You like flags https://abs.twimg.com/emoji/v2/... draggable="false" alt="🏳️" title="Wehende weiße Flagge" aria-label="Emoji: Wehende weiße Flagge">https://abs.twimg.com/emoji/v2/... draggable="false" alt="🚩" title="Dreieckige Fahne an einem Pfosten" aria-label="Emoji: Dreieckige Fahne an einem Pfosten">? You like chemistryhttps://abs.twimg.com/emoji/v2/... draggable="false" alt="⚗️" title="Destillierkolben" aria-label="Emoji: Destillierkolben">https://abs.twimg.com/emoji/v2/... draggable="false" alt="⚛️" title="Atom-Symbol" aria-label="Emoji: Atom-Symbol">https://abs.twimg.com/emoji/v2/... draggable="false" alt="🧪" title="Test tube" aria-label="Emoji: Test tube"> ?

This thread is for you !

It& #39;s talk about chemistrymorphism and vexillolo-chemistry

https://abs.twimg.com/emoji/v2/... draggable="false" alt="⬇️" title="Pfeil nach unten" aria-label="Emoji: Pfeil nach unten">

#funwithflags #bigbangtheory #funwithflagandchemistry #chemistry #Sheldon #Amy #Quizz

Enjoy & Share !

1/20
"Sheldon Cooper Presents: Fun With Flags" is a fictional YouTube podcast created by Sheldon/Amy, from The Big Bang Theory show.

The ten episodes aimed to teach vexillology, the study of flags, but they were never related to science while both characters are scientists...

2/20
By the way, this molecule in the background is a DNA double helix molecular model made by IndigoInstruments ( @indigodotcom). You can buy it: https://www.indigoinstruments.com/molecular_models/dna-rna/DNA-Double-Helix-Structure-Model-17-Base-Pairs.html">https://www.indigoinstruments.com/molecular...

More information here: https://www.indigoinstruments.com/big-bang-theory-dna-molecular-model.php

https://www.indigoinstruments.com/big-bang-... href="https://twtext.com//hashtag/molecularmodel"> #molecularmodel #chemistry

3/20
By the way, this molecule in the background is a DNA double helix molecular model made by IndigoInstruments ( @indigodotcom). You can buy it: https://www.indigoinstruments.com/molecular... More information here: https://www.indigoinstruments.com/big-bang-... href= #molecularmodel #chemistry 3/20" title="By the way, this molecule in the background is a DNA double helix molecular model made by IndigoInstruments ( @indigodotcom). You can buy it: https://www.indigoinstruments.com/molecular... More information here: https://www.indigoinstruments.com/big-bang-... href="https://twtext.com//hashtag/molecularmodel"> #molecularmodel #chemistry 3/20">
By the way, this molecule in the background is a DNA double helix molecular model made by IndigoInstruments ( @indigodotcom). You can buy it: https://www.indigoinstruments.com/molecular... More information here: https://www.indigoinstruments.com/big-bang-... href= #molecularmodel #chemistry 3/20" title="By the way, this molecule in the background is a DNA double helix molecular model made by IndigoInstruments ( @indigodotcom). You can buy it: https://www.indigoinstruments.com/molecular... More information here: https://www.indigoinstruments.com/big-bang-... href="https://twtext.com//hashtag/molecularmodel"> #molecularmodel #chemistry 3/20">
In chemistry https://abs.twimg.com/emoji/v2/... draggable="false" alt="⚗️" title="Destillierkolben" aria-label="Emoji: Destillierkolben">https://abs.twimg.com/emoji/v2/... draggable="false" alt="🧪" title="Test tube" aria-label="Emoji: Test tube">, three-dimensional (3D) molecular model, where the atoms are represented by spheres whose radii are proportional to the radii of the atoms and whose center-to-center distances are proportional to the distances between the atomic nuclei is used in classeshttps://abs.twimg.com/emoji/v2/... draggable="false" alt="👨‍🏫" title="Man teacher" aria-label="Emoji: Man teacher">

