Chemistry crash course

Chemistry crash course DEFAULT

NOW AVAILABLE: 2021 AP CHEMISTRY REVIEW COURSE to accompany AP Crash Course Review book - Opens April 1st.

Chemistry educator Adrian Dingle is the creator of the award-winning website, The site has been recommended by many educational bodies including the BBC and the National Science Teachers Association.

With extensive experience of teaching in both the UK and USA, Dingle now lives and teaches in Atlanta, GA, USA.

Dingle's first book was "The Periodic Table: Elements With Style".

Written in association with consultant Dr. Mark Winter (acclaimed creator of and brilliant illustrator, artist and designer Simon Basher, the book brings to life the elements of the periodic table by giving them real-life personalities! As part of the phenomenal success of the book it was nominated for the 2008 ALCS, Educational Writers' Award.

Dingle's Second book is "How to Make A Universe With 92 Ingredients".

The chemistry behind everyday objects and natural phenomena is explained in simple terms amidst a backdrop of stunning graphical color in this beautifully designed, hardback book. A real treat for eyes, the book delivers fascinating information in an easy to comprehend manner.

'92' was nominated for the School Library Association of the UK's Information Book Award in 2011 which it went on to win.

In January of 2012, '92' won the 'Wissenschaftsbuch des Jahre', a prestigious literary award sponsored by the Austrian Ministry for Science.


When you need just the essentials of college chemistry, this Easy Outlines book is there to help

If you are looking for a quick nuts-and-bolts overview of college chemistry, it's got to be Schaum's Easy Outline. This book is a pared-down, simplified, and tightly focused version of its Schaum's Outline cousin, with an emphasis on clarity and conciseness.

Graphic elements such as sidebars, reader-alert icons, and boxed highlights stress selected points from the text, illuminate keys to learning, and give you quick pointers to the essentials.

  • Perfect if you have missed class or need extra review
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Topics include: Quantities and Units, Moles and Empirical Formula, Calculations based on Chemical Equations, Concentration and Solution Stoichiometry, The Ideal Gas Law and Kinetic Theory, Thermochemistry, Atomic Structure, Chemical Bonding and Molecular Structure, Solids and Liquids, Oxidation-Reduction, Properties of Solutions, Thermodynamics and Chemical Equilibrium, Acids and Bases, Precipitates, Electrochemistry, Rates of Reactions

Textbooks can only be purchased by selecting courses. Please visit the Course List Builder to get started.

