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ChemSurvival
Registrace 9. 06. 2012
Professor Davis has converted many of his most popular lecture animations into a series of videos designed to help students digest the complex subject of chemistry in bite-sized pieces.
IUPAC Nomenclature of Branched Alkanes - a Professor Explains Why (and How) We Use It!
Professor Davis explains why IUPAC nomenclature is a critical skill for organic chemists to master, and explains a few simple examples of how to apply it to branched, saturated hydrocarbons.
Explore the IUPAC Blue Book here:
iupac.qmul.ac.uk/BlueBook/PDF/
Explore the IUPAC Blue Book here:
iupac.qmul.ac.uk/BlueBook/PDF/
zhlédnutí: 549
Video
Brief Introduction to the Chemistry of Soap: saponification, soap and micelles explained
zhlédnutí 592Před 11 měsíci
Professor Davis explains the chemistry of soap making, and how soap is able to solubilize dirt by forming micelles
A Chemist Asked AI to Turn Elements Into People... and this happened!
zhlédnutí 499Před 11 měsíci
Forget plutonium, uranium and the other elements of the day. Let professor Davis explain the first three rows of the table as though they were people!
How Does Biting a Gold Object Prove the Theory of Relativity?! Hardness of gold medals and coins.
zhlédnutí 429Před 11 měsíci
Professor Davis explains how biting a gold medal helps to prove the theory of relativity. Biting gold www.persee.fr/doc/numi_0484-8942_2018_num_6_175_3433
The Most Devastating Nuclear Weapon Ever Conceived? A chemist explains "salted" nuclear weapons.
zhlédnutí 2,2KPřed 11 měsíci
Professor Davis explains the science behind so-called "salted" nuclear weapons. In 1950 Leo Szilard suggested that such a nuclear device might be capable of ending all human life on Earth, using nuclear fallout as a weapon. Link to the roundtable discussion transcript library.ucsd.edu/dc/object/bb54282079/_1.pdf
How Do Fireworks Get Their Colors? It's all about atomic structure!
zhlédnutí 858Před rokem
Professor Davis explains how atomic spectra create the beautiful colors we see in the sky every 4th of July. Explore line emission spectra at the featured website atomic-specta.net Atomic orbitals Wikimedia Creative Commons - attribution: haade, CC BY-SA 3.0 creativecommons.org/licenses/by-sa/3.0/, via Wikimedia Commons commons.wikimedia.org/wiki/File:Single_electron_orbitals.jpg Lithium ion fl...
Could Neptunium Be Used to Make a Nuclear Weapon? The periodic table seems to suggest it could!
zhlédnutí 1,6KPřed rokem
Professor Davis explains why neptunium could be used in much the same way as uranium or plutonium to make a nuke, and also why it probably hasn't just yet. More on nukes from Professor Davis czcams.com/video/HuWvxc7qVvs/video.html More on nuclear radiation from Professor Davis czcams.com/video/P0j0YitWOPU/video.html czcams.com/video/c9WfZJYUWv0/video.html 1996 ISIS report (chapter 5) isis-onlin...
Transition metals and the d-block of the periodic table - what's the difference? - Part 2
zhlédnutí 291Před rokem
Professor Davis discusses the common misconception that d-block elements are all transition metals. View Part 1 czcams.com/video/pZa5Kixml5Y/video.html Jensen paper pubs.acs.org/doi/10.1021/ed080p952
What are Transition Elements? Transition metals, atomic structure and the periodic table - Part 1
zhlédnutí 825Před rokem
Professor Davis explains where the term "Transition Metal" or "Transition Element" comes from and how it is linked to the evolution of our understanding of atomic structure. Apologies if you hit a paywall. I will look for publicly available links!!! Langmuir's 1919 Paper: pubs.acs.org/doi/pdf/10.1021/ja02227a002 Bury's 1921 Paper: pubs.acs.org/doi/pdf/10.1021/ja01440a023
Is the Periodic Table Broken?! Which elements really belong beneath scandium and yttrium?
