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I think plastics float because they have a molecular density which is relatively lower than that of water, hence the plastic floating.
It also occupies space in water which doesn't enough weight thus the plastic toy float(mind heavy iron ship floats in water in this principal).
Wiki User
∙ 13y ago
Wiki User
∙ 14y agoYou cannot generalise and say all plastic sheets float on water. Only those plastics like PVC, Polyethelene, etc. whose density is less than water, float on water. Teflon sheet will sink in water because its density is much more than water. The floating phenomenon itself is due to bouyancy - which is an upward thrust by the liquid on the matter dipped in it. The gravitational forces will pull the material down and the buoyancy forces will push it upwards. Where ever the buoyancy forces are more than the gravitational forces, the material floats. The weight loss is equal to the weight of the volume of the liquid displaced by the material. This is also the explanation why ships and boats float on water.
Wiki User
∙ 14y agoPlastic is less dense than water. It weighs less per cubic unit. Oil is less dense than water, and it floats, too. Einsteinium is heavier than water, and would not float.
Wiki User
∙ 13y agoit has a lower density, therefore gravity does not pull it down as hard as it is pulling the water
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What is neustonic plastic?
Plastic that float on or near the surface of water.
Does real silver sink?
yes generally silver will sink in water as it is denser than water. but if it is a thin sheet of silver it will not sink and will float on water
Is glass more dense than plastic?
I believe so. If you had glass pieces and plastic pieces, and you threw them all in water, the plastic would float while the glas would sink. I hope this helped. ~;]]
Will methanol sink or float?
How much bouyancy in lbs will one hundred gallons of methonol stored in a plastic bladder provide in water.
Can you put salt in water to make an object float?
If the object does not quite float in water, adding salt to the water might make the object float, yes.
Do plastic boats sink or float?
All plastic items float on water, so therefore a plastic boat floats on water.
Is there a plastic that does not float in water?
yes
What is neustonic plastic?
Plastic that float on or near the surface of water.
Does plastic float on hot water?
This really depends on how dense the plastic is. If it is denser than water, plastic will sink at the bottom. The temperature of the water does not affect whether or not something will float on that liquid.
Dose all plastic float in oil?
plastic will float in water because it is lighter than oil
Does straws float?
Yes, plastic drinking straws will float in water.
Can plastic ball float on water?
Yes.
Do legos float in liquids?
What liquid? Being plastic, they certainly float in water.
Does a piece of plastic float in salt water?
"Plastic" isn't a single thing. There are very light plastics that float in salt water, and very dense plastics that do not.
Do straw float in a glass of water?
Yes, plastic drinking straws will float in water.
Do plastic float on water?
depends if the plastic is heavier or lighter than water and if its hold air which is lighter than water
What type of objects will float on top of water?
The types of objects that will float on water are foil, most rubber, and some plastic.
