The most general definition of foam is a substance that is formed by trapping many gas bubbles in a liquid or solid. It can also refer to anything that is analogous to such a phenomenon, such as quantum foam. Often the term is used in reference to polyurethane foam (foam rubber), XPS foam, Styrofoam or some other manufactured foam. It can be considered a type of colloid.(Copy from Wikipedia:Foam)
To create a foam, you need to start with a liquid viscous enough to hold some shape. Water alone will not do this. Try taking room-temperature egg whites and whisk them in a large bowl. Do this vigorously until you produce... (ta daa!) foam.
Foam is a noun (the foam) and a verb (to foam).
There was foam coming from his mouth.I like foam on my coffee.Is that shaving foam behind your ear?
Foam beds typically consist of several layers, with the top layer being memory foam or polyurethane foam for comfort and pressure relief. The middle layers may include transition foam for support and weight distribution. The base layer is usually high-density foam for durability and stability. Some foam beds may also have additional layers such as cooling gel foam or latex foam for temperature regulation and added comfort.
insulation foam or upholstery foam
High density foam is just your typical foam. It does not conform to your body when it heats up like memory foam does.
foam
Foam Sweet Foam - 1925 was released on: USA: 1 October 1925
Assuming the foam is from furniture stuffing, then the answer is no. Such foam is plastic and is definitely not edible.
Drink the foam
Inside foam is a gas. :)
Foam is NOT plastic!
Foam