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2013-02-04 Crash Course Chemistry Preview! 01:51 109,937 Play 2013-02-12 The Nucleus: Crash Course Chemistry #1 10:12 4,177,667 Play 2013-02-19 Unit Conversion & Significant Figures: Crash Course Chemistry #2 11:24 2,239,413 Play 2013-02-25 The Creation of Chemistry - The Fundamental Laws: Crash Course Chemistry #3 10:59 1,495,201 Play 2013-03-05 The Periodic Table: Crash Course Chemistry #4 11:22 3,277,178 Play 2013-03-12 The Electron: Crash Course Chemistry #5 12:48 1,981,028 Play 2013-03-19 Stoichiometry: Chemistry for Massive Creatures - Crash Course Chemistry #6 12:47 1,993,708 Play 2013-03-26 Water and Solutions -- for Dirty Laundry: Crash Course Chemistry #7 13:34 1,151,191 Play 2013-04-02 Crash Course Out-Takes Chemistry #1 06:45 113,953 Play 2013-04-09 Acid-Base Reactions in Solution: Crash Course Chemistry #8 11:17 2,218,870 Play 2013-04-15 Precipitation Reactions: Crash Course Chemistry #9 11:31 1,160,333 Play 2013-04-23 Redox Reactions: Crash Course Chemistry #10 11:13 1,800,036 Play 2013-04-30 How To Speak Chemistrian: Crash Course Chemistry #11 10:43 941,186 Play 2013-05-07 The Ideal Gas Law: Crash Course Chemistry #12 09:03 1,227,220 Play 2013-05-14 Ideal Gas Problems: Crash Course Chemistry #13 11:45 619,649 Play 2013-05-20 Real Gases: Crash Course Chemistry #14 11:35 520,073 Play 2013-05-29 Partial Pressures & Vapor Pressure: Crash Course Chemistry #15 11:55 645,009 Play 2013-06-04 Passing Gases: Effusion, Diffusion and the Velocity of a Gas - Crash Course Chemistry #16 11:26 374,295 Play 2013-06-11 Energy & Chemistry: Crash Course Chemistry #17 09:26 811,267 Play 2013-06-18 Enthalpy: Crash Course Chemistry #18 11:24 1,379,671 Play 2013-06-25 Calorimetry: Crash Course Chemistry #19 11:57 846,983 Play 2013-07-02 Entropy: Embrace the Chaos! Crash Course Chemistry #20 13:41 1,019,623 Play 2013-07-08 Lab Techniques & Safety: Crash Course Chemistry #21 09:03 857,137 Play 2013-07-16 Atomic Hook-Ups - Types of Chemical Bonds: Crash Course Chemistry #22 09:46 1,395,479 Play 2013-07-23 Polar & Non-Polar Molecules: Crash Course Chemistry #23 10:46 1,889,945 Play 2013-07-30 Bonding Models and Lewis Structures: Crash Course Chemistry #24 11:38 1,270,554 Play 2013-08-05 Orbitals: Crash Course Chemistry #25 10:52 1,463,736 Play 2013-08-13 Liquids: Crash Course Chemistry #26 11:04 423,413 Play 2013-08-19 Solutions: Crash Course Chemistry #27 08:21 662,981 Play 2013-08-27 Equilibrium: Crash Course Chemistry #28 10:57 1,096,327 Play 2013-09-03 Equilibrium Equations: Crash Course Chemistry #29 09:29 754,831 Play 2013-09-09 pH and pOH: Crash Course Chemistry #30 11:23 986,283 Play 2013-09-16 Buffers, the Acid Rain Slayer: Crash Course Chemistry #31 11:41 571,897 Play 2013-09-24 Kinetics: Chemistry's Demolition Derby - Crash Course Chemistry #32 09:57 512,492 Play 2013-09-30 Crash Course Chemistry: Outtakes #2 08:29 150,776 Play 2013-10-07 Doing Solids: Crash Course Chemistry #33 09:18 561,291 Play 2013-10-14 Network Solids and Carbon: Crash Course Chemistry #34 08:20 207,254 Play 2013-10-22 Silicon - The Internet's Favorite Element: Crash Course Chemistry #35 09:27 245,429 Play 2013-10-29 Electrochemistry: Crash Course Chemistry #36 09:04 1,417,597 Play 2013-11-04 The History of Atomic Chemistry: Crash Course Chemistry #37 09:42 1,030,166 Play 2013-11-11 Nuclear Chemistry: Crash Course Chemistry #38 09:58 1,092,981 Play 2013-11-19 Nuclear Chemistry Part 2: Fusion and Fission - Crash Course Chemistry #39 11:18 633,607 Play 2013-11-26 Hydrocarbon Power! - Crash Course Chemistry #40 11:32 1,204,029 Play 2013-12-02 Crash Course Chemistry: Outtakes #3 06:44 143,457 Play 2013-12-09 Alkenes & Alkynes - Crash Course Chemistry #41 09:36 690,904 Play 2013-12-16 Aromatics and Cyclic Compounds - Crash Course Chemistry #42 09:50 486,526 Play 2013-12-23 Hydrocarbon Derivatives - Crash Course Chemistry #43 08:38 446,469 Play 2013-12-30 Nomenclature - Crash Course Chemistry #44 09:05 850,007 Play 2014-01-06 Polymers - Crash Course Chemistry #45 10:15 1,009,870 Play 2014-01-13 The Global Carbon Cycle - Crash Course Chemistry #46 10:34 713,793 Play 2014-01-20 Crash Course Chemistry: Outtakes #4 08:35 101,015 Play

Crash Course (YouTube)

Educational YouTube channel

For other uses, see Crash Course (disambiguation).

Crash Course (sometimes stylized as CrashCourse) is an educational YouTube channel started by John and Hank Green (collectively the Green brothers), who first achieved notability on the YouTube platform through their VlogBrothers channel.[1][2][3]

Crash Course was one of the hundred initial channels funded by YouTube's $100 million original channel initiative. The channel launched a preview on December 2, 2011, and as of January 2021[update], it has accumulated over 12 million subscribers and 1.5 billion video views.[4] The channel launched with John and Hank presenting their respective World History and Biology series; the early history of the channel continued the trend of John and Hank presenting humanities and science courses, respectively.[5] In November 2014, Hank announced a partnership with PBS Digital Studios, which would allow the channel to produce more courses. As a result, multiple additional hosts joined the show to increase the number of concurrent series.[citation needed]

To date, there are 44 main series of Crash Course, of which John has hosted nine and Hank has hosted seven. Together with Emily Graslie, they also co-hosted Big History. A second channel, Crash Course Kids, is hosted by Sabrina Cruz and has completed its first series, Science. The first foreign-language course, an Arabic reworking of the original World History series, is hosted by Yasser Abumuailek. The main channel has also begun a series of shorter animated episodes, called Recess, that focus on topics from the previous Crash Course series. A collaboration with Arizona State University titled Study Hall began in 2020, which includes less structured learning in its topics.

Series overview[edit]

Main series[edit]

