Feline Fellow 1 (9 months ago)
That song is Radioactive
Rosellen Provost (9 months ago)
CAKE.
CapnAce79 (9 months ago)
I was lost at .04
Gerardo Larios (9 months ago)
when did Evan start teaching chemistry
Moises Miranda (9 months ago)
This looks like friend my Evan
Alexis Bucciali (10 months ago)
I wish you would show the actual process of how the math works with half-life​. But thank you for your help. I will watch this over and over again till my exam tomorrow.
Evan MeyerBrand (10 months ago)
Element 91is Proactium
Bayley Teboekhorst (10 months ago)
NO ONE CARES
Daniel Rominov (10 months ago)
i love this channel, it will help me become the next einstein/newton and make scientific discoveries.
L3xX 1 (10 months ago)
I think I just saw Minecraft.
c.sagan (11 months ago)
Didn't go in the interesting details
Gaurav Tiwari (11 months ago)
Q. Define Hulk. Ans. A giant green rage monster that doesn't obeys law of conservation of mass. But, energy and mass are inter-convertible.
How in the world can anyone know that the half-life of bismuth is longer than the age of the universe? What kind of experiments does it need?
vedant bahal (11 months ago)
Love Hank's t-shirt here
H.A.F.15 (11 months ago)
That really helped me in my chemistry exam
Question: what can be used to keep radiation or radiated debris from being absorbed by humans or plant life? For example if a nuclear bomb was to hit a city, in order to keep the radiation from spreading or contaminating other living or none living things, what can be used?
Xer Xes Laitan (1 year ago)
Does CrashCourse have its own app?
Taha Silat (1 year ago)
Recommendations for watching crash course: 1. Take notes when you watch the video 2. Pause the video and replay if you don't understand something 3. Set the speed to 0.75. This makes it much easier to understand
Szil covers (1 year ago)
Hank Green as Herogreen in Minecraft.
Megan Rux (1 year ago)
Wait we learned this in physics
Maya KC (1 year ago)
cool
u r killing ur watch time by speaking too fast
L. V. (1 year ago)
Great information, but this guy talk too fast!
Jeff Harper (1 year ago)
Once his mouth opened i turned off. You could not pick a better public speaker?
Jessica Burns (1 year ago)
What's With The Minecraft Reference
Ammar Mir (1 year ago)
0.75 speed and you can understand what he is saying
Arvid Johansson (1 year ago)
There's a slight error in the clip. The nucleus produced by Thorium-234 undergoing betadecay isn't Xenon-234, it is Protaktinium-234.
Professor Voodoo (1 year ago)
I have heard of half life- it never happens three times
ice cream (1 year ago)
Minecraft!!!
The Cactus (1 year ago)
Nibba what u sayin
Pegas Terrorus (1 year ago)
PLEASE WATCH HIS VIDEOS
Peru Vazhuthy (1 year ago)
can you talk slowly . give a pass and give really some pass while talking . not every one knows chemistry . make your examples understandable by talking little bit slowly. I watched this video half an hour to get it. Lots of information. but it is really fast !!!
Benjamin Harrison (1 year ago)
This guy reminds me of Hush's older brother...
shrvan sudhakar (1 year ago)
cool shirt
Guess Who Am I (1 year ago)
Minecraft?
Torpedo Tekkers (1 year ago)
Yeah my name is Coolguy1234 add me and Ill add you to my realm only 19.99 per week
Derpsii (1 year ago)
What? I see you on Squishy's.vids, and you're on Crash Course too?
DoctorAspect (1 year ago)
*FIRESTORM*
Lordofultramar (1 year ago)
Shouldn't the gamma decay be produced from excited nucleus energy levels, not election energy levels?
Chipo kimberly Bubala (1 year ago)
If your brain processes slowly then you won't understand hank... Sorry! 😝😝
Asrul Hakim (1 year ago)
In America radioactive makes superhero In Japan radioactive makes monster Why??
klwx20816 (1 year ago)
this teacher talks way too fast.
Chicken Fingers (11 months ago)
you think too slow
SCP -049 (1 year ago)
Gordan is waiting for 1 more half life
sebtech stuff (1 year ago)
i luv this show like if u agree
Smokin'Boots (1 year ago)
I wonder how many Year 10s are here cramming for exams
Prayag Vaniya (1 year ago)
Please speak slow
Chicken Fingers (9 months ago)
Prayag Vaniya please think faster
Fujiwara 藤原 (1 year ago)
3:40 Now you've heard of half life! Yeah half life 1 was great! Half life 2 was also amazing but....wait....HALF LIFE 3 CONFIRMED?!
Fujiwara 藤原 (1 year ago)
What makes you S.P.E.C.I.A.L.
Madhav Malhotra (1 year ago)
Why do we measure half-lives instead of whole-lives?
Arush Ramteke (1 year ago)
when hank is an imagine dragons fan!!!!!
Satwika Katragadda (1 year ago)
Thanks man.....really helped.
Valery Garcia (1 year ago)
Only reason I'm listening to this is because our teacher is making us. Supposed to help but I don't understand a word your saying since you talk hella fast. djfaksdfjasd;k fjasd;fklja;fa slow tf down.
Sera Nicole (1 year ago)
wouldn't it be protactinium-91, not xenon-91?
Marian Bakarr (1 year ago)
I just realized that he is not John Green

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