Hank brings us the story of the electron and describes how reality is a kind of music, discussing electron shells and orbitals, electron configurations, ionization and electron affinities, and how all these things can be understood via the periodic table.

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Table of Contents
Snobby Scientists 00:43
Great Dane/Bohr Model 01:57
Electrons as Music 04:13
Electron Shells and Orbitals 04:44
Electron Configurations 05:54
Ionization and Electron Affinities 08:17
Periodic Table 10:18 Support CrashCourse on Subbable: http://subbable.com/crashcourse

Hank tells us the story of the complicated chemical dance that allows our skeletal muscles to contract and relax.

Crash Course Biology is now available on DVD! http://dft.ba/-8bCC

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Table of Contents
1) Cardiac, Smooth, & Skeletal Muscles 01:09
2) Muscle Anatomy 02:03
a) Muscle Fibers 03:07
b) Myofibrils 04:15:1
c) Sarcomeres 04:19:1
d) Myofilaments 04:37:2
3) Biolography 05:37:1
4) Sliding Filament Model 07:47

References for this episode can be found in the Google document here: http://dft.ba/-3syE

crash course, crashcourse, biology, muscular system, muscle, cellular respiration, energy, ATP, human body, chemistry, cardiac muscle, smooth muscle, skeletal muscle, contract, relax, tendon, anatomy, physiology, fascicle, fibers, protein, myofibril, sarcomere, myofilament, actin, myosin, sliding filament model, biolography, electron microscope, tropomyosin, troponin, sarcoplasmic reticulum, motor neuron Support CrashCourse on Subbable: http://subbable.com/crashcourse

All the magic that we know is in the transfer of electrons. Reduction (gaining electrons) and oxidation (the loss of electrons) combine to form Redox chemistry, which contains the majority of chemical reactions. As electrons jump from atom to atom, they carry energy with them, and that transfer of energy is what makes all life on earth possible.

**Special Thanks to Matt Young at the University of Montana (Geosciences Department, Environmental Biogeochemistry Lab) who helped with the chemical demonstrations.**

Oxidation 1:42
Reduction 1:03
Oxidation Numbers 3:29
Redox Reactions 5:59
Oxidation Reactions 6:28
Balancing Oxidation Reactions 7:18

Also thank you to the following chemistry teachers for assistance:
James Sarbinoff
Rachel Wentz
Edi González
Lucas Moore
Chris Conley
Addie Clark
Julia Rosinski

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This week, we're starting our discussion of Mythical Creatures with the WORST creatures. Monsters. What makes a monster monstrous though? Mike Rugnetta will guide you through the fine line between a magical creature and a monster. Spoiler alert: like 60% of the time, the difference is that monsters eat people. We'll talk about sea monsters, Sphinxes, and take an elongated look directly into the Canadian face of horror, the Wendigo.

Crash Course is made with Adobe Creative Cloud. Get a free trial here: http://www.adobe.com/creativecloud.html

Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse

Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever:

Mark Brouwer, Divonne Holmes à Court, Brian Thomas Gossett, Khaled El Shalakany, Indika Siriwardena, Robert Kunz, SR Foxley, Sam Ferguson, Yasenia Cruz, Daniel Baulig, Eric Koslow, Caleb Weeks, Tim Curwick, Jessica Wode, Cami Wilson, Eric Prestemon, Evren Türkmenoğlu, Alexander Tamas, Justin Zingsheim, D.A. Noe, Shawn Arnold, Tom Trval, mark austin, Ruth Perez, Malcolm Callis, Kathrin Janßen, Ken Penttinen, Advait Shinde, Cody Carpenter, Annamaria Herrera, Nathan Taylor, William McGraw, Bader AlGhamdi, Vaso, Melissa Briski, Joey Quek, Andrei Krishkevich, Rachel Bright, Alex S, Mayumi Maeda, Kathy & Tim Philip, Montather, Jirat, Eric Kitchen, Moritz Schmidt, Ian Dundore, Chris Peters, Sandra Aft, Jason A Saslow, Steve Marshall
--

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We love the internet! It's a wealth of information where we can learn about just about anything, but it's also kind of a pit of information that can be false or misleading. So, we're partnering with Mediawise and the Stanford History Education Group to make this series on Navigating Digital Information. Let's learn the facts about facts!

Special thanks to our partners from MediaWise who helped create this series:
The Poynter Institute
The Stanford History Education Group (sheg.stanford.edu)

Follow MediaWise and their fact-checking work across social:
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https://www.facebook.com/MediaWise/

MediaWise is supported by Google.

Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse

Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever:

Eric Prestemon, Sam Buck, Mark Brouwer, Naman Goel, Patrick Wiener II, Nathan Catchings, Efrain R. Pedroza, Brandon Westmoreland, dorsey, Indika Siriwardena, James Hughes, Kenneth F Penttinen, Trevin Beattie, Satya Ridhima Parvathaneni, Erika & Alexa Saur, Glenn Elliott, Justin Zingsheim, Jessica Wode, Kathrin Benoit, Tom Trval, Jason Saslow, Nathan Taylor, Brian Thomas Gossett, Khaled El Shalakany, SR Foxley, Yasenia Cruz, Eric Koslow, Caleb Weeks, Tim Curwick, D.A. Noe, Shawn Arnold, Malcolm Callis, Advait Shinde, William McGraw, Andrei Krishkevich, Rachel Bright, Jirat, Ian Dundore
--

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In this episode, Hank goes over Reversible Reactions, the water dissociation constant, what pH and pOH actually mean, Acids, Bases, and Neutral Substances as well as the not-so-terrifying Logarithms, strong acids, weak acids, and how to calculate pH and pOH. Oh, and litmus paper!

***** AND NOW, A SUBBABLE MESSAGE! *****
"Daisy, we love you more than you love John and Hank!
From Mum and Nemo."

--
Table of Contents
Reversible Reactions 3:40
Water Dissociation Constant 5:00
Acids, Bases, & Neutral Substances 6:38
Strong and Weak Acids 7:43
Logarithms 1:46
Calculating pH and pOH 8:45
Cool Mathematical Connections 9:54

--
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If you’re looking for the perfect playlist for your kid's party or if they’re looking to have a dance session all on their own, look no further! Dance along with Team Umizoomi, PAW Patrol, Bubble Guppies, and more! You can find more of your kid’s favorite shows weekday mornings on Nickelodeon and everywhere you find Nick Jr.

Here’s over 5 minutes of awesome music from Nick Jr.! When you watch this music collection with your little rock star, you’ll get to see reimagined versions of your child’s favorite characters including Rubble, Chase, Skye and more from the PAW Patrol, Molly and Gil from Bubble Guppies, Shimmer and Shine, and Milli, Geo, and Bot from Team Umizoomi! There are even original Nick Jr. songs and music videos! So sing about your hair with Team Umizoomi; magic carpet rides with Shimmer and Shine; and even a birthday song with you’re Nick Jr. friends! Looking for more music? Find full episodes in the FREE Nick Jr. App.

#PAWPatrol #NickJr #Music #Nickelodeon #BubbleGuppies #TeamUmizoomi

Watch your favorite Nick Jr. shows weekdays on Nickelodeon: http://nickjr.com/tvschedule/

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Preschoolers can watch full episodes of your favorite Nick Jr. shows in the FREE Nick Jr. App.
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Stream Shimmer and Shine for free in the Nick Jr. App on Roku and Apple TV or download full episodes for offline viewing on iTunes or Google Play: https://play.google.com/store/apps/developer?id=Nickelodeon&hl=en

Download premium apps featuring your child's favorite Nick Jr. shows on iTunes, Google Play, and Amazon:
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You can also download Shimmer & Shine premium games and Nick Jr. apps on iTunes, Google Play, and Amazon:

Shimmer and Shine Enchanted Carpet Ride:
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Nick Jr. Draw and Play
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Nick Jr. Let’s Learn
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Super seekers, looking for some fun with Sunny and her friends? Watch this to play a game of hide-and-seek with Sunny, Doodle, Rox, and Blair!

It’s time for a sing along! Blaze and friends sing the ‘Let’s Blaze’ theme tune.

For more Nick Jr. activities and games visit : http://www.nickjr.co.uk/

It’s Nick Jr. Slime Time! Watch and help them guess which PAW Patrol friend we’re playing with today! You can find full episodes of ‘PAW Patrol’ weekday mornings on Nickelodeon, and everywhere you find Nick Jr.

If you play with slime you're going to love Nick Jr. Slime Time! Different color slime gets mixed and molded together to reveal a PAW Patrol pup!

Do you love Shimmer, Shine, and Tala? Watch this video to see how your favorite Shimmer & Shine characters are drawn by hand and colored in! Get creative and try drawing the characters yourself!

Dive into an underwater world of music and fun by dressing up as Nonny for Halloween!