Series Episodes Series premiere Series finale Host(s) Writer(s)
Launched in 2012
World History
World History 2
January 26, 2012
July 11, 2014
November 9, 2012
April 4, 2015
John GreenRaoul Meyer
Biology40 January 30, 2012 October 29, 2012 Hank Greenvarious
Ecology12 November 5, 2012 January 21, 2013 Hank GreenJesslyn Shields
English Literature
Literature 2
Literature 3
Literature 4
November 15, 2012
February 27, 2014
July 7, 2016
November 7, 2017
January 24, 2013
June 12, 2014
September 8, 2016
February 13, 2018
John GreenAlexis Soloski
Launched in 2013
U.S. History48 January 31, 2013 February 6, 2014 John GreenRaoul Meyer
Chemistry46 February 11, 2013 January 13, 2014 Hank GreenKim Krieger
Launched in 2014
Psychology40 February 3, 2014 November 24, 2014 Hank GreenKathleen Yale
Big History
Big History 2
September 17, 2014
May 24, 2017
January 9, 2015
July 12, 2017
Hank Green
John Green
Emily Graslie[n 2]
David Baker
Launched in 2015
Anatomy & Physiology47 January 6, 2015 December 21, 2015 Hank GreenKathleen Yale
Astronomy46 January 15, 2015 January 21, 2016 Phil PlaitPhil Plait
U.S. Government and Politics50 January 23, 2015 March 4, 2016 Craig BenzineRaoul Meyer
Intellectual Property7 April 23, 2015 June 25, 2015 Stan Muller Raoul Meyer
Economics35 July 8, 2015 June 9, 2016 Adriene Hill
Jacob Clifford[n 3]
Patrick Walsh
Jacob Clifford
Scott Baumann
Launched in 2016
Philosophy46 February 8, 2016 February 13, 2017 Hank GreenRuth Tallman
Physics46 March 31, 2016 March 24, 2017 Shini SomaraAlyssa Lerner
Games29 April 1, 2016 December 16, 2016 Andre Meadows Mathew Powers
Launched in 2017
Computer Science40 February 22, 2017 December 21, 2017 Carrie Anne PhilbinAmy Ogan
Chris Harrison
World Mythology41 February 24, 2017 January 28, 2018 Mike Rugnetta Raoul Meyer
Sociology44 March 13, 2017 February 12, 2018 Nicole Sweeney Steven Lauterwasser
Film History
Film Production
Film Criticism
April 13, 2017
August 24, 2017
January 11, 2018
August 3, 2017
December 14, 2017
April 26, 2018
Craig Benzine
Lily Gladstone
Michael Aranda
Tobin Addington
Study Skills10 August 8, 2017 October 10, 2017 Thomas Frank Thomas Frank
Launched in 2018
Statistics44 January 24, 2018 January 9, 2019 Adriene Hill Chelsea Parlett-Pelleriti
Theater50 February 9, 2018 March 1, 2019 Mike Rugnetta Alexis Soloski
Media Literacy12 February 27, 2018 May 15, 2018 Jay SmoothAubrey Nagle
History of Science46 March 26, 2018 April 29, 2019 Hank GreenWythe Marschall
Engineering46 May 17, 2018 May 2, 2019 Shini SomaraMichael Sago
Ricky Nathvani
Launched in 2019
Navigating Digital Information10 January 8, 2019 March 12, 2019 John GreenAubrey Nagle
Business: Soft Skills
Business: Entrepreneurship
March 13, 2019
August 14, 2019
July 3, 2019
December 11, 2019
Evelyn Ngugi
Anna Akana
Rebecca Upton
Madeline Doering
European History50 April 12, 2019 August 28, 2020 John GreenBonnie Smith
Artificial Intelligence20 August 9, 2019 December 27, 2019 Jabril Ashe Lana Yarosh
Yonatan Bisk
Tim Weninger
Launched in 2020
Organic Chemistry35[6]April 30, 2020 Deboki Chakravarti Kelley Donaghy
Kat Day
Andy Brunning
Kristen Procko
Linguistics16 September 11, 2020 January 22, 2021 Taylor Behnke Gretchen McCulloch
Lauren Gawne
Geography27[7]November 30, 2020 Alizé Carrère Alizé Carrère
Jane P. Gardner
Launched in 2021
Zoology14 April 15, 2021 July 15, 2021 Rae Wynn-GrantBrittney G. Borowiec
Black American History19[8]May 7, 2021 Clint SmithClint Smith
Outbreak Science3[9]September 7, 2021 Pardis SabetiRicky Nathvani

Kids series[edit]

Foreign language series[edit]

Series Language Episodes Series premiere Series finale Host
World History[n 5]Arabic 42 January 19, 2018 July 5, 2018 Yasser Abumuailek


Series Episodes Series premiere Series finale
Recess2 March 5, 2018 October 2, 2018
A History of Crash Course1 December 4, 2018
How Crash Course is Made[n 6]6 March 22, 2019 April 10, 2019
Covid-19 and Public Health[n 7]1 October 19, 2020
Crash Course Previews49 December 2, 2011 August 31st, 2021

Study Hall series[edit]

A partnership with Arizona State University and hosted on their channel.

Series Episodes Series premiere Series finale Host
Composition15 April 1, 2020 July 7, 2020 Yumna Samie
Algebra15 April 23, 2020 July 30, 2020 James Tanton
Chemistry15 September 1, 2020 December 15, 2020 Will Comar
Data Literacy15 September 3, 2020 December 17, 2020 Jessica Pucci


In an interview with Entrepreneur, Crash Course producer and Sociology host Nicole Sweeney detailed:

Every year we have a big pitch meeting to determine what courses and things we're going to do the next year. In that meeting, we talk about a number of different things, but the rising question that motivates that meeting and then down the line as we're making decisions about what we're doing is what we think would be most useful for people.[10]

