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Compound Interest | Chemistry infographics @compoundchem.com · 29/09/2026

Wake up and smell the coffee on #NationalCoffeeDay! Here are some of the compounds that give coffee its distinctive aroma: www.compoundchem.com/2015/02/17/c... ☕️ #ChemSky 🧪

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Compound Interest | Chemistry infographics @compoundchem.com · 23/09/2026

It's the autumn equinox in the northern hemisphere 🍂 Here's the chemistry behind the foliage colour changes we'll be seeing over the coming months: www.compoundchem.com/2014/09/11/a... #ChemSky 🧪

Infographic on the chemistry of the colours of autumn leaves. Green is caused by chlorophyll, carotenoids and flavonoids give yellows, and oranges come from carotenoids, which also contribute to reds along with anthocyanins.

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Compound Interest | Chemistry infographics @compoundchem.com · 22/09/2026

Happy Birthday Michael Faraday! 🎉 Faraday was born #OTD (22 Sep) in 1791. He made significant contributions to electrochemistry, including popularising many of the electrochemical terms used today ⚡ wp.me/s4aPLT-faraday #ChemSky 🧪

This graphic titled "Today in Chemistry History" commemorates Michael Faraday's birthday on 22nd September 1791. It features a portrait of Faraday alongside his birth and death dates, noting his work establishing modern electrochemistry, studying electromagnetism, and discovering benzene. Below, it illustrates Faraday's laws of electrolysis with a labeled beaker diagram showing an anode, cathode, and electrolyte. A bottom note states he popularised terms including ion, anode, and cathode.

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Compound Interest | Chemistry infographics @compoundchem.com · 22/09/2026

And yes, the wasabi graphic does look a bit like a green 💩, because I made this at the request of a seven-year-old and an important part of scicomm is knowing your audience

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Compound Interest | Chemistry infographics @compoundchem.com · 21/09/2026

Did you know the wasabi in most sushi restaurants isn't wasabi? Or that a chemical synergy between dried seaweed and raw fish enhances sushi's savoury flavours? Learn more about sushi science with this infographic, as requested by my sushi-mad seven-year-old 🍣 wp.me/s4aPLT-sushi #ChemSky 🧪

This infographic titled "Sushi chemistry: nori, wasabi and sticky rice" explores the science behind sushi. It features three main panels with illustrations, chemical structures, and explanations. The left section explains how amylopectin in rice creates stickiness and how acetic acid from vinegar aids gelatinisation. The middle panel covers umami flavours from glutamate, inosinate, and guanylate found in nori and raw fish, displaying their molecular structures. The right panel discusses allyl isothiocyanate in wasabi and horseradish, along with gingerol and shogaol compounds in pickled ginger (gari). Photos of six different sushi rolls line the bottom.

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C&EN (Chemical & Engineering News) @cenmag.bsky.social · 16/09/2026

The latest edition of #PeriodicGraphics by @compoundchem.com explores the chemistry that makes friction-erasable pen ink appear and disappear: cen.acs.org/physical-che... #chemsky 🧪

Infographic titled “How do friction-erasable pens work?”. The pen ink contains microcapsules with a leuco dye, a weak organic acid color developer, and a long-chain alcohol or ester solvent. At room temperature, the developer donates a proton to the leuco dye, making it colored. Heat above 60 °C generated by friction melts the solvent, detaching the developer and turning the dye colorless. Cooling the writing surface below –10 °C in a freezer restores the ink color.

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Compound Interest | Chemistry infographics @compoundchem.com · 02/09/2026

Wondered why certain caterpillars munch on particular greens in a vegetable patch? 🥬 It's the consequence of a chemical battle between plants and caterpillars, detailed in this edition of #PeriodicGraphics in @cenmag.bsky.social: cen.acs.org/biological-c... #ChemSky 🧪

An infographic titled "Caterpillars vs. plants: A chemical battle"; It details plant defenses—direct toxins like alkaloids, defensive hormones like methyl jasmonate, and protein-digesting enzyme inhibitors—and how caterpillars overcome them. Cabbage whites convert glucosinolates (e.g., sinigrin) into harmless nitriles via digestive enzymes. Monarch caterpillars have mutations that allow them to resist milkweed's cardiac glycosides (e.g., asclepin), storing toxins through pupation to deter predators, similar to cinnabar moths with ragwort alkaloids. Tomato fruitworm moth caterpillars use saliva enzymes to suppress plant toxin production.