Blaze and the Top Wing cadets are taking winter by storm! ❄️ Catch a sneak peek of the adventures to come with your preschoolers and tune into the premiere of the NEW episodes Friday, December 21 only on Nickelodeon.

Your favorite monster machines and highflying friends are taking the holidays to the extreme! Watch this sneak peek and see who’s looking cool on ice, braving a wild waterfall, and finding the hot chocolate before it cools! Tune in to Nickelodeon for a morning of wintry adventures featuring Blaze, Brody, Swift, Penny, and Rod on December 21. But first, catch an extended first look of the Top Wing premiere, right here! Kids can meet Survivor Bear, and get ready for an exciting adventure that ends in an icy incident. When the Top Wing cadets are called into action, will they make the rescue?

Watch full episodes of Blaze and the Monster Machines and Top Wing in the Nick Jr. App and everywhere you find Nick Jr.

#Blaze #NickJr #TopWing #SneakPeek #Kids #Nickelodeon

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Preschoolers can watch full episodes in the free Nick Jr. App.
iTunes: https://itunes.apple.com/us/app/nick-jr./id911115712?ls=1&mt=8
Google Play: https://play.google.com/store/apps/details?id=com.nick.android.nickjr&hl=en Amazon: https://www.amazon.com/gp/product/B01LQP0EL2

Stream Nick Jr. for free in the Nick Jr. App on Roku and Apple TV or download full episodes for offline viewing on iTunes or Google Play: https://play.google.com/store/search?q=nickelodeon&c=movies&hl=en

You can also download premium apps featuring your child's favorite Nick Jr. shows on iTunes, Google Play, and Amazon:
iTunes: https://itunes.apple.com/us/de....veloper/nickelodeon/
Google Play:https://play.google.com/store/apps/developer?id=Nickelodeon&hl=en
Amazon: https://www.amazon.com/s/ref=bl_sr_mobile-apps?_encoding=UTF8&field-brandtextbin=Nickelodeon&node=2350149011

Download premium Blaze and the Monster Machines games and apps on iTunes, Google Play, and Amazon:

Blaze and the Monster Machines Racing Game
iPhone: https://itunes.apple.com/us/app/blaze-monster-machines-racing/id907210971?ls=1&mt=8
iPad: https://itunes.apple.com/us/app/blaze-monster-machines-racing/id907174449?ls=1&mt=8
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Blaze and the Monster Machines Dinosaur Rescue
iPhone: https://itunes.apple.com/us/app/blaze-monster-machines-dinosaur/id1048260999?ls=1&mt=8
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Google Play: https://play.google.com/store/....apps/details?id=com. Amazon: https://www.amazon.com/gp/product/B019EIN2KI

The chase is on! There's a mischievous pooch on the loose named Sweetie who wants to get her paws on the king's crown, and it's up to the PAW Patrol to stop her. Can Ryder, Chase, Marshall, Skye, and the rest of the PAW Patrol save the crown before time runs out? Kids can watch the trailer of this animated cartoon special to get a sneak peek, and then make sure the whole family tunes in for the full episode of PAW Patrol: Mission PAW, premiering Friday, March 24th at 12 noon, only on Nickelodeon. It's gonna be a royally good time!

#PawPatrol #NickJr

Watch PAW Patrol weekdays on Nickelodeon and all week long on the Nick Jr. channel: http://nickjr.com/tvschedule/

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Preschoolers can watch Paw Patrol full episodes, play games, and more in the free Nick Jr. App and at NickJr.com
iTunes: https://itunes.apple.com/us/app/nick-jr./id911115712?ls=1&mt=8
Google Play: https://play.google.com/store/apps/details?id=com.nick.android.nickjr&hl=en
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NickJr.com: http://NickJr.com

Stream full episodes for free in the Nick Jr. App on Roku and Apple TV or download episodes for offline viewing on iTunes and Google Play: https://play.google.com/store/search?q=nickelodeon&c=movies&hl=en

Download premium PAW Patrol games and apps on iTunes, Google Play and Amazon:

PAW Patrol Draw & Play:
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PAW Patrol Pups to the Rescue
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PAW Patrol Pups Take Flight
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Kinderen zullen het geweldig vinden om naar het Bubble Guppies-lied van Nick Jr. te luisteren! Maak het leuk om te leren met Molly, Gil en hun vrienden in hun onderwaterklaslokaal. Zing en dans mee met de zwem-sationele muziekvideo. Oefen je Nederlands met je vrienden uit Bubble Guppies! Op de Nick-Jr. vind je meer muziekvideo's en peuterklasliedjes van Bubble Guppies! nickjr.tv