To make its content as useful as possible to viewers, the Crash Course channel hires experts relating to the topics of its series to work on the show.[11] The Missoula-filmed series are produced and edited by Nicholas Jenkins, while Blake de Pastino serves as script editor. The Indianapolis-filmed series is produced and edited by Stan Muller, Mark Olsen, and Brandon Brungard. Script editing is credited to Meredith Danko, Jason Weidner composes music for the series,[12] and Sweeney serves as a producer, editor, and director for Crash Course.[10] Raoul Meyer, an AP World History teacher and Green's former teacher at Indian Springs School, wrote the World History series, with John providing revisions and additions.[13] Sweeney has said that she and the respective host go over each script after it is edited to assess it for content.[10]

Sweeney also stated that each ten-minute episode takes about an hour to film.[10] The Philosophy series and all series relating to science (with the exception of Computer Science) were filmed in a studio building in Missoula, Montana that also houses SciShow.[14] The Biology and Ecology series were filmed in front of green screen, but from the Chemistry season onward, each series was filmed on new custom-built sets. The Computer Science series and all series on the humanities (excepting Philosophy and Economics) were filmed in a studio in Indianapolis, Indiana. In addition, Economics was filmed at the YouTube Space in Los Angeles, while Crash Course Kids was filmed in a studio in Toronto, Ontario. Crash Course Kids was directed by Michael Aranda and produced by the Missoula Crash Course team.

Once filmed, an episode goes through a preliminary edit before it is handed off to the channel's graphic contractor. Graphic design for all of the series except Biology and Ecology is provided by Thought Café (formerly Thought Bubble),[10] and the sound design and music for these series are provided by Michael Aranda (and in later series, his company Synema Studios.)

History and funding[edit]

YouTube-funded and Subbable periods (2011–2014)[edit]

Hank (left) and John Green (right) co-created Crash Courseand hosted the initial Biologyand World Historyseries, respectively.

The Crash Course YouTube channel was conceived by the Green Brothers after YouTube approached them with an opportunity to launch one of the initial YouTube-funded channels as part of the platform's original channel initiative.[15][16] The channel was teased in December 2011,[17] and then launched on January 26, 2012, with the first episode of its World History series, hosted by John Green.[18] The episode covered the Agricultural Revolution, and a new episode aired on YouTube every Thursday through November 9, 2012. Hank Green's first series, Crash Course Biology, then launched on January 30, 2012, with its first episode covering carbon. A new episode aired on YouTube every Monday until October 22 of that year. The brothers would then go on to end 2012 with two shorter series, with John and Hank teaching English literature and ecology, respectively.

Following their launch year, John and Hank returned in 2013 with U.S. History and Chemistry, respectively. However, that April, John detailed that Crash Course was going through financial hardships;[19] in July, Hank uploaded a video titled "A Chat with YouTube", in which he expressed his frustration with the ways YouTube had been changing and controlling its website.[20][21] Eventually, YouTube's original channel initiative funding ran out, and shortly after Hank's video, the Green brothers decided to launch Subbable, a crowdfunding website where viewers could donate monthly to channels in exchange for perks.[22] On launching Subbable, Hank Green stated: "We ascribe to the idealistic notion that audiences don't pay for things because they have to[,] but because they care about the stuff that they love and want it to continue to grow".[22]Crash Course was the first channel to be offered on Subbable, and for a time the website crowdfunded the channel.[23] In March 2015, Subbable was acquired by Patreon, and Crash Course's crowdfunding moved over as part of the acquisition.

In May 2014, John mentioned an upcoming 10-episode Crash Course season on Big History, funded by a grant from one of Bill Gates' organizations.[24] The series outlined the history of existence, from the Big Bang forward into the evolution of life. Both Green brothers hosted the series, with Emily Graslie also participating as a guest host.[25]

Partnership with PBS Digital Studios (2014–2017)[edit]

In 2014, Crash Course announced a partnership with PBS Digital Studios, which began in 2015 with the Astronomy and U.S. Government and Politics series.[26] In addition funding the channel itself, the partnership also entails PBS Digital Studios helping Crash Course to receive sponsorships.[10] As a result of the partnership as well as John commencing a year-long hiatus from the show in 2015, additional hosts were added to increase the number of concurrent series. Though the partnership meant PBS Digital Studios would assist with the production of Crash Course, the channel continued to receive funding from its audience through Patreon.[27] In April 2015, The Guardian reported that Crash Course received $25,900 per month through Patreon donations.[27] Aside from the new series on the main channel, Crash Course Kids was launched in February on a new Crash Course Kids channel.[28] The series was hosted by Sabrina Cruz, known on YouTube as NerdyAndQuirky.[29]

On October 12, 2016, the Crash Course YouTube channel uploaded a preview for Crash Course Human Geography. Hosted by Miriam Nielsen, the course was to discuss "what Human Geography isn't, and what it is, and discuss humans in the context of their world." Two episodes were posted during each of the following two weeks; however, the videos were removed on October 27, with John Green stating on Twitter that "...we got important things wrong. We'll rework the series... And we'll bring a better series to you in a few months."[30] On October 31, John further explained that the videos were removed due to "factual mistakes as well as too strident a tone," and that the mishap was caused by a rushed production stemming from a lack of staffing and budgeting.[31] The following October, during an "Ask Me Anything" (AMA) session on Reddit, John indicated the course may not return for some time, noting that "we don't feel like we've cracked it yet."[32] The channel would go on to launch their Geography course in November 2020, intended to cover both physical and human geography over its run.