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Compound Interest | Chemistry infographics @compoundchem.com · 01/09/2026

This week is the start of a new school year here in the UK. So I've updated my mapping document, linking over 120 infographics to curriculum topics! View and download here: wp.me/p4aPLT-8Ty #ITeachChem #ChatChemistry

Promo image showing several Compound Interest infographics with the subtitle "Compound Interest infographics topic mapping"

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Dr Kat Day (she/her) 🌖 @chronicleflask.katday.com · 26/08/2026

Hello, #ChemSky, chemist needed! @compoundchem.com

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C&EN (Chemical & Engineering News) @cenmag.bsky.social · 12/08/2026

The latest edition of #PeriodicGraphics by @compoundchem.com takes a look at how plants defend themselves from caterpillars —and how some caterpillars fight back: cen.acs.org/biological-c... #chemsky 🧪

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Compound Interest | Chemistry infographics @compoundchem.com · 03/08/2026

It’s #NationalWatermelonDay 🍉 Here’s a look at the compounds behind watermelon colour and aroma, as well as the chemical cause of exploding watermelons in China in 2011: www.compoundchem.com/2015/06/09/w... #ChemSky 🧪

Infographic titled "Watermelon colour, aroma, and explosions" by Compound Interest. Red flesh color comes from lycopene. Aroma stems from fatty acid oxidation producing C6 and C9 aldehydes: (Z,Z)-3,6-nonadienal (watermelon odor) and (Z)-3-hexenal (grass odor). Exploding watermelons in Eastern China in 2011 were caused by overuse of the growth regulator forchlorfenuron during wet weather, which accelerates cell division and growth.

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Compound Interest | Chemistry infographics @compoundchem.com · 28/07/2026

Wildfires are currently raging in several countries. This edition of #PeriodicGraphics in @cenmag.bsky.social looks at how chemistry helps fight them 🔥 cen.acs.org/environment/...

Infographic on suppressing wildfires with chemistry. The graphic looks at Phos-chek, a fire retardant which contains ammonium phosphates or sulfates as the active ingredient. The red colour comes from iron(III) oxide. While Phos-Chek only causes mild skin and eye irritation for humans, it’s hazardous to aquatic organisms. When applied in front of wildfires, Phos-Chek forms phosphate esters which form a protective char that slows wildfires’ spread.

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C&EN (Chemical & Engineering News) @cenmag.bsky.social · 26/07/2026

This edition of #PeriodicGraphics describes how piezoelectric materials generate electricity, and how this process is used in common applications, including gas ignitors and medical imaging equipment. cen.acs.org/materials/el... #chemsky 🧪

A graphic that describes how piezoelectric materials generate electricity, and how this process is used in common applications, including gas ignitors and medical imaging equipment.

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Compound Interest | Chemistry infographics @compoundchem.com · 21/07/2026

It genuinely is common usage here in a sports context.

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Compound Interest | Chemistry infographics @compoundchem.com · 21/07/2026

This is a really odd thing to pick an argument over.

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Compound Interest | Chemistry infographics @compoundchem.com · 21/07/2026

This is a UK/US difference. In UK football speak we refer to the teams as a collective rather than singular.

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Compound Interest | Chemistry infographics @compoundchem.com · 20/07/2026

Spain are the winners of the 2026 World Cup 🏆 Here's a look at how the materials that make up the shirts help them stand up to all the shirt-pulling and rough-housing in a typical Argentina match ⚽ #ChemSky 🧪

Infographic titled "The chemistry of football shirt materials" by Compound Interest features two jerseys alongside polymer structures. Polyester (Polyethylene terephthalate) forms durable, lightweight, water-wicking shirt fabric absorbing just 0.4% water. Elastane (spandex or lycra) adds elasticity and strength, enduring 600% elongation before rupturing, though it is less breathable. Polyurethane is thermally bonded to print player names, numbers, and sponsor logos onto the shirts.