4/20
In chemistry https://abs.twimg.com/emoji/v2/... draggable=https://abs.twimg.com/emoji/v2/... draggable="false" alt="🧪" title="Test tube" aria-label="Emoji: Test tube">, three-dimensional (3D) molecular model, where the atoms are represented by spheres whose radii are proportional to the radii of the atoms and whose center-to-center distances are proportional to the distances between the atomic nuclei is used in classeshttps://abs.twimg.com/emoji/v2/... draggable="false" alt="👨‍🏫" title="Man teacher" aria-label="Emoji: Man teacher">4/20" title="In chemistry https://abs.twimg.com/emoji/v2/... draggable="false" alt="⚗️" title="Destillierkolben" aria-label="Emoji: Destillierkolben">https://abs.twimg.com/emoji/v2/... draggable="false" alt="🧪" title="Test tube" aria-label="Emoji: Test tube">, three-dimensional (3D) molecular model, where the atoms are represented by spheres whose radii are proportional to the radii of the atoms and whose center-to-center distances are proportional to the distances between the atomic nuclei is used in classeshttps://abs.twimg.com/emoji/v2/... draggable="false" alt="👨‍🏫" title="Man teacher" aria-label="Emoji: Man teacher">4/20" class="img-responsive" style="max-width:100%;"/>
Atoms of different chemical elements are usually represented by spheres of different colors.

The scheme is named "CPK molecular model" as it was designed by chemists Robert Corey and Linus Pauling in 1952, and improved by Walter Koltun in 1965.

5/20
In 1952, Corey and Pauling published a description of space-filling models. They represented atoms by faceted hardwood balls, painted in different colors to indicate the respective chemical elements.

White for hydrogen
Black for carbon
Sky blue for nitrogen
Red for oxygen

6/20
In 1965 Koltun patented an improved version:

White for hydrogen
Black for carbon
Blue for nitrogen
Red for oxygen
Deep yellow for sulfur
Purple for phosphorus
Light, medium, medium dark, and dark green for the halogens (F, Cl, Br, I)

7/20
Some imaginative professors have tried to connect objects with molecular models in order to create a recreative environment, such as structural chemical formulas with human forms (called NanoPutians)...

https://pubs.acs.org/doi/10.1021/ed080p395

8/20">https://pubs.acs.org/doi/10.10...
... or racing car shapes !

https://pubs.acs.org/doi/10.1021/nl051915k

9/20">https://pubs.acs.org/doi/10.10...
... or racing car shapes ! https://pubs.acs.org/doi/10.10...
... or racing car shapes ! https://pubs.acs.org/doi/10.10...
In order to relate vexillology with chemistry, and in the following of these chemistrymorphisms, we proposed (with @ChristopheCoud4) to create a quizz game on the recognition of colored atoms https://abs.twimg.com/emoji/v2/... draggable="false" alt="⚛️" title="Atom-Symbol" aria-label="Emoji: Atom-Symbol"> looking like real flags https://abs.twimg.com/emoji/v2/... draggable="false" alt="🏳️" title="Wehende weiße Flagge" aria-label="Emoji: Wehende weiße Flagge">.

https://twitter.com/ChristopheCoud4/status/1319226619580551168

10/20">https://twitter.com/Christoph...
Unfortunately, complex flags are not adaptable with simple molecules (i.e. cross flags https://abs.twimg.com/emoji/v2/... draggable="false" alt="🇺🇸" title="Flagge der Vereinigten Staaten" aria-label="Emoji: Flagge der Vereinigten Staaten"> or flags with a number of band bigger than 4https://abs.twimg.com/emoji/v2/... draggable="false" alt="🇿🇦" title="Flagge von Südafrika" aria-label="Emoji: Flagge von Südafrika">).

An important number of small molecules (NH3, O2 and OH-) could be used... but we will focused here on band flags only.