In 2017, Crash Course launched three film-related series: one covered film history, another film production, and the last of which covered film criticism.[33] Also in 2017, Thomas Frank began hosting Crash Course Study Skills, which covered topics such as productivity skills, time management, and note-taking.[34]

Complexly branding and YouTube Learning Fund (2018–2019)[edit]

Anna Akana hosted Business: Entrepreneurshipin 2019.

Starting with the Statistics course in early 2018, Crash Course series that are not PBS co-productions began to directly identify as Complexly productions. Also that year, Crash Course launched an Arabic-language edition of World History hosted by Yasser Abumuailek and produced by Deutsche Welle (DW), which was uploaded to DW's Arabic YouTube channel.[35] In July 2018, YouTube announced its YouTube Learning initiative, dedicated to supporting educational content on the platform. A few months later, as $20 million was invested into expanding the initiative, Crash Course secured additional funding via the initiative's Learning Fund program.[36][37] However, PBS Digital Studios remained one of the primary sources of funding Crash Course, and the network also continued to help in finding sponsorships for the show.[10]

The channel surpassed 1 billion video views in February 2019.[38] In July, YouTube launched Learning Playlists as a continuation of their Learning Fund initiative;[39] while videos in Learning Playlists notably lack recommended videos attached to them, in contrast to videos included in regular playlists on YouTube,[39] they also include organizational features such as chapters around key concepts and lessons ordered by difficulty. After Learning Playlists' launch, Crash Course's video content was formatted into several of these playlists.[39] The channel reached 10 million subscribers in November 2019.[40]

Partnership with Arizona State University (2020–21)[edit]

A collaboration with Arizona State University (ASU) titled Study Hall was announced in March 2020, which includes less structured learning in its topics. It was hosted by ASU alumni and advised by their faculty, with episodes posted on the university's YouTube channel but production and visual design by Complexly in the Crash Course style.[41]


Crash Course video series feature various formats depending on the host's presentation style as well as the subject of the course. However, throughout all series, the show's host will progressively elaborate on the topic(s) presented at the beginning of the video. Early on in the history of the show, the Green Brothers began to employ an edutainment style for episodes of Crash Course, using humor to blend entertainment together with the educational content.[42]

The World History series featured recurring segments such as the "Open Letter," where Green reads an open letter to a historical figure, period, item, or concept. Occasionally he converses with a naïve, younger version of himself whom he calls "Me from the Past"; this character usually has naïve or obvious questions or statements about the topic of the video.[5][43] A running joke throughout the series is that the Mongols are a major exception to most sweeping generalizations in world history, noted by the phrase "...unless you are the Mongols". Mentions of this fact cue the "Mongoltage" (a portmanteau of "Mongol" and "montage"), which shows a drawing of Mongols shouting "We're the exception!" followed by a three-second clip of a scene from the 1963 film Hercules Against the Mongols depicting a village raid. Green also frequently encouraged his viewers to avoid looking at history through Eurocentric or "Great Man" lenses, but instead to be conscious of a broader historical context.

For U.S. History, Green followed the tone set by World History and put an emphasis on maintaining an open, non-Western view of American History. In addition, the "Open Letter" was replaced by a new segment called the "Mystery Document", in which Green would take a manuscript from the fireplace's secret compartment and read it aloud, followed by him guessing its author and the source work it is excerpted from. If incorrect, he would be punished by a shock pen. While the Mongoltage was largely absent, mentions of America's national pride during the series would cue a new "Libertage", which consisted of photos associated with America atop an American flag, with a guitar riff and an explosion at the start and end of the montage, respectively.

The Biology program featured the recurring segment "Biolo-graphy," during which Hank relayed a short biography of someone who was associated with the topic of the episode. Additionally, at the conclusion of each episode, Hank provided YouTube annotations with links to every subtopic he explained within the video. He also noted that the successor series to Biology, Crash Course Ecology, would follow in the spirit of the former series.[44]

Other releases[edit]

DVD box sets of the complete run of the Biology series and of season 1 of World History were made available for pre-order on October 31, 2013.[45] In June 2016, the show's official site launched, providing free offline downloads of all episodes of every series completed to date.[46] In May 2020, an official mobile app launched, providing easy access to all of the courses' video content along with rolling out flashcard and quiz study aides for particular courses.[47]


Overall, the Crash Course project has been successful in its reach, with World History alone having attracted millions of viewers.[48] It had a particular appeal to American students taking the AP World History class and exam; many students and teachers use the videos to supplement their courses.[2][49][50] In addition, various Crash Course episodes have been featured in online media publications.[51][52]

Awards and nominations[edit]