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C&EN (Chemical & Engineering News) @cenmag.bsky.social · 17/07/2026

The latest edition of #PeriodicGraphics by @compoundchem.com explains the chemistry that can cause sunscreen to stain clothing and how some chemistry know-how can quickly remove the stains: cen.acs.org/materials/co... #chemsky 🧪

A graphic explaining the chemistry that can cause sunscreen to stain clothing. The left column shows the structures of the organic compounds that cause stains. The right column shows the structures and chemical reactions involved in removing stains.

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Compound Interest | Chemistry infographics @compoundchem.com · 16/07/2026

On #NationalCherryDay, here’s a look at the chemistry behind cherries’ poisonous pits and the chemical differences between sweet and sour cherries 🍒 www.compoundchem.com/2016/07/21/c... #ChemSky 🧪

This Compound Interest infographic explains the chemistry behind sweet and sour cherries. Anthocyanins like cyanidin-3-o-rutinoside and cyanidin-3-glucosylrutinoside determine cherry color. Tartness results from malic acid, with sour cherries having a lower pH of 3.1–3.6 compared to 3.7–4.5 for sweet cherries. Furthermore, cherry pits contain amygdalin, which releases poisonous hydrogen cyanide when digested, with concentrations varying between cherry types.

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Alan Rew @alanrew.bsky.social · 11/07/2026

@compoundchem.com #chemistry Harry Kane molecules.

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Compound Interest | Chemistry infographics @compoundchem.com · 13/07/2026

If you've been enjoying the tennis at Wimbledon over the past two weeks, here's a look at the materials science that goes into every game, set and match 🎾 www.compoundchem.com/2026/07/13/t... #ChemSky 🧪

An infographic titled "The materials science of tennis" by Compound Interest explaining the chemistry of balls and rackets. Ball cores are vulcanized rubber (natural rubber crosslinked with sulfur) filled with pressurized nitrogen gas. The outer felt is wool and nylon, dyed yellow with a dye such as Basic Yellow 40. Rackets evolved from wood (which warped), to aluminium, then composites (fibreglass, Kevlar), and now carbon fibre with plastic resins. Strings transitioned from cow gut to polyester and nylon.

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Compound Interest | Chemistry infographics @compoundchem.com · 10/07/2026

The men’s football World Cup has reached the quarter finals stage ⚽️ Wondering what the trophy the eventual winners lift is made of? This edition of #PeriodicGraphics in @cenmag.bsky.social takes a look! cen.acs.org/materials/in... #ChemSky 🧪

An infographic titled "What's the World Cup made of?" details two trophies. The Jules Rimet Trophy (1930–1970, stolen 1983) is 35 cm tall, weighs 3.8 kg, and is made of gold-plated silver on a blue lapis lazuli base. The FIFA World Cup Trophy (1974–present) is 36.8 cm tall, weighs 6.175 kg, and consists of hollow 18-karat gold with green malachite bands. If solid, it would weigh 70–80 kg. Winners receive replicas, and Nelson Mandela is the only individual to receive a full-sized replica.

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Compound Interest | Chemistry infographics @compoundchem.com · 30/06/2026

Looks like this one will need an update soon then!

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Compound Interest | Chemistry infographics @compoundchem.com · 29/06/2026

Many of us are relying on the welcome chill of air con during historic heatwaves 🥵 Here's a look at the chemical compounds keeping us cool in @cenmag.bsky.social: cen.acs.org/articles/95/... #ChemSky🧪

Infographic titled "The Chemistry of Air Conditioning" detailing how AC systems work and the evolution of refrigerant compounds. A 4-step diagram shows refrigeration cycles: 1) Compressor pressurizes vapor, 2) Condenser vents warm air, 3) Expansion valve creates a cold mist, and 4) Evaporator cools passing air. Below, it compares "Current Refrigerants" (CFCs, HCFCs, HFCs) with their ozone depletion (ODP) and global warming potentials (GWP), and "The Next Generation" options like HFOs and CO2.

