Sticking with Chemistry on Mole Day!

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Happy National Chemistry Week! This year’s theme is “Sticking with Chemistry,” a celebration of the science of glues and adhesives. It’s no coincidence that today is also Mole Day, the annual festival honoring Avogadro’s Number – the number of molecules or atoms that comprise a mole of a substance: 6.02 x 1023. That’s 602,000,000,000,000,000,000,000 molecules or atoms!

It’s Mole Day! (image from

On the chemistry of glue, here’s an infographic from Compound Interest:

The Chemistry of Superglue by Compound Interest

In terms of nanoscience and stickiness, it’s always fun to revisit our blog posts on ivy, Spider-Man, and gecko feet!

Left,: gecko toes! There are even finer structures on the toes than those visible here. (image by Bjørn Christian Tørrissen) Right: gecko-inspired nanosetae (reprinted with permission from Ho et al., copyright 2011 American Chemical Society1).

Looking for some sticky science to try at home? Here’s an ACS Reactions video (with consulting contribution from our own Dr. Alicia McGeachy!) all about making magnetic slime:

Skipping work to make slime feels all the more relevant in 2020

Finally, it’s hard to believe, but this is our seventh year posting on Mole Day and/or National Chemistry week! Here’s a little tour down memory lane:


  1. Ho et al. Fabrication and Analysis of Gecko-Inspired Hierarchical Polymer Nanosetae. ACS Nano, 2011, doi: 10.1021/nn103191q

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