  1. ^Pot, Justin (April 7, 2012). "Crash Course: Entertaining YouTube Courses On History & Biology". MakeUseOf. Archived from the original on June 21, 2012. Retrieved July 8, 2012.
  2. ^ abRoettgers, Janko (February 16, 2012). "A first look at YouTube's new TV stars". GigaOM. Archived from the original on January 17, 2013. Retrieved July 8, 2012.
  3. ^Leib, Bart (March 23, 2012). "Scishow & Crash Course: Why Isn't School This Cool?". Wired. Archived from the original on October 11, 2014. Retrieved July 8, 2012.
  4. ^"crashcourse YouTube Stats, Channel Statistics". Social Blade. Archived from the original on January 13, 2021. Retrieved January 14, 2021.
  5. ^ abTalbot, Margaret (June 9, 2014). "The Teen Whisperer". The New Yorker. Archived from the original on October 19, 2014. Retrieved October 20, 2014.
  6. ^Polymer Chemistry: Crash Course Organic Chemistry #35, retrieved 2021-09-22
  7. ^Natural Hazards: Crash Course Geography #27, retrieved 2021-09-22
  8. ^Reconstruction: Crash Course Black American History #19, retrieved 2021-09-25
  9. ^Why Do We Have Fewer Outbreaks? Epidemiological Transition: Crash Course Outbreak Science #3, retrieved 2021-09-22
  10. ^ abcdefgZipkin, Nina (November 7, 2018). "The Simple Question the Producers of the Wildly Popular 'Crash Course' Ask Themselves When Creating Content". Entrepreneur. Archived from the original on April 17, 2019. Retrieved August 31, 2019.
  11. ^Bernstein, Hannah (August 22, 2019). "Fake climate science videos have millions of views on YouTube. Here's what scientists can do about it". Ensia. Archived from the original on August 31, 2019. Retrieved August 31, 2019.
  12. ^ ab"Crash Course -- The Webby Awards". Webby Awards. 2018. Retrieved September 17, 2019.
  13. ^"History Teacher Discovers Talent As Educational Web Writer". Columbia Grammar & Preparatory School. November 5, 2013. Archived from the original on November 10, 2013. Retrieved February 7, 2014.
  14. ^Green, Hank (December 21, 2012). Meet the Team: The Missoula Office (And P4A and TheBrainScoop). Crash Course. YouTube. Archived from the original on March 22, 2013. Retrieved February 5, 2013.
  15. ^Roettgers, Janko (February 1, 2012). "Cool for school: Education is a big hit on YouTube". GigaOM. Archived from the original on February 9, 2013. Retrieved July 8, 2012.
  16. ^Gutelle, Sam (October 16, 2012). "Barack Obama Watches The Vlogbrothers". Tubefilter. Archived from the original on November 3, 2012. Retrieved October 23, 2012.
  17. ^Green, John (December 2, 2011). Crash Course Preview. Crash Course. YouTube. Archived from the original on April 12, 2013. Retrieved September 13, 2013.
  18. ^Higgins, Chris (February 9, 2012). "John Green's Crash Course in World History". mental_floss. Archived from the original on August 28, 2012. Retrieved July 8, 2012.
  19. ^Gutelle, Sam (April 2, 2013). "John Green Talks 'Crash Course', 'Hank Games', And Hats In Reddit IamA". Tubefilter. Archived from the original on December 5, 2013. Retrieved September 13, 2013.
  20. ^Gutelle, Sam (July 17, 2013). "Hank Green Is Pissed Off About YouTube's Constant Changes". Tubefilter. Archived from the original on October 10, 2013. Retrieved September 13, 2013.
  21. ^Green, Hank (July 17, 2013). A Chat with YouTube. hankschannel. YouTube. Archived from the original on December 3, 2013. Retrieved September 13, 2013.
  22. ^ abEifler, Emily (August 20, 2013). "Crowdfunding Matures with a Lesson from Public Broadcasting". Archived from the original on July 23, 2019. Retrieved November 30, 2018.
  23. ^Gutelle, Sam (July 22, 2013). "Vlogbrothers Launch Subbable, A 'Pay What You Want' Video Platform". Tubefilter. Archived from the original on August 22, 2013. Retrieved September 13, 2013.
  24. ^Green, John (May 20, 2014). Deserving. VlogBrothers. YouTube. Archived from the original on May 23, 2014. Retrieved May 22, 2014.
  25. ^"Big History Project - CrashCourse Videos". Big History Project. YouTube. Archived from the original on July 17, 2015. Retrieved September 7, 2014.
  26. ^Chmielewski, Dawn (November 7, 2014). "Vlogbrothers Bring "Crash Course" Videos to PBS Digital Studios". Recode. Archived from the original on March 3, 2016. Retrieved January 23, 2017.
  27. ^ abDredge, Stuart (April 8, 2015). "YouTube: Hank Green tells fellow creators to aim for '$1 per view'". The Guardian. Archived from the original on August 31, 2019. Retrieved August 31, 2019.
  28. ^Crash Course Kids Preview!. Crash Course Kids. YouTube. February 23, 2015. Archived from the original on January 17, 2019. Retrieved August 31, 2019.
  29. ^Lanning, Carly (September 16, 2015). "#WCW Sabrina Cruz is the queen of the nerds". The Daily Dot. Archived from the original on August 31, 2019. Retrieved August 31, 2019.
  30. ^@johngreen (October 27, 2016). "We're taking down the first two Crash Course Human Geography videos..." (Tweet) – via Twitter.
  31. ^Green, John (October 31, 2016). A Note on CC Human Geography. Crash Course. YouTube. Archived from the original on November 25, 2016. Retrieved October 31, 2016.
  32. ^Green, John. "I'm John Green, author of The Fault in Our Stars and Turtles All the Way Down. I'm in a bus for the next eight hours. AMA". Reddit. Retrieved October 17, 2017.
  33. ^Gutelle, Sam (April 7, 2017). "Educational YouTube Channel Crash Course Goes To The Movies With Trio Of Film Classes". Tubefilter. Archived from the original on August 31, 2019. Retrieved August 31, 2019.
  34. ^Belanger, Eleanore (June 4, 2019). "Crash Course, A YouTube Series, Has Students Nationwide Sighing In Relief". Study Breaks. Archived from the original on June 24, 2019. Retrieved August 31, 2019.
  35. ^@johngreen (January 19, 2018). "Really excited about our partnership with @DeutscheWelle on Crash Course in Arabic. World History in Arabic has launched, hosted by @The_Abumuailek" (Tweet) – via Twitter.
  36. ^Ducard, Malik (October 22, 2018). "YouTube Learning: Investing in educational creators, resources, and tools for EduTubers". Official YouTube Blog. Archived from the original on June 26, 2019. Retrieved August 31, 2019.
  37. ^Alexander, Julia (October 22, 2018). "YouTube is investing $20M in educational content, creators". The Verge. Archived from the original on August 31, 2019. Retrieved August 31, 2019.
  38. ^@TheCrashCourse (February 14, 2019). "Crash Course just hit 1 BILLION views!! Our Valentine's Day love goes to all of you who helped us get there ❤️ #AcademicValentine #ValentinesDay" (Tweet) – via Twitter.
  39. ^ abcLee, Dami (July 11, 2019). "YouTube is launching educational playlists that won't include algorithmic recommendations". The Verge. Archived from the original on September 4, 2019. Retrieved August 31, 2019.
  40. ^"We just hit 10 million subscribers! Thank you to all TEN MILLION of you for being part of this with us!!". @TheCrashCourse. Twitter. Retrieved 1 November 2019.
  41. ^Study Hall: Presented by Arizona State University and Crash Course. Arizona State University. YouTube. March 30, 2020. Retrieved March 31, 2020.
  42. ^Grantham, Nick (February 29, 2012). "Meet Two Brothers Who Bring Biology And History To Life". Fractus Learning. Archived from the original on March 5, 2012. Retrieved July 8, 2012.
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  44. ^Green, Hank (October 29, 2012). Ecology - Rules for Living on Earth: Crash Course Biology #40. Crash Course. YouTube. Archived from the original on November 1, 2012. Retrieved October 30, 2012.
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  47. ^"Announcing the Crash Course App!". Crash Course. YouTube. Retrieved 1 May 2020.
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  52. ^"John Green's Crash Course In Latin American History Covers Everything You Need To Know (VIDEO)". HuffPost. September 1, 2012. Archived from the original on September 4, 2012. Retrieved September 6, 2012.
  53. ^"5th Annual Winners & Nominees". Streamy Awards. 2015. Retrieved September 17, 2019.
  54. ^"Crash Course -- The Webby Awards". Webby Awards. 2015. Retrieved September 17, 2019.
  55. ^"6th Annual Winners & Nominees". Streamy Awards. 2016. Retrieved September 17, 2019.