#BubbleGuppies #NickJr

Bub-Bub-Bubbel
Gup-Gup-Guppies
Bubbel-Bubbel-Bubbel
Guppy-guppy-guppy
Bubbel!
Bubbel!
Guppy!
Guppy!
Bubbel Guppies!
Ik ben Molly!
Ik ben Gil!
Ik ben Goby!
Ik ben Deema!
Ik ben Oona!
En ik ben Nonny!
Waf-waf!
Bubbel-puppy!
Bub-Bub-Bubbel Gup-Gup-Guppies

Bubbel-Bubbel-Bubbel
Guppy-guppy-guppy
Bubbel!
Bubbel!
Guppy!
Guppy!
Bubbel Guppies!
Bubbel Guppies!

Prepare for takeoff with Penny, Rod, Swift, and Brody in the brand-new series, Top Wing, premiering this November on Nickelodeon! Catch a glimpse of these four rescue birds-in-training as they dive underwater, soar through the sky, and race to the rescue in their super cool vehicles! Want more action-packed adventure with our Top Wing Academy cadets? Check out an exclusive full episode of Top Wing right now in the Nick Jr. App, at NickJr.com, or at Nick Jr. on demand.

To find Nick Jr. music videos from our collection of kids songs, plus Nick Jr. games for kids, visit the FREE Nick Jr. App or go to NickJr.com.

Watch Top Wing, weekdays on Nickelodeon: http://nickjr.com/tvschedule/

#TopWing #NickJr #Games #Videos #Music #Kids #Nickelodeon

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Preschoolers can watch full episodes online, play games, and discover silly surprises in the free Nick Jr. App and at NickJr.com.
iTunes: https://itunes.apple.com/us/app/nick-jr./id911115712?ls=1&mt=8
Google: https://play.google.com/store/....apps/details?id=com.
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Web: http://www.nickjr.com/

Stream Nick Jr. for free in the Nick Jr. App on Roku and Apple TV or download full episodes for offline viewing on iTunes or Google Play: https://play.google.com/store/apps/developer?id=Nickelodeon&hl=en

You can also download premium apps featuring your child's favorite Nick Jr. shows on iTunes, Google Play, and Amazon:
iTunes: https://itunes.apple.com/us/de....veloper/nickelodeon/ Google Play:https://play.google.com/store/apps/developer?id=Nickelodeon&hl=en
Amazon: https://www.amazon.com/s/ref=bl_sr_mobile-apps?_encoding=UTF8&field-brandtextbin=Nickelodeon&node=2350149011

Download premium Nick Jr. games and apps on iTunes, Google Play, and Amazon:

Nick Jr. Draw and Play
iPhone: https://itunes.apple.com/us/app/nick-jr-draw-play/id513395037?ls=1&mt=8
iPad: https://itunes.apple.com/us/app/nick-jr-draw-play-hd/id513414742?ls=1&mt=8
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Nick Jr. Let’s Learn
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ChuChu TV Spanish Nursery Rhymes For Kids

Cuentos Infantiles para Dormir en Español – El Perro y el Hueso – Huevos Sorpresa de Juguetes ChuChu TV Cuentacuentos

Spanish Nursery Rhymes Collection For Children - Johny Johny Sí Papá y muchas más Canciones Infantiles Populares | ChuChu TV

00:07 Johny Johny Sí Papa
01:41 Canción de Números 1 a 20
07:01 Hickory Dickory Dock
08:53 Las Ruedas del Autobús (PARTE 1)
10:49 Las Ruedas del Autobús (PARTE 2)
12:47 Hay Un Gatito
14:41 Campana Ding Dong
17:06 Humpty Dumpty
19:05 Cinco Monitos Saltando En La Cama | Los Monitos Traviesos
21:59 Cinco Patitos
23:56 Las Ruedas Del Autobús | La Ciudad de Nueva York
26:23 Uno Dos Abrochar Zapatos
28:24 Si Tú Estás Muy Feliz Aplaude Así (Clap Clap)
31:12 ¡La Canción de Los Colores!
33:47 Hippo Canción de La Familia Dedo
36:42 Canción de La Familia Dedo
42:08 Rema, Rema, Rema Tu Barco
43:48 Pan de Cruz
45:52 Cabeza, Hombros, Rodillas y Pies

Familia Dedo Elefante | ChuChu TV Canciones de Familia Dedo de Animales & Canciones Infantiles para Niños