zhlédnutí 443Před rokem
Professor Davis explains the group 3 debate and why we may never agree on which elements belong below scandium and yttrium on the periodic table. See more on periodic table debates on the channel czcams.com/video/TGMCKy0Gihw/video.html
Do Nukes Expire? The benefits and drawbacks of tritium boosting with Professor Davis
zhlédnutí 1,3KPřed rokem
Professor Davis discusses the radiological properties of tritium and how it can accelerate or quench a nuclear reaction. NuDat 3.0 Website www.nndc.bnl.gov/nudat3/ More on beta radiation czcams.com/video/P0j0YitWOPU/video.html czcams.com/video/c9WfZJYUWv0/video.html
What the heck is the "Lanthanide Contraction"? Professor Davis Explains
zhlédnutí 4,5KPřed rokem
Professor Davis explains why atoms and ions from lanthanum through lutetium tend to decrease in radius as we move across the group: a phenomenon known as the "Lanthanide Contraction"
What the Heck Happened to Professor Davis?!
zhlédnutí 744Před rokem
What the Heck Happened to Professor Davis?!
Cyclodecapentaene is NOT aromatic (HERE'S WHY!)
zhlédnutí 3,2KPřed 2 lety
Cyclodecapentaene is NOT aromatic (HERE'S WHY!)
Where Magic Meets Physics (and the Periodic Table Benefits!) - Maria Goeppert Mayer's Story
zhlédnutí 2KPřed 2 lety
Where Magic Meets Physics (and the Periodic Table Benefits!) - Maria Goeppert Mayer's Story
Who Was The First Scientist EVER to Describe Nuclear Fission? The Contributions of Ida Noddack.
zhlédnutí 449Před 2 lety
Who Was The First Scientist EVER to Describe Nuclear Fission? The Contributions of Ida Noddack.
The Grandmother of the Nuclear Bomb? How Oppenheimer's nuclear fission was discovered.
zhlédnutí 880Před 2 lety
The Grandmother of the Nuclear Bomb? How Oppenheimer's nuclear fission was discovered.
Measuring radioactivity without a Geiger counter... how did Marie Curie do it?
zhlédnutí 4,2KPřed 2 lety
Measuring radioactivity without a Geiger counter... how did Marie Curie do it?
The First Female Chemist in History? Marie-Anne Paulze (Lavoisier)
zhlédnutí 2KPřed 2 lety
The First Female Chemist in History? Marie-Anne Paulze (Lavoisier)
Where does hydrogen ACTUALLY belong on the periodic table? (the answer may surprise you!)
zhlédnutí 2,1KPřed 2 lety
Where does hydrogen ACTUALLY belong on the periodic table? (the answer may surprise you!)
Is there a "Row Zero" on the Periodic Table? A Chemist Explains.
zhlédnutí 2,3KPřed 2 lety
Is there a "Row Zero" on the Periodic Table? A Chemist Explains.
Is there an 'element zero'? Mendeleev thought so! (spoiler alert: he was wrong!)
zhlédnutí 1,5KPřed 2 lety
Is there an 'element zero'? Mendeleev thought so! (spoiler alert: he was wrong!)
The Only Element Named for a Female Scientist (It's not the one you think!)
zhlédnutí 1,6KPřed 2 lety
The Only Element Named for a Female Scientist (It's not the one you think!)
Is Technetium a Naturally Occurring Element?
zhlédnutí 2,6KPřed 2 lety
Is Technetium a Naturally Occurring Element?
Could Polonium-204 Be Used as a Radiological Poison?
zhlédnutí 3,1KPřed 2 lety
Could Polonium-204 Be Used as a Radiological Poison?
What is Ivermectin and how does it kill parasites? A Chemist Explains.
zhlédnutí 136KPřed 2 lety
What is Ivermectin and how does it kill parasites? A Chemist Explains.