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Compound Interest | Chemistry infographics @compoundchem.com · 13/06/2026

The 2026 World Cup has kicked off! This edition's ball has fewer polyurethane panels than previous World Cup balls. Learn more about the ball's materials chemistry in this graphic: wp.me/p4aPLT-8VK #ChemSky 🧪

Infographic titled "The chemistry of the World Cup ball" by Compound Interest. It details the materials used in manufacturing. Polyurethane coating forms the water-resistant outer panels, synthesized from isocyanate and polyol. A nylon lining (polyamide) adds bounce and strength between the cover and bladder. The inner butyl rubber bladder retains air effectively, though latex is an alternative.

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Lars Fischer @fischblog.bsky.social · 11/06/2026

A great day for chemistry! The first goal of the #worldcup was apparently scored by Quinones. It's about time these amazing compounds get some recognition! Suck it up, Terpenes! #chemsky 🧪

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Compound Interest | Chemistry infographics @compoundchem.com · 08/06/2026

Today is #WorldOceansDay, so here's a graphic which looks at the ocean acidification caused by rising atmospheric carbon dioxide levels and how this affects the ocean habitat 🌊 www.compoundchem.com/2017/01/18/o... #ChemSky 🧪

An infographic titled "Carbon Dioxide and Ocean Acidification" from Compound Interest details how rising carbon dioxide levels lower ocean pH. The first section, "The Basics," shows ocean pH dropping from 8.2 (pre-industrial) to 8.1 (2013) and a projected 7.7 by 2100. "The Chemistry" section uses chemical equations to illustrate CO2 reacting with water to form carbonic acid, which dissociates into hydrogen, bicarbonate, and carbonate ions. "The Effects" outlines risks: decreased shell formation for calcifying organisms, disrupted food webs and fishing economies, and impaired animal chemical signaling.

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Compound Interest | Chemistry infographics @compoundchem.com · 03/06/2026

What gives smoked foods their flavour, and where do these flavour compounds come from? This edition of #PeriodicGraphics in @cenmag.bsky.social has the answers: cen.acs.org/articles/104...

An edition of Periodic Graphics titled "The chemistry of smoking foods" breaks down the chemical processes of food smoking. It contrasts direct smoking in a smokehouse with liquid smoke, noting liquid smoke has lower carbon emissions and fewer carcinogenic polyaromatic hydrocarbons. The graphic explains that wood pyrolysis at 300 to 700 degrees Celsius breaks down cellulose, hemicellulose, and lignin to create flavors. Key flavor compounds include syringol and guaiacol derivatives. Finally, it notes that carbonyl compounds from smoke react with amino acids in food to cause Maillard browning, giving smoked food its characteristic brown color.

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Compound Interest | Chemistry infographics @compoundchem.com · 02/06/2026

Summer thunderstorms are hitting here ⛈️ Whenever you see a flash of lightning, you’re seeing the trigger for atmospheric chemical reactions. Learn more in this graphic: www.compoundchem.com/2018/07/31/t... #ChemSky 🧪

An infographic from Compound Interest titled "The Science of Thunderstorms". The left column explains lightning formation, detailing how colliding ice crystals and falling soft hail separate charges, making the cloud top positive and the base negative, inducing a positive charge on the ground. The center shows a lightning strike photo and explains thunder: rapid heating to 30,000°C creates a shock wave traveling at ~343 m/s. The right column explains how strikes split oxygen to form ozone, excite nitrogen and hydrogen to create a blue-violet color, and bond oxygen with nitrogen to create nitrates that aid plant growth.

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Compound Interest | Chemistry infographics @compoundchem.com · 12/05/2026

Dorothy Hodgkin, Nobel Prize winner and crystallography pioneer, was born #OTD in 1910. Using X-ray crystallography she determined the structures of complex molecules including vitamin B10 and insulin: www.compoundchem.com/2019/05/12/h... #ChemSky 🧪

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Nick Peterson @thetecheng.bsky.social · 15/04/2026

My vote goes to Chlorine Trifluoride to not just atomize you but also burn through the shag carpet, 2 feet of concrete, and another couple of feet of sand before the fire decides to die out.

