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Heat will travel faster through a glass cup than a plastic cup because glass is a better conductor of heat than plastic. This means that heat will transfer more quickly through the glass, making it heat up or cool down faster compared to the plastic cup.
Plastic is less dense than glass, so normally a plastic cup is considerably lighter than a glass cup, although in theory a very small glass cup could weigh less than a very large plastic cup.
Ice will typically melt faster in a plastic or styrofoam cup compared to a paper cup. This is because plastic and styrofoam are better insulators, meaning they transfer heat more efficiently than paper. Therefore, the heat from the surroundings will more readily reach the ice in a plastic or styrofoam cup, causing it to melt faster.
Higher molecular interaction force contribute to higher density. In additional, higher molecular weight give tendency to higher density at same intermolecular force. Even plastic had different density, some plastic is lighter than water but some can be twice heavy, PVC for example.
Stirring with a fork is better than a spoon to create foam. Or, better still, use a wire egg whisk and a plastic jug. Pour into a cup or glass once the milkshake is foamy enough.
Foam will insulate better than plastic.
Styrofoam insulates better than a single layer of plastic. If, however, you have one of those plastic cups that have an outer and an inner "wall" with a sealed air space in between, that should work better than the Styrofoam.
Plastic is an insulator. but most of the paper is not insulated, because the paper in general contains water, although the content is very low, but enough to pass current, but there also is a special insulation paper, that is on the special purpose. so in dry conditions, and the cup has no water, a plastic cup is a better insulator than a paper cup.
Heat will travel faster through a glass cup than a plastic cup because glass is a better conductor of heat than plastic. This means that heat will transfer more quickly through the glass, making it heat up or cool down faster compared to the plastic cup.
You're talking about holding the temperature of the water, right? As far as containing the liquid, they're about equal...but a styrofoam or double-wall plastic cup would hold temp better than a glass cup which would work better than a single-wall plastic cup.
Plastic is less dense than glass, so normally a plastic cup is considerably lighter than a glass cup, although in theory a very small glass cup could weigh less than a very large plastic cup.
A plastic cup holds more heat because plastic can't take out heat. Glass conducts heat away.
I would say that plastic cups are better for string telephones because you cant get string through a metal cup.
A glass cup will conduct heat away quickly - a plastic cup would hold heat the best.
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Putting the cup in the freezer keeps ice from melting. Those cups will slow down the melting rate, but if you've got ice at room temperature it's gonna melt eventually. Having said that, ice will melt slowest in a styrofoam cup.
The better insulator is plastic because wood can get wet easily and stay wet longer than plastic.