Was gluing something back together the other day and I spilled some. The liquid on the worktop stayed liquid for a while but anything touching it was instantly stuck. Why does this happen?
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Superglue is substance called “cyanoacrylate”, which is in a liquid form but hardens into a solid if it reacts with even small amounts of water. There’s usually moisture on the surface of objects (or your finger), which is why it hardens if you stick it on something. There’s moisture even in air, which is why superglue will slowly harden over time if left by itself.
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