This is the Mg/Li electrochemical cell. The Mg/Na cell is on www.youtube.com/watch?v=dYAq.... This method follows the Standard Electrode Potential Table, as it's based on thermodynamics. #chemsky #chemchat #realtimechem #beyondbenign #iTeachChem #Chemistry

Electrolysis of 0.5M CuCl₂ solution powered by light! NOT A BATTERY. See, the electrolysis is so slow that the litmus is actually red before bleaching. LED banks are in parallel, better than the previous tweet on this topic. #chemsky #chemchat #realtimechem #beyondbenign #iTeachChem #Chemistry

Innovative design moves with new technology. The cuvette holder moves from Lego to a 3D-printed one. It uses a coloured LED as the emitter and an IR-LED as the collector. This produces a voltage related to the transmitted light. #chemsky #chemchat #realtimechem #beyondbenign #iTeachChem #Chemistry

See how little solid is used to do this. The main video is on www.youtube.com/watch?v=FWxT.... It only takes a minute, allowing time for drawing mechanisms. Why does it form in the middle? Why does it sparkle? How is it yellow? #chemsky #chemchat #realtimechem #beyondbenign #iTeachChem #Chemistry

Yes it much nicer to use than cabbage. Here is the pH profile. Watch my lockdown project on butterfly pea tea and more. See www.youtube.com/watch?v=tbR5... #chemsky #chemchat #realtimechem #beyondbenign #iTeachChem #Chemistry

@mrbchemnhs.bsky.social · 8mo ago

I was curious to see if Butterfly Pea Flower Tea can show small pH changes and it can! And it smells much better than cabbage!! #ITeachChem #Chemistry #EduSky

Sustainable electrolysis using light instead of wasting the battery. Copper on the cathode #chemsky #chemchat #realtimechem #beyondbenign #iTeachChem #Chemistry

This has a beauty of its own when projected on a screen in a lecture theatre. A diffusing complex forms when Fe(NO₃)₃ and KCNS come together. Look what happens as an Nd magnet comes close. "In a little you can see a lot." #chemsky #chemchat #realtimechem #beyondbenign #iTeachChem #Chemistry

Go to sites.google.com/view/13ismc2.... It's about micro- and small-scale practical activities inspired by the school educators in chemistry around the world. Look at the gallery page! Sign up on the front page. Send a proposal #chemsky #chemchat #realtimechem #beyondbenign #iTeachChem #Chemistry

13ISMC26

Wednesday 8 July to Friday 10 July 2026

sites.google.com

Try these in a 1-1.5 cm diameter droplet of water on a polypropylene surface. Why do this? A short activity leads to a long discussion on ionic lattices, dissolving (solvation), diffusion, precipitation & spectator ions. #chemsky #chemchat #realtimechem #beyondbenign #iTeachChem #Chemistry

Watch the ppt appear. Ca(NO₃)₂ goes in late, as it dissolves quicker. It's better to get the ppt close to the centre. This process occurs in less than a minute. It works for any precipitation, but this is a "green" version. #chemsky #chemchat #realtimechem #beyondbenign #iTeachChem #Chemistry

Here is the video of the glistening crystals of lead iodide. The glistening crystals are formed during formation (as they are so thin) and by the bombardment with surrounding water molecules. #ChatChemistry, #ITeachChem @cleapss.bsky.social #chemistry #greenchemistry @rsc-eic.bsky.social

What a fantastic lead iodide precipitate by diffusion I obtained yesterday. The sparkling changes were beautiful.

We are comparing the diffusion speeds of halogens along damp starch/iodide paper. This activity is conducted in Petri dishes on the bench. The final section shows iodine result and uses 1 tiny ball of iodine. #ChatChemistry, #ITeachChem @cleapss.bsky.social #chemistry #greenchemistry

Confusion abounds as to whether iodine sublimes or evaporates at 1 atm. In fact, it melts and flows. A little microscale triumph. See tinyurl.com/2nw2hram #ChatChemistry, #ITeachChem @cleapss.bsky.social @rsc-educomscot.bsky.social @sfed-rsc.bsky.social @beyondbenign.bsky.social

You can watch this method of filtering on youtu.be/6rSu-blfRZo. This is separating activated carbon from an aqueous suspension. Carbon was used to remove a dye.