It is, of course, extremely toxic, but that’s the least of the problem. It is hypergolic with every known fuel, and so rapidly hypergolic that no ignition delay has ever been measured. It is also hypergolic with such things as cloth, wood, and test engineers, not to mention asbestos, sand, and water-with which it reacts explosively. It can be kept in some of the ordinary structural metals-steel, copper, aluminium, etc.-because of the formation of a thin film of insoluble metal fluoride which protects the bulk of the metal, just as the invisible coat of oxide on aluminium keeps it from burning up in the atmosphere. If, however, this coat is melted or scrubbed off, and has no chance to reform, the operator is confronted with the problem of coping with a metal-fluorine fire. For dealing with this situation, I have always recommended a good pair of running shoes.
John Drury Clark, Ignition!: An informal history of liquid rocket propellants

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Compound Interest | Chemistry infographics @compoundchem.com · 20/04/2026

To paraphrase Terry Pratchett, all flowers are edible, some flowers are only edible once 🙂

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Compound Interest | Chemistry infographics @compoundchem.com · 20/04/2026

There’s definitely variation between the different types. The grandiflora variety is better than the soulangeana, for instance (we have the latter in our garden, a friend has the former)

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Compound Interest | Chemistry infographics @compoundchem.com · 20/04/2026

Yes they do, we’ve done both of those recently as well! The pickled magnolia works great with ramen.

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Compound Interest | Chemistry infographics @compoundchem.com · 20/04/2026

Did you know magnolia petals are edible? I didn't until this year, and discovering that they are led me to this exploration of magnolia chemistry (and experiments in making magnolia gin). Learn more in the graphic here: www.compoundchem.com/2026/04/20/m... #ChemSky 🧪

An infographic titled "Magnolia molecules: perfume and medicines" details the plant's chemistry. Pink petals contain cyanidin and peonidin pigments. Aroma molecules include aldehydes like 2-nonenal and heptanal, and terpenes like alpha-pinene and linalool. Medicinal bark compounds include magnolol and honokiol, which have antioxidant properties. It also highlights yulanosides, unique phenylethanoid glycosides. Chemical structures for these compounds surround a central magnolia branch photo.

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Compound Interest | Chemistry infographics @compoundchem.com · 15/04/2026

I confess I fully expected that title to get changed during editing because of the obvious retort, but here we are!

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Compound Interest | Chemistry infographics @compoundchem.com · 15/04/2026

Researchers working on Metal-Organic Frameworks (MOFs) won the 2025 Nobel Prize in Chemistry. The latest edition of #PeriodicGraphics in @cenmag.bsky.social looks at applications of MOFs, including water harvesting, gas storage, and more: cen.acs.org/materials/me... #ChemSky 🧪

This infographic, "MOFs: What are they good for?", defines Metal-Organic Frameworks as crystalline "molecular sponges" made of metal ions and organic linkers. It details four commercial applications: carbon capture using zinc-based CALF-20, safer gas storage for semiconductor manufacturing, harvesting atmospheric water in deserts using aluminum-based MOF-303, and the detoxification of chemical warfare agents. It notes that MOF research won the 2025 Nobel Prize in Chemistry.

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Compound Interest | Chemistry infographics @compoundchem.com · 14/04/2026

On #NationalGardeningDay, here's a look at the chemistry behind why planting the tulips which are blooming at the moment might be hard on your hands: www.compoundchem.com/2018/04/25/t... 🌷 #ChemSky 🧪

An infographic titled 'The chemistry of tulips and tulip fingers' explains allergic contact dermatitis from tulips. It defines 'tulip fingers' as redness, eczema, or pustules from handling bulbs or flowers. Two chemical structures are presented: 6-tuliposide A and its breakdown product tulipalin A, which are identified as the skin-reaction triggers. Tulipalins are also stated to act as a defense against soil fungi. Below the text is a vibrant row of fresh red and yellow tulips with green leaves.

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Compound Interest | Chemistry infographics @compoundchem.com · 02/04/2026

With #Artemis II blasting off to the Moon, here's a look at the different fuels used to get rockets off of the ground in this edition of #PeriodicGraphics in @cenmag.bsky.social: cen.acs.org/physical-che...

This "Fuels for Spacecraft" infographic explains how rockets launch and move through space. The left side covers "Getting Off the Ground," detailing solid propellants like ammonium perchlorate and aluminum powder used in boosters, and liquid propellants like liquid oxygen and hydrogen used in main engines. The right side explores "Propulsion in Space," highlighting chemical propulsion via hydrazine decomposition, electric ion propulsion using xenon, and solar sails.