11/20
Unfortunately, complex flags are not adaptable with simple molecules (i.e. cross flags https://abs.twimg.com/emoji/v2/... draggable= or flags with a number of band bigger than 4https://abs.twimg.com/emoji/v2/... draggable="false" alt="🇿🇦" title="Flagge von Südafrika" aria-label="Emoji: Flagge von Südafrika">). An important number of small molecules (NH3, O2 and OH-) could be used... but we will focused here on band flags only.11/20" title="Unfortunately, complex flags are not adaptable with simple molecules (i.e. cross flags https://abs.twimg.com/emoji/v2/... draggable="false" alt="🇺🇸" title="Flagge der Vereinigten Staaten" aria-label="Emoji: Flagge der Vereinigten Staaten"> or flags with a number of band bigger than 4https://abs.twimg.com/emoji/v2/... draggable="false" alt="🇿🇦" title="Flagge von Südafrika" aria-label="Emoji: Flagge von Südafrika">). An important number of small molecules (NH3, O2 and OH-) could be used... but we will focused here on band flags only.11/20">
Unfortunately, complex flags are not adaptable with simple molecules (i.e. cross flags https://abs.twimg.com/emoji/v2/... draggable= or flags with a number of band bigger than 4https://abs.twimg.com/emoji/v2/... draggable="false" alt="🇿🇦" title="Flagge von Südafrika" aria-label="Emoji: Flagge von Südafrika">). An important number of small molecules (NH3, O2 and OH-) could be used... but we will focused here on band flags only.11/20" title="Unfortunately, complex flags are not adaptable with simple molecules (i.e. cross flags https://abs.twimg.com/emoji/v2/... draggable="false" alt="🇺🇸" title="Flagge der Vereinigten Staaten" aria-label="Emoji: Flagge der Vereinigten Staaten"> or flags with a number of band bigger than 4https://abs.twimg.com/emoji/v2/... draggable="false" alt="🇿🇦" title="Flagge von Südafrika" aria-label="Emoji: Flagge von Südafrika">). An important number of small molecules (NH3, O2 and OH-) could be used... but we will focused here on band flags only.11/20">
Among the 193 sovereign states flags in the world, the most frequent type is the three-colored flag (40% of flags), followed by two- and four-colored flags (20% each).

Source Flag of the World (the website has its own flag https://www.crwflags.com/fotw/flags/ )">https://www.crwflags.com/fotw/flag...

12/20
Red is the most widely used color by percentage/surface area/number of flags. The second color in the ranking is not the same by area and by frequency (blue or white).

The colors originally chosen for the CPK model are very similar to the colors present in the flags.

13/20
If we exclude emblems/arms/cross, we have identified 10 perfect matches between country flags and existing molecules !

From top ; left to right: https://abs.twimg.com/emoji/v2/... draggable="false" alt="🇬🇦" title="Flagge von Gabun" aria-label="Emoji: Flagge von Gabun">https://abs.twimg.com/emoji/v2/... draggable="false" alt="🇵🇱" title="Flagge von Polen" aria-label="Emoji: Flagge von Polen">https://abs.twimg.com/emoji/v2/... draggable="false" alt="🇪🇪" title="Flagge von Estland" aria-label="Emoji: Flagge von Estland">https://abs.twimg.com/emoji/v2/... draggable="false" alt="🇪🇸" title="Flagge von Spanien" aria-label="Emoji: Flagge von Spanien">https://abs.twimg.com/emoji/v2/... draggable="false" alt="🇷🇺" title="Flagge von Russland" aria-label="Emoji: Flagge von Russland">https://abs.twimg.com/emoji/v2/... draggable="false" alt="🇷🇴" title="Flagge von Rumänien" aria-label="Emoji: Flagge von Rumänien">