  1. ^as of October 5th 2021
  2. ^Graslie is the sole host of the second season.
  3. ^Clifford departed after the 29th episode, with Hill presenting the remainder solo.
  4. ^Hosted on the Crash Course Kids channel.
  5. ^Hosted on the DW عربية channel.
  6. ^A partnership with Adobe and hosted on the Thought Café channel.
  7. ^A partnership with Operation Outbreak and the Sabeti Lab at Harvard.

External links[edit]


Course chemistry crash

Hydrocarbon Power! Crash Course Chemistry #40

In which Hank introduces us to the world of Organic Chemistry and, more specifically, the power of hydrocarbon. He talks about the classifications of organic compounds, the structures & properties of alkanes, isomers, and naming an alkane all by observing its structure.

Alkenes & Alkynes—Crash Course Chemistry #41

Today Hank talks about the deliciousness of alkenes & alkynes, their structures, and how to remember which is which by simply knowing the alphabet. Also, he breaks down hydrogenation, halogenation, polymerization, and triglycerides all while helping us figure out the meaning of different names for fats.

Hydrocarbon Derivatives—Crash Course Chemistry #43

Functional groups? Functional groups within functional groups? Hank takes today’s Crash Course video to discuss some confusing ideas about Hydrocarbon Derivatives, but then makes it all make more sense.

Nomenclature—Crash Course Chemistry #44

Ever feel like there’s a international team of bad guys changing all of the easily remembered chemical names and turning them into test-failing, number-infused, pain in the neck names? Well . . . you’re not wrong. IUPAC exists but try to keep in mind that they’re doing it for the greater good. In this episode, Hank talks about IUPAC, prefixes, suffixes, ranking, numbers for carbon chains, and cis or trans double bonds.

Physics Wallah Baby Anushka Mam Chemistry Baby full Video and bf Er Kp Singh Chemistry Viral Video


Crash Course Organic Chemistry Preview

Welcome to Crash Course Organic Chemistry hosted by Deboki Chakravarti! Starting next week, we'll be tackling the notoriously complicated subject of organic chemistry, and hopefully having some fun along the way!