Atmospheric chemistry is difficult for schools, but microscale techniques can help with evidence for ozone and hydroxyl radicals. Here are the videos referred to in the picture. youtu.be/mlQRDuKm63w  www.youtube.com/watch?v=U_PA... www.youtube.com/watch?v=9jNh... #ITeachchem

Here is a diffusing precipitate of silver iodide on a thermochromic plastic sheet so that the endothermic dissolving and the exothermic precipitation are seen. #ITeachchem #RealTimeChem #chatchemistry @sfed-rsc.bsky.social @beyondbenign.bsky.social, bsky.app/profile/cerg...

Watch highly coloured ions MnO₄⁻ & Cu(NH₃)₄²⁺ diffuse in a droplet of water using 2 different paths caused by presence of a magnet during electrolysis. Evidence of charged particles (ions). www.youtube.com/watch?v=qMta... and www.youtube.com/watch?v=w9oM... #ITeachchem #RealTimeChem #chatchemistry

Using microscale techniques in school chemistry to show how carbon in CO₂ can be captured and imprisoned, but I had to let it go to show it worked! Video on www.youtube.com/watch?v=Tstu... bsky.app/profile/did:...

Watch for the effect of a magnet on the iron/thiocyanate complex. Paramagnetism at work. www.youtube.com/watch?v=qipp... #ITeachchem #RealTimeChem #chatchemistry @sfed-rsc.bsky.social

IronIII thiocyanate complex

YouTube video by Bob Worley

youtube.com

Helplines asked #CLEAPSS for an alternative to CuO/H₂SO₄ neutralisation reaction salt making for students to make salts. Not easy, but using ed/ox metal/acid reactions uses the same skills. This is iron(II) sulfate made from staples. #ITeachchem #RealTimeChem #chatchemistry

Making 1-5% soap solutions in 7:3 propan-2-ol/water. Filtered to get a colourless liquid. Laser light reflection indicates it is colloidal. Is the twinkling effect caused by collisions with water molecules? #ChatChemistry #ITeachChem @cleapss.bsky.social @cerg.bsky.social

Evaporation with Thermochromic plastic and 2 kitchen thermometers. Visualise the flow of energy in an open endothermic process at room temperature—an evidence-based small-scale approach using easily available modern materials. #ChatChemistry #ITeachChem @sfed-rsc.bsky.social @cerg.bsky.social

Students encounter a precipitate every day as they wash with soap & make scum. @cleapss.bsky.social has had this method for 20 years as traditional methods were risky but now introduce a personal hotplate. Students stay still. #ChatChemistry #ITeachStudents @sfed-rsc.bsky.social @cerg.bsky.social

This is the link to www.rsc.org/news-events/... for an account of the chemistry education trip to Thailand. @bogwoppitfee.bsky.social #ChatChemistry, #ITeachChem @cleapss.bsky.social @associationscied.bsky.social @roysocchem.bsky.social @beyondben.bsky.social , @unitednationsbk.bsky.social

Five go to Thailand

rsc.org

Many helpline calls regarding aspirin syn come to @cleapss.bsky.social. The cost of the TLC slide is rising more than inflation for schools. Can use iodine to see the chromatogram. The hotplate design comes from teachers in Thailand. Applying #GreenChemistry principles. #ChatChemistry #ITeachChem

Thanks. You can look at these slides and always contact me #ChatChemistry

Newish approach to an old experiment as white phosphorus is no longer available. Red phosphorus is. It was the first use of bottle top in school chemistry as an inexpensive alternative to the crucible. @cleapss.bsky.social subscribers see PS67l Burning phosphorus in air #ChatChemistry #ITeachChem

We tried this after a Helpline call. "Is this still OK to do". Of course it is. It is also on edu.rsc.org/exhibition-c... Our catalyst got so hot it vaporised. Clean the copper foil in acid beforehand and the reaction lasts nearly an hour. #ChatChemistry, #ITeachChem @cleapss.bsky.social

Saw this at icce2024thailand.com. Your own hotplate. @CLEAPSS makes it safer to hold & move using 3D printing (thanks to D?T). Cools from 250C to hand-hot in one minute after removing the flame on its slider. #ChatChemistry, #ITeachChem . More details to come. No need to walk around the lab.