Stephen Mulick

Excellent weekend for @GreeleySCIO at NY #scienceolympiad states! 19th of 59 teams, top team from Westchester. 3 🏅, in Tower (pic below), Wind Power, and Engineering CAD #WeAreChappaqua #BestinWestchester

I got You lean towards...Challenging Mode! - Trusted Adulting: What's your go-to mode? tryinteract.com/share/quiz/625…

Another September in full swing! First year with just chemistry, and it's giving me the chance to really dig in to my goals of making learning more visible, building community, and fostering a growth mindset. Ss are taking to it wonderfully #wearechappaqua #iteachchem

14 awards, but all 30 are winners. #SomersScienceFair #WeAreChappaqua #Greeleyresearch @DoyleHGHS

Judging has begun at the #SomersScienceFair! Best of luck to all of the Greeley sophomores! #greeleyresearch #wearechappaqua

Last lab of the year! Copper plating and mini voltaic cells #iteachchem #wearechappaqua

Last lab of the year! Copper plating and mini voltaic cells #iteachchem #wearechappaqua

@KatyDornbos @alfmateus @IBchemmilam @chem_talk You make a great point. Maybe this will have to be my plan moving forward. I usually do both words and diagrams, but maybe just a particle diagram approach is best.

Chem Fun Fact: Ionic bonds are bonds in which electrons are transferred between atoms.

@alfmateus @IBchemmilam @KatyDornbos @chem_talk Fair. I'm happy to have the discussion, for my better understanding and that of my students. I'd offer that students do get something from classification and patterns though. Establishing the class and pattern helps inform us looking at new and similar situations.

@stmulick @IBchemmilam @KatyDornbos @chem_talk We teachers always worry about presenting a simpler model to the students, when we know other models may be more accurate. It is ok to simplify. But we have to know why we are classifying things. Most times, we don't get much from classifications.

@IBchemmilam @KatyDornbos @alfmateus @chem_talk Thanks for the links. Not disagreeing at all on isomerization, clearly chemical. I'm more trying to delineate dissolving solid sodium chloride and dissolving solid sucrose. Both seem to be separating particles in a crystal and solvating them, right?

@stmulick @KatyDornbos @alfmateus @chem_talk The sugar dissolving is chemical if the sugar undergoes ring structure changes. That would be chemical bonds changing not hydrogen bonding. Something like this: www3.nd.edu/~aseriann/gluf…

@IBchemmilam @KatyDornbos @alfmateus @chem_talk Of course it's not black and white, but I frequently worry getting too complex too quickly is alienating to many students, so having a clear 'chemical' and 'physical' bin has been my practice

@IBchemmilam @KatyDornbos @alfmateus @chem_talk 2) How does dissolving sugar/covalents fit into this? Breaking hydrogen bonds to make other hydrogen bonds? I've usually called these attractions, despite the term. Not trying to be contrarian, just wondering. Overall, categories seem to help students as they are first learning

@KatyDornbos @chem_talk I like to think about it the other way around. The bond is the transfer, the attraction isn't a bond. This agrees with dissolving being a physical change; no bonds broken, no chemical reaction. Energy transfer though. The ion attraction operates like hydrogen bonds. Thoughts?

@alfmateus @KatyDornbos @chem_talk I struggle with this. If crystallization is ionic bonds being formed, shouldn't we consider dissolving a chemical change? But we don't

@KatyDornbos @chem_talk You are absolutely right. You just have to think about NaCl(aq) going to NaCl(s), no electron transfer, lots of ionic bonds being formed.

What. A. Day. 7B takes 🥈in the State of NY and is headed to NATIONALS next month in Wichita, Kansas #WeAre7B #WeAreChappaqua

Tried something new in #chemlab this week: use a #chatGPT to give you a procedure. It almost definitely won't be exactly what you're looking for, but leads to a discussion and Ss modify the responses. "Can we do this?" rather than "Where do I start?" #iteachchem #WeAreChappaqua