Density
Density
An effective potholder has density and low conductivity.
Low heat capacity for effective heating.
so you dont burn yourself
Yes
isnot energy type
If you have one of those fancy-pants fans above your range (which im sure you do) turn that on and place a pot-holder on the handle of the pot and quickly put it on your counter. (but dont rush yourself)
A flower pot, i guess! A vase.
A bamboo plate holder works great on pot lids too.
The best way to hold a kettle is by the handle. If the kettle does not have a handle then one should use a oven mitt or a pot holder.
Usually "pot metal," or low-grade steel.
So you don't burn yourself.