Tips and Tricks for Easily Determining Hybridization States of Atoms in Chemical Compounds
zhlédnutí 4KPřed 2 lety
Tips and Tricks for Easily Determining Hybridization States of Atoms in Chemical Compounds
How does a nucleus eject an electron during beta radiation? Beta particles and neutrinos explained.
zhlédnutí 6KPřed 2 lety
How does a nucleus eject an electron during beta radiation? Beta particles and neutrinos explained.
Mega Molecules Organic Chemistry Model Kit (2nd ed) REVIEW with Professor Davis
zhlédnutí 1,6KPřed 2 lety
Mega Molecules Organic Chemistry Model Kit (2nd ed) REVIEW with Professor Davis
Restricted rotation (allyl groups) and their effect on 1H-NMR multiplets
zhlédnutí 1,8KPřed 3 lety
Restricted rotation (allyl groups) and their effect on 1H-NMR multiplets
Good video
Thanks Professor!
I've been taking Ivermectin since 2020 3 times a week, and I am still alive. I also drink and make my own pine needle tea along with mullein tea made from lambs ear plants
Thanks!
glad you liked the video! it was one of my first "fun chemistry" vids. Please check out the rest of the channel.
thanks Prof Davis. u are a great animator Please dont stop making great videos like this
Nice
Thanks 😎
This has nothing to do with the physics of effusion. Effusion is the molecular movement of gas through a porous media or through tiny openings of the order of the mean free path of the molecules. This demonstration with balloons is caused by gas escaping through a large opening similar to a nozzle on a rocket motor. Thermodynamics tells us that the exhaust rate of a gas through a nozzle (i.e., the opening on the balloon in this case) at a constant temperature will be inversely proportional to the square root of its relative molar mass. You remember that helium has a relative molar mass of about 4, and air has a relative molecular mass of about 28. Therefore, helium will exhaust approximately 2.65 times faster than air because of its lower relative molecular mass. Yes, it is the same result, but it is due to the wrong physical reasoning. This demonstration has nothing to do with Graham's law of effusion.
this is short version of my previous comment regarding khan Academy comment: During beta-minus decay, a down quark changes into an up quark, turning the neutron into a proton. (The opposite happens in beta-plus decay.) This process is a result of the weak force. The weak force is mediated by particles called bosons. A down quark changes into an up quark through the emission of a weak boson. That boson then decays into an electron and an antineutrino, which are emitted from the nucleus. A similar process occurs during beta-plus decay.
This was a comment explaining it on Khan Academy: A neutron is not composed of a proton and an electron. Similarly, a proton is not composed of a neutron and a positron. Neutrons and protons are composed of particles called quarks, which come in different flavors. A neutron is made of one up quark and two down quarks. A proton is made of two up quarks and one down quark. During beta-minus decay, a down quark changes into an up quark, turning the neutron into a proton. (The opposite happens in beta-plus decay.) This process is a result of the weak force. The weak force is mediated by particles called bosons. A down quark changes into an up quark through the emission of a weak boson. That boson then decays into an electron and an antineutrino, which are emitted from the nucleus. A similar process occurs during beta-plus decay. As for the mass difference, this is related to energy. The higher energy state a system is in, the more massive it is. For example, a free neutron is unstable. It beta-minus decays into a proton (a H-1 nucleus). Energy is released during the decay. If you were to compare the mass of the parent neutron to the combined mass of the daughter proton, the beta particle, and the antineutrino, there would be a small difference in the mass. That difference in mass corresponds to the energy released during the decay by E=mc^2. The free proton is stable, so it does not decay back into a neutron by beta-plus decay. However, some nuclei contain a certain number of protons and neutrons bound together that would be more stable if a proton became neutron. Those are the cases when beta-plus decay occurs. Again, there is a small decrease in mass from the parent nucleus to the decay products corresponding to the energy released.
numero uno, bravo continua cosi diahane
Ivermectin in pill or the paste and where do I get it from?
