I flaired as “other,” but I suspect this involves both chemistry due to state of matter changes and physics due to the involvement of thermodynamics. I don’t know. If you want to tell me with your answer which flair would’ve been more appropriate, I’d appreciate it.
I’ve tried looking up injection molding, since I assume it’s similar (although it seems the processes I’m reading about require a more solid resin than the “Goop” you used in these toy molds). Even though the Goop isn’t quite solid, I’m assuming the process is still that it melts down even more and then becomes more solid during the cooling process.
I’m just not understanding why. I might understand if it had started solid, since then cooling it just returns it to its natural state after heating. That would just be like making fudge. But this stuff was gooey, and it came out firmer (although still pretty wobbly) after you cooked and cooled it. How would you explain the science of how this works in child-friendly terms? How does reducing a goo into liquid and then cooling it make it firmer?
In: Other
Nothing much chemical would happen when you heated the goop and injected it. It’s just that it would be heated to it’s melting point you could squish it into the mold and then it cools and solidifies at room temperature. Kind of like how you can melt/cast/melt/cast beeswax into different shapes
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