Atoms, elements, molecules… What’s the difference? This is part 3 in the Stated Clearly series: An Introduction to Chemistry. In it you will find a simplified definition of a molecule, you will learn how we model molecules, and you will see actual images of real molecules and their vibrational modes!
You can play the Bond Breaker game at https://testtubegames.com/bondbreaker…
You can support this channel at / statedclearly
MORE ON OUR DEFINITION OF A MOLECULE
In this video we describe a molecule as “a group of atoms stuck together, usually through chemical bonds”
This definition is great because it’s so easy to make sense of, but there are some problems with it. Biologists will sometimes consider a double stranded chain of DNA to be a “single molecule”, even though each half of the strand is bound to the other via non-chemical hydrogen bonds. The same is true for some protein complexes composed of multiple sub-units.
Alternatively, some crystals (such as quartz) are made of repeating patterns of atoms all chemically bound. Using our definition, you’d have to consider an entire quartz crystal to be a “single molecule”. Chemists don’t usually do this, instead they consider each repeating sub-unit to be a molecule. Pure metals have a similar issue.
Language is a living, evolving mess! Even in formal scientific fields where you might expect more consistency.
MORE ON HYDROGEN MOLECULE FORMATION
In this animation we show a hydrogen molecule forming in space via a collision of just two atoms. Normally, this reaction also requires some sort of dust or ice particle to trap atoms as they bind together.
To avoid distraction when teaching the basic concept of a molecule, we chose to ignore this technicality in the animation. You can read here about how hydrogen molecules normally form in space: https://www.sciencedirect.com/science…
PAPERS DISCUSSED IN THIS ANIMATION
Here is the molecular image by Leo Gross at IBM in 2009: https://www.researchgate.net/publicat…
Here is the paper on molecular vibrations by Joonhee Lee in 2019: https://www.nature.com/articles/s4158…
Let’s explode some Shakespeare myths! And “zounds”: The first 500 people to use my link will get a 1 month free trial of Skillshare: https://skl.sh/robwords11241
William Shakespeare is arguably the most significant cultural figure of all time. But has his contribution to the English language been overstated? Let’s find out:
🧐 Did Shakespeare really “invent” 1,700 words?
🎭 Which common phrases did Shakespeare give us?
📚 Is there any truth in claims Shakespeare didn’t write his plays?
These question answered and many more in this myth-busting episode of RobWords.
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Concept, Illustrations and animations : Federico Babina Music composition : Cesc Miralta
13 portraits of metropolis where I grasp elements and details I relate them, recreate them, synthesize them and shape them into a personal form to return a small snapshot that tries to photograph a tile of this varied mosaic. Spatially complex paintings , similar to a collage, depicting a bold and metropolitan space made of streets, symbols, buildings and empty spaces. An articulated and intricate plot that seeks graphic balance. An illustrated exercise that tries to transform the chaos of everyday life into a structured but spontaneous order. A portrayal of the wonder and joy that can come from the color and spatial relationships of the scenographies that envelop us, embrace us, and host us in everyday life.
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What’s up with them? Who put them there? What do they want?
Camera: @henryhopkin
Thanks to John Frankland at the South Woodham Ferrers Local History Society
https://southwoodhamhistory.org/
And thanks to the Sainsbury Archive, who were extremely helpful even though it turns out Sainsbury’s bucked the trend and avoided clock towers entirely.
https://www.sainsburyarchive.org.uk/
Sources:
Kirby, Audrey. (2008). The Architectural Design of UK Supermarkets: 1950 – 2006. [PhD Thesis]. Available at: https://ualresearchonline.arts.ac.uk/…
Morrison, Kathryn. (2007). English Shops and Shopping: An Architectural History. New Haven, Conn. ; London: Yale University Press.
Wright, Lance. (1973). Shopping the Environment. Architectural Review, (March 1973).
ITV Cymru – Carrefour – Wales’ first Hypermarket 1972
• Carrefour – Wales’ first Hypermarket …
“High St.” Under Cover (1964) licenced from British Pathé
https://www.britishpathe.com/asset/87…
South Woodham Ferrers Advert
• South Woodham Ferrers Advert (VA 3/8/…
Historic England blog
https://heritagecalling.com/2023/01/1…
Hall of the Mountain King by Kevin MacLeod is licensed under a Creative Commons Attribution 4.0 licence. https://creativecommons.org/licenses/…
Source: http://incompetech.com/music/royalty-…
Artist: http://incompetech.com/
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