It kills from inside😭😭😭
?rrppe😊p
Your voice is so lovely
It won the nobel prize for its poteniality to cure 2 of the worst deforming parasite infections. There’s been peer reviewed research on it for over a decade. How the media cancelled it as horse medicine is hilarious. Ignorance is the real virus.
It seems to me that ivermectin can do a lot for a lot of different illnesses but big Parma will discredit it because they can't make the money of it as the can on the other crap they want feed all of us
Used it propylactically, 0.2 mg per kg at the beginning of the C word epidemic. I followed Dr. Paul Marik’s protocol. I am an old guy with multiple lung issues.when I did get the C word, it didn’t last 48 hrs. My physician thought I was going to die. Also tried it on my chondrites=dermatitis nodularis is helisis. After 15 years of pain, multiple attempts at freezing it off to no avail, Ivermectin got rid of it in about a month. Used the liquid form twice a day.. Bought the liquid form at a tack shop. 10 bucks.
I guess COVID was a parasite… which makes perfect sense given it was a “designer” bioweapon.
Simple but excellent explanation.Thank You so much😊
Badiya hai mere pass😊
Come on people the bible tells us whats great for parasites , worms ? Scabie mites ? Its called brimston SULFER you can purchase as soap and ointments ? Got shut of scabies outbreal last year ! You talk about itchy skin so used ivermectin BUT washed with sulfer soap gone completely after few weeks brimstone without the fire LOL x
We are really all walking chemistry sets x
And ... For the record fusion is clearly where it's at 🎉
true 😎 , but without a fission stage, the fusion reaction would be a no-go!
This one needs a lobotomy
Love should be the answer
Beautiful graphics!
Cool stuff
At 8:30 we see in the database that 99.33 % of decays are "epsilon" which is then explained to be "high-energy positrons", i.e. a beta+ decay. However, epsilon implies a mix of electron capture and beta+ and the database used in the video informs us that the branching ratio is 0.0013 % for beta-plus and the vast majority is EC (www.nndc.bnl.gov/nudat3/DecayRadiationServlet?nuc=204Po&unc=NDS). Now, in EC no positrons are released from the nucleus, instead the nucleus captures an inner shell electron and emits only a neutrino, so no positrons. Or am I misinterpreting something?
How about "green fairy"? 70% methanol and it's all natural
Thanks, I wish someone had explained this to me in high school smh
thank you!! this was confusing me so much but you explained it so simply ❤
Glad it helped... that's why I make the videos B-)
Thank you so much💛
Glad you liked the video!
Are you my teacher
How much do you take?
Africa uses ivermectin ....very few covid deaths in Africa
Excellent explanation. thanks
Gun type bombs are not made today. They are too wasteful of U235. U235 is used in implosion bombs. U235 is less radioactive than Pu239. They have also tested bomb cores of both U235 and Pu239.
nitaigaur
XieXie pengyou (sorry... don't know how to do intonations on a cell phone!)
Hadir tanda support
Is this man saying ivermectin is not good for humans? It is used all the time for years in humans.
I've been losing muscle because of parasites. will taking Ivermectin help??
Yes. Ask doctors
@@coder-fullstack I did. they are clueless
Someone has NOT DONE THEIR RESEARCH. Ivermectin was developed to heal for river blindness IN HUMANS. AND the people who developed ivermectin won a novel peace prize. PEOPLE have been taking this for 40 YEARS !! So why are you saying it's just for animals ????? Ivermectin works for animals AND humans, equally as well. Some countries have their people take ivermectin twice a year because of the large problem with parasites. This is a good drug that works, for people and animals.
Should i....err i mean my dog, take it with or wothout food?
very well explained Sir
Daveeee
How can we calculate the height for any 2 such products?
I don’t usually find this for most educational videos, but your explanation is so clear. Everything makes perfect sense. Thank you!
Thanks for the kind words. I'm so glad you liked the presentation!
Omg thank you so much😭🙏
huh??? if they separate when cold, why not just chill the mixture and use a sep. funnel??
thank you mannn
My pleasure. Glad you liked the video.