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Paula Rossi @elementalmusings.bsky.social · 4h

There are many occasions of symmetry in the cosmos. This post reveals the fundamental relationship that shapes the atom, and through it, the material universe.
#chemistry #chemsky #protons #electrons

Perfect Complements

Protons and electrons: Like peanut butter and jelly, a match made in heaven.

mapofthechemicalworld.substack.com

Paula Rossi @elementalmusings.bsky.social · 7d

Did you know...
That the legendary physicist, Ernest Rutherford, is considered by some to be the first successful alchemist? Or that Glenn Seaborg, a pioneer in the realm of atom smashing, was the first to make gold via nuclear transmutation?
#alchemy #chemsky #chemistry #isotopes
For more, see

Alchemy?!

From medieval myth to modern reality

substack.com

Paula Rossi @elementalmusings.bsky.social · 8d

Good for you!

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Paula Rossi @elementalmusings.bsky.social · 14d

I read the book first. I agree... for that movie, the order doesn't matter. The movie omits the Rover roll-over, but not too much else. And the movie is long even with that omission.

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Paula Rossi @elementalmusings.bsky.social · 14d

That is a fun book and equally fun movie!

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Paula Rossi @elementalmusings.bsky.social · 14d

For a brief taste of how isotopes have distinguished themselves in chemistry, medicine and archeology see:

Who cares about isotopes?

We do! Like it or not, isotopes have wormed their way into the fabric of our lives.

mapofthechemicalworld.substack.com

Paula Rossi @elementalmusings.bsky.social · 14d

Stable isotopes don’t always get the glory they deserve. They are often greeted with a heavy sigh in intro chem courses. But did you know that they can tell us what ancient hominins ate? #chemsky #chemistry #isotopes 🧪

How stable isotope analysis reveals what ancient humans and Neanderthals ate

Analytical chemistry can tell us what our ancestors ate thousands - or even millions - of years ago. Rachel Brazil gets her teeth into the evidence

www.chemistryworld.com

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Paula Rossi @elementalmusings.bsky.social · 20d

Do you know that there are currently over 3,500 isotopic varieties of the 118 elements known to man? How can we possibly symbolize a specific one?
#chemsky #chemistry #isotopes

There's nothing like a good logo

Can we create suitable ones for each and every isotope?

open.substack.com

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Paula Rossi @elementalmusings.bsky.social · 23d

Nothing personal. Where would we be without physicians? Originally was 'physician who merely dabbled in chemistry' but had to stay under word limit.

Paula Rossi @elementalmusings.bsky.social · 23d

Didn’t we all wonder about this at some point in chem lab? Nice to see it verified.

Paula Rossi @elementalmusings.bsky.social · 24d

Good one!

Paula Rossi @elementalmusings.bsky.social · 24d

Ohio citizens have voted twice to prohibit gerrymandering. The republicans ignore us.

Paula Rossi @elementalmusings.bsky.social · 24d

Try to imagine chemistry without JJ Berzelius, who, after thousands of experiments, published the first precise list of atomic weights (1818). Yet Berzelius might have remained a mere physician had he never met Anders Ekeberg. Teachers can influence the course of history.
🧪 #chemsky #chemistry

8 chemists with disabilities who left their mark on history

Scientists with disabilities ascended to the forefronts of their fields long before labs were accessible and civil rights were codified

cen.acs.org

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Paula Rossi @elementalmusings.bsky.social · 24d

Gold (Au) is labelled ‘observationally' stable. If gold were to suddenly display radioactivity, 'market volatility' might achieve critical mass! 💥😉 #chemsky #chemistry For more see mapofthechemicalworld.substack.com/p/as-for-gol... Written for the chemnovice and chemphobic

As for gold...

Chapter 1, Section 1.8

mapofthechemicalworld.substack.com

Paula Rossi @elementalmusings.bsky.social · Sep 15

EA is defined as the energy RELEASED by adding an electron to an isolated atom. Mathematically, EA = E (neutral)-E(anion). EA is -6.8 kJ/mole for N.
The sign convention is a bear. Because of the word RELEASED, EA is opposite to delta E for anion formation. This can lead to a lot of confusion.

Electron affinity (data page) - Wikipedia

en.wikipedia.org

Paula Rossi @elementalmusings.bsky.social · Sep 15

Brilliant!

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Paula Rossi @elementalmusings.bsky.social · Sep 15

When I was in grad school the professional glassblower was a rock star !

Paula Rossi @elementalmusings.bsky.social · Sep 15

At the University of Cincinnati, in the late 1970s, German or Russian was required for the Chem major. By the time I finished grad school (1981) I believe that requirement had been dropped

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Paula Rossi @elementalmusings.bsky.social · Sep 15

Great to hear that there are jobs available! I started my teaching career at an liberal arts undergraduate institution (Denison University) and it was great fun to build a research program there!

Paula Rossi @elementalmusings.bsky.social · Sep 14

Thank you!!

Paula Rossi @elementalmusings.bsky.social · Sep 14

Willie is a national treasure

Paula Rossi @elementalmusings.bsky.social · Sep 14

I am a PhD electroanalytical chemist. I would love to be added to the science feed! Here is a link to 6 of my publications. If this is insufficient evidence, please let me know! Thank you so much for your efforts. (I post under the name Paula Rossi, although my legal name is Paula Rossi Melaragno

Paula R. Melaragno's research works | Denison University and other places

Paula R. Melaragno's 6 research works with 73 citations, including: Ion Transport and Ferrocene Incorporation in Electroactive Fullerene Films

www.researchgate.net

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Paula Rossi @elementalmusings.bsky.social · Sep 14

#SCIENCE🧪
Tin wins the isotope competition, having more natural isotopes than any other element. Tin has 10. Poetic justice, eh? Sn turns on the melodrama when bent out of shape, moaning and groaning loudly.
mapofthechemicalworld.substack.com/p/ten-for-ti...

tin cry sound - Search VideosVideos

www.bing.com

Paula Rossi @elementalmusings.bsky.social · Sep 13

That’s good news for Chicago but bad news for Memphis.

Paula Rossi @elementalmusings.bsky.social · Sep 11

This gentleman represents the very best of the human spirit. What a lifetime of unselfish work.