You know how plastic tupperware cups always have drops on them when you take them out of the dishwasher? The plates and glass have long since airdried. What is the properties of plastic that does that?
In: Chemistry
Dishes get dry in the dishwasher by getting hot and making the water evaporate from it.
If you’ve ever hand washed plastics with hot water (like Tupperware), you’ll notice it doesn’t get hot. Even if you have boiling water rolling over the plastic, you can touch it seconds later and it still won’t be hot.
Because plastics don’t retain heat.
So since they don’t get hot in the dishwasher, the water evaporates much slower off of it than things that do get hot.
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