14/20
If we exclude emblems/arms/cross, we have identified 10 perfect matches between country flags and existing molecules ! From top ; left to right: https://abs.twimg.com/emoji/v2/... draggable=https://abs.twimg.com/emoji/v2/... draggable="false" alt="🇵🇱" title="Flagge von Polen" aria-label="Emoji: Flagge von Polen">https://abs.twimg.com/emoji/v2/... draggable="false" alt="🇪🇪" title="Flagge von Estland" aria-label="Emoji: Flagge von Estland">https://abs.twimg.com/emoji/v2/... draggable="false" alt="🇪🇸" title="Flagge von Spanien" aria-label="Emoji: Flagge von Spanien">https://abs.twimg.com/emoji/v2/... draggable="false" alt="🇷🇺" title="Flagge von Russland" aria-label="Emoji: Flagge von Russland">https://abs.twimg.com/emoji/v2/... draggable="false" alt="🇷🇴" title="Flagge von Rumänien" aria-label="Emoji: Flagge von Rumänien">14/20" title="If we exclude emblems/arms/cross, we have identified 10 perfect matches between country flags and existing molecules ! From top ; left to right: https://abs.twimg.com/emoji/v2/... draggable="false" alt="🇬🇦" title="Flagge von Gabun" aria-label="Emoji: Flagge von Gabun">https://abs.twimg.com/emoji/v2/... draggable="false" alt="🇵🇱" title="Flagge von Polen" aria-label="Emoji: Flagge von Polen">https://abs.twimg.com/emoji/v2/... draggable="false" alt="🇪🇪" title="Flagge von Estland" aria-label="Emoji: Flagge von Estland">https://abs.twimg.com/emoji/v2/... draggable="false" alt="🇪🇸" title="Flagge von Spanien" aria-label="Emoji: Flagge von Spanien">https://abs.twimg.com/emoji/v2/... draggable="false" alt="🇷🇺" title="Flagge von Russland" aria-label="Emoji: Flagge von Russland">https://abs.twimg.com/emoji/v2/... draggable="false" alt="🇷🇴" title="Flagge von Rumänien" aria-label="Emoji: Flagge von Rumänien">14/20" class="img-responsive" style="max-width:100%;"/>
From top ; left to right: Gabon ClNS https://abs.twimg.com/emoji/v2/... draggable="false" alt="🇬🇦" title="Flagge von Gabun" aria-label="Emoji: Flagge von Gabun">Poland OH- https://abs.twimg.com/emoji/v2/... draggable="false" alt="🇵🇱" title="Flagge von Polen" aria-label="Emoji: Flagge von Polen">Estonia HCN https://abs.twimg.com/emoji/v2/... draggable="false" alt="🇪🇪" title="Flagge von Estland" aria-label="Emoji: Flagge von Estland">Spain OSO https://abs.twimg.com/emoji/v2/... draggable="false" alt="🇪🇸" title="Flagge von Spanien" aria-label="Emoji: Flagge von Spanien">Russia HNOhttps://abs.twimg.com/emoji/v2/... draggable="false" alt="🇷🇺" title="Flagge von Russland" aria-label="Emoji: Flagge von Russland">Romania OSN https://abs.twimg.com/emoji/v2/... draggable="false" alt="🇷🇴" title="Flagge von Rumänien" aria-label="Emoji: Flagge von Rumänien">

(Some of them work also fo Monaco, Singapore, Indonesia, Rwanda, Slovakia, Slovenia, Moldavia, Chad or Moldova)

15/20
We also have identified 5 quasi-perfect matches (color https://abs.twimg.com/emoji/v2/... draggable="false" alt="🆗" title="Quadratisches OK" aria-label="Emoji: Quadratisches OK">number of colorhttps://abs.twimg.com/emoji/v2/... draggable="false" alt="🆗" title="Quadratisches OK" aria-label="Emoji: Quadratisches OK"> orderhttps://abs.twimg.com/emoji/v2/... draggable="false" alt="🚫" title=""Betreten verboten!"-Zeichen" aria-label="Emoji: "Betreten verboten!"-Zeichen">)

From top: https://abs.twimg.com/emoji/v2/... draggable="false" alt="🇧🇪" title="Flagge von Belgien" aria-label="Emoji: Flagge von Belgien">https://abs.twimg.com/emoji/v2/... draggable="false" alt="🇧🇬" title="Flagge von Bulgarien" aria-label="Emoji: Flagge von Bulgarien">https://abs.twimg.com/emoji/v2/... draggable="false" alt="🇲🇺" title="Flagge von Mauritius" aria-label="Emoji: Flagge von Mauritius">