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Compound Interest | Chemistry infographics @compoundchem.com · 31/03/2026

Robert Bunsen was born #OTD in 1811 🎂 The eponymous Bunsen burner was actually constructed for Bunsen by instrument maker Peter Desaga. The burner was essential to the discovery of caesium and rubidium through their emission spectra. www.compoundchem.com/2023/03/31/b...

"Today in Chemistry History" commemorating Robert Bunsen’s birthday on March 31. It features a portrait of Bunsen (1811–1899) and notes his discovery of caesium and rubidium. A central diagram labels the parts of a Bunsen burner: the blue flame, the barrel, the fuel source (methane), the collar for air adjustment, and the air hole. It explains that a closed collar creates a yellow safety flame, while an open collar produces a hot, blue roaring flame for heating.

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Compound Interest | Chemistry infographics @compoundchem.com · 26/03/2026

On #NationalSpinachDay, this graphic looks at the real story behind spinach’s iron content: www.compoundchem.com/2018/07/17/s... #ChemSky 🧪

An infographic titled "The Chemistry of Spinach" explores iron content, vitamin A, and the "spinach teeth" sensation. It compares spinach to sirloin steak, noting that while spinach has more iron (2.6mg vs 2.5mg per 100g), only 1.7% is absorbed compared to 20% from steak. Low absorption is attributed to polyphenols. It highlights spinach as a source of beta-carotene and explains that "spinach teeth" are caused by oxalic acid reacting with calcium to form insoluble calcium oxalate crystals.

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Compound Interest | Chemistry infographics @compoundchem.com · 23/03/2026

Today is #NationalPuppyDay 🐶 If you’ve ever wondered why wet dogs smell so funky, learn about the biochemistry behind it in this graphic! www.compoundchem.com/2015/07/28/w...

This "Aroma Chemistry" infographic explains why wet dogs smell. It features an image of a terrier and diagrams showing that microorganisms in dog hair produce volatile organic compounds, which water then liberates into the air. The graphic identifies ten specific compounds that increase in concentration when hair is wet, including benzaldehyde (almond-like), p-cresol (faecal), and dimethyl trisulfide (sulfurous). Conversely, it notes that hexanal and heptanal concentrations decrease when wet.

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Compound Interest | Chemistry infographics @compoundchem.com · 20/03/2026

Spring is here in the northern hemisphere! Here's a graphic from the #PeriodicGraphic archives in @cenmag.bsky.social looking at the pigments that give daffodils their golden glow: cen.acs.org/articles/93/... #ChemSky 🧪

An infographic titled "The Chemistry of Daffodils" by Compound Interest for C&EN explains the flower's biological makeup. It features a bouquet of yellow daffodils and three main sections. The Aroma section highlights (E)-beta-ocimene for its woody scent, plus 1,4-dimethoxybenzene and (E,E)-alpha-farnesene. The Color section identifies carotenoids like zeaxanthin and beta-carotene. The Poison & Medicine section shows the toxic alkaloid lycorine and galantamine, used to treat Alzheimer's.

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Compound Interest | Chemistry infographics @compoundchem.com · 18/03/2026

How are plastics recycled and how do the recycling rates of different plastics compare? This 2012 edition of #PeriodicGraphics in @cenmag.bsky.social takes a look: cen.acs.org/environment/...

Infographic on how plastic is recycled. The graphic shows the mass of different plastic types produced in kilograms and the percentage of this mass that is recycled according to the US EPA. It also illustrates how plastics are sorted by type with a variety of techniques before washing, separation from contaminants, then drying and pelletisation.

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C&EN (Chemical & Engineering News) @cenmag.bsky.social · 18/03/2026

Researchers investigating metal-organic frameworks (MOFs) won the 2025 Nobel Prize in Chemistry. The latest edition of #PeriodicGraphics by @compoundchem.com takes a look at four promising applications of MOFs: cen.acs.org/materials/me... #chemsky 🧪

A graphic that describes the structure, composition, and application of crystalline materials called metal-organic frameworks or MOFs.

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