Series Sources:
Brown, W. H., Iverson, B. L., Ansyln, E. V., Foote, C., Organic Chemistry; 8th ed.; Cengage Learning, Boston, 2018.
Bruice, P. Y., Organic Chemistry, 7th ed.; Pearson Education, Inc., United States, 2014.
Clayden, J., Greeves, N., Warren., S., Organic Chemistry, 2nd ed.; Oxford University Press, New York, 2012.
Jones Jr., M.; Fleming, S. A., Organic Chemistry, 5th ed.; W. W. Norton & Company, New York, 2014.
Klein., D., Organic Chemistry; 1st ed.; John Wiley & Sons, United States, 2012.
Louden M., Organic Chemistry; 5th ed.; Roberts and Company Publishers, Colorado, 2009.
McMurry, J., Organic Chemistry, 9th ed.; Cengage Learning, Boston, 2016.
Smith, J. G., Organic chemistry; 6th ed.; McGraw-Hill Education, New York, 2020.
Wade., L. G., Organic Chemistry; 8th


You will also be interested:

Ap(r) Chemistry Crash Course, Book + Online - (Advanced Placement (AP) Crash Course) 3rd Edition by Adrian Dingle (Paperback)

About the Book

"At REA, we invented the quick-review study guide for AP(R) exams. A decade later, REA's Crash Course(R) remains the top choice for AP(R) students who want to make the most of their study time and earn a high score"--Provided by publisher.

Book Synopsis

AP(R) Chemistry Crash Course(R)

A Higher Score in Less Time!

At REA, we invented the quick-review study guide for AP(R) exams. A decade later, REA's Crash Course(R) remains the top choice for AP(R) students who want to make the most of their study time and earn a high score.

Here's why more AP(R) teachers and students turn to REA's AP(R) Chemistry Crash Course(R)

Targeted Review - Study Only What You Need to Know. Our Crash Course(R) is based on an in-depth analysis of the latest AP(R) Chemistry course and exam description and sample AP(R) test questions released by the College Board. It covers only the information tested on the exam, so you can make the most of your valuable study time.

Expert Test-taking Strategies and Advice. Written by Adrian Dingle, an award-winning AP(R) Chemistry teacher and test development expert, the book gives you the topics and critical context that will matter most on exam day. Crash Course(R) relies on the author's extensive analysis of the test's structure and content. By following his advice, you can boost your score.

Practice questions - a mini-test in the book, a full-length exam online. Are you ready for your exam? Try our focused practice set inside the book. Then go online to take our full-length practice exam.You'll get the benefits of timed testing, detailed answers, and automatic scoring that pinpoints your performance based on the official AP(R) exam topics - so you'll be confident on test day.

Whether you're cramming for the exam or looking to recap and reinforce your teacher's lessons, Crash Course(R) is the study guide every AP(R) student needs.

About the Author

Adrian Dingle is a chemistry educator and author, with close to three decades of experience teaching in the United States and the United Kingdom. He is the creator of the award-winning chemistry website, and taught AP(R) Chemistry at the prestigious Westminster School in Atlanta, GA for 18 years.

The focus of Mr. Dingle's teaching career has been on preparing students for standardized tests: AP(R) and SAT(R) tests in the United States, GCSE's and A levels in the United Kingdom, and International Baccalaureate in both countries. He holds a B.Sc. (Hons.) Chemistry and a Postgraduate Certificate in Education, both from the University of Exeter in England.

In addition to writing this Crash Course, Mr. Dingle has written The Periodic Table: Elements With Style, How To Make A Universe With 92 Ingredients, and SAT Chemistry Crash Course. He is the 2011 winner of the School Library Association of the UK's Information Book Award, and, in 2012, was honored with the prestigious literary prize Wissenschaftsbuch des Jahre, sponsored by the Austrian Ministry of Science and Research.

About the Author

Adrian Dingleis an award-winning chemistry educator and author, with more than three decades of experience teaching in the United States and the United Kingdom. He is the creator of the acclaimed chemistry website Adrian Dingle's Chemistry Pages. Now teaching AP Chemistry at the Culver Academies in Culver, Indiana, he taught the same course at the Westminster Schools in Atlanta for 18 years.

The focus of Mr. Dingle's teaching career has been on preparing students for standardized tests; AP and SAT tests in the U.S., GCSE's and A levels in the UK, and International Baccalaureate on both sides of the Atlantic. He holds a B.Sc. (Hons.) in Chemistry and a Postgraduate Certificate in Education, both from the University of Exeter in England.

Mr. Dingle also wrote REA's SAT Chemistry Crash Course. In addition, he is the author of The Periodic Table: Elements With Style, How To Make A Universe With 92 Ingredients (Scholastic, 2011) and Awesome Chemistry Experiments for Kids: 40 Science Projects and Why They Work (Rockridge Press, 2021). He is the 2011 winner of the School Library Association of the UK's Information Book Award, and in 2012 was honored with the prestigious literary prize Wissenschaftsbuch des Jahre, sponsored by the Austrian Ministry of Science and Research.


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