16/20
We also have identified 5 quasi-perfect matches (color https://abs.twimg.com/emoji/v2/... draggable=number of colorhttps://abs.twimg.com/emoji/v2/... draggable="false" alt="🆗" title="Quadratisches OK" aria-label="Emoji: Quadratisches OK"> orderhttps://abs.twimg.com/emoji/v2/... draggable="false" alt="🚫" title=""Betreten verboten!"-Zeichen" aria-label="Emoji: "Betreten verboten!"-Zeichen">)From top: https://abs.twimg.com/emoji/v2/... draggable="false" alt="🇧🇪" title="Flagge von Belgien" aria-label="Emoji: Flagge von Belgien">https://abs.twimg.com/emoji/v2/... draggable="false" alt="🇧🇬" title="Flagge von Bulgarien" aria-label="Emoji: Flagge von Bulgarien">https://abs.twimg.com/emoji/v2/... draggable="false" alt="🇲🇺" title="Flagge von Mauritius" aria-label="Emoji: Flagge von Mauritius">16/20" title="We also have identified 5 quasi-perfect matches (color https://abs.twimg.com/emoji/v2/... draggable="false" alt="🆗" title="Quadratisches OK" aria-label="Emoji: Quadratisches OK">number of colorhttps://abs.twimg.com/emoji/v2/... draggable="false" alt="🆗" title="Quadratisches OK" aria-label="Emoji: Quadratisches OK"> orderhttps://abs.twimg.com/emoji/v2/... draggable="false" alt="🚫" title=""Betreten verboten!"-Zeichen" aria-label="Emoji: "Betreten verboten!"-Zeichen">)From top: https://abs.twimg.com/emoji/v2/... draggable="false" alt="🇧🇪" title="Flagge von Belgien" aria-label="Emoji: Flagge von Belgien">https://abs.twimg.com/emoji/v2/... draggable="false" alt="🇧🇬" title="Flagge von Bulgarien" aria-label="Emoji: Flagge von Bulgarien">https://abs.twimg.com/emoji/v2/... draggable="false" alt="🇲🇺" title="Flagge von Mauritius" aria-label="Emoji: Flagge von Mauritius">16/20" class="img-responsive" style="max-width:100%;"/>
From top: Belgium OCS https://abs.twimg.com/emoji/v2/... draggable="false" alt="🇧🇪" title="Flagge von Belgien" aria-label="Emoji: Flagge von Belgien">Bulgaria HClO https://abs.twimg.com/emoji/v2/... draggable="false" alt="🇧🇬" title="Flagge von Bulgarien" aria-label="Emoji: Flagge von Bulgarien">Mauritius ClNOShttps://abs.twimg.com/emoji/v2/... draggable="false" alt="🇲🇺" title="Flagge von Mauritius" aria-label="Emoji: Flagge von Mauritius">.

(It works also for Germany, Italy, Iran, Hungary or Mexico).

17/20
In this approach, former flag of Belarus (1991-1995) is the molecule of water H2O.

18/20
In this approach, former flag of Belarus (1991-1995) is the molecule of water H2O.18/20
In this approach, former flag of Belarus (1991-1995) is the molecule of water H2O.18/20
We also have created fantasy flags for real molecules.

Carbon dioxide (CO2) fantasy country flaghttps://abs.twimg.com/emoji/v2/... draggable="false" alt="🦸‍♂️" title="Man superhero" aria-label="Emoji: Man superhero">https://abs.twimg.com/emoji/v2/... draggable="false" alt="🦹‍♀️" title="Woman supervillain" aria-label="Emoji: Woman supervillain">

19/20
You can found more details, flags, information in our paper (my first paper with @ChristopheCoud4 ) that have just been published in The Journal of Chemical Education https://abs.twimg.com/emoji/v2/... draggable="false" alt="🧑‍🎓" title="Student" aria-label="Emoji: Student">https://abs.twimg.com/emoji/v2/... draggable="false" alt="👩‍🎓" title="Woman student" aria-label="Emoji: Woman student">https://abs.twimg.com/emoji/v2/... draggable="false" alt="👨‍🏫" title="Man teacher" aria-label="Emoji: Man teacher"> https://pubs.acs.org/doi/full/10.1021/acs.jchemed.0c00514

20/20">https://pubs.acs.org/doi/full/... End of thread https://abs.twimg.com/emoji/v2/... draggable="false" alt="⬆️" title="Pfeil nach oben" aria-label="Emoji: Pfeil nach oben">

- a tribute to Dr. Sheldon Cooper -
Fun with Flags and Chemistry

The purpose of this study is to present a learning activity that combines the simultaneous practice of geography and chemistry. It is a game activity based on the identification of national flags and...

https://pubs.acs.org/doi/full/10.1021/acs.jchemed.0c00514
You can follow @ndietrichcom.
Tip: mention @twtextapp on a Twitter thread with the keyword “unroll” to get a link to it.

Latest Threads Unrolled:
There are a lot of misconceptions about the Turkish diaspora in Germany. Since i just finished writing an essay about this topic I thought it's time to give other people
Read more
Las mejores calculadoras online en 2020A thread http://totumat.com/2020/11/26/las-mejores-calculadoras-online-en-2020/ Cuando se estudian asignaturas que requieren de cálculos complicados, nada mejor que contar con una buena calculadora.
Read more
Mitigating #ClimateChange is as much about taking up new techs as about leaving others behindMost studies focus on #coal's global downfall but another #energy tech decline is loomingRead my new
Read more