Yes
One can find information about plastic foam, also called microcellular plastic, by reading about it in a rich dictionary, on Wikipedia or website 'Forms'.
plastic bottle plastic bag Polystyrene foam CD covers Plastic ropes
Mass I think because foam is not a shell structure or frame.
Polyurethane (PUR and PU) is a polymer composed of a chain of organic units joined by carbamate (urethane) links. While most polyurethanes are thermosetting polymers that do not melt when heated, thermoplastic polyurethanes are also available. Polyurethanes plastic commonly used in the manufacture of flexible, high-resilience foam seating; rigid foam insulation panels; microcellular foam seals and gasket - in.kompass.com/a/bottles-plastic-for-the-pharmaceutical-and-cosmetic-industry/2071009/
Foam is NOT plastic!
Refrigerators and freezers have plastic foam core as it is the most resistant to the low temp inside the compartment,but even Teflon can be used
Foam will insulate better than plastic.
The correct spelling is "styrofoam." It is a type of lightweight foam material commonly used in packaging and insulation.
Assuming the foam is from furniture stuffing, then the answer is no. Such foam is plastic and is definitely not edible.
Hobie Alter made some of the first foam surfboards, and he used polyurethane foam. But basically, any rigid plastic foam that won't melt when you put resin on it will work.
Unable to say, as this will depend on the plastic resin, the filler material, if a blowing agent was used to foam the plastic, and the size/shape of the object.
Yes
to stop condesation of water from the surface of pipe.
It depends on the manufacturer and the type of vest made - it could be some plain old plastic foam to something like neoprene.
One can find information about plastic foam, also called microcellular plastic, by reading about it in a rich dictionary, on Wikipedia or website 'Forms'.
plastic because foam can get a hole in it easier and can cause your kool-aid to spill out on your pants