I found three different kinds of polyethylene described online, and the density
of all of them is less than 1.00 gm/cm3 . So that means that no matter what
kind of polyethylene you use, and no matter what shape you fashion out of it,
it will float in water.
it will float as long as it is not fully covered water.
Polythene, also known as polyethylene, typically floats on water because it has a lower density than water. This is due to its molecular structure, which enables polythene to be less dense and float on the surface of water.
All by itself, the 'mass' of an object ... the amount of material in it ... doesn't tell you anything about whether it will sink or float. An AlkaSeltzer tablet and a large boulder both sink, but a duck and a large steel battleship both float. There must be more to it.
How can you make a chocolate float or sink
what make stuff sink or and float
float
sink
sink
Sink
Some plastics will float in water and others will sink. It depends on the type of plastic and in particular it depends on the density of the plastic material. This property is used as a method for separating the different plastics sent for recycling. Polyethylene and Polypropylene, for example, will float in water while PVC and ABS will sink.
Most plastics are less dense than water and will float, but some heavy plastics, such as polyethylene terephthalate (PET) or polyvinyl chloride (PVC), can be denser than water and sink. However, these are not commonly used for everyday items.
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