No
Someone looking to purchase polystyrene balls can find them at any hobby or craft store. Michael's would carry polystyrene balls. Online, one can purchase them at Amazon or eBay.
Yes, polystyrene is a better insulator than metal. Polystyrene has a lower thermal conductivity, which means it is more effective at preventing the transfer of heat compared to metal. Metal is a good conductor of heat, so it allows heat to pass through easily.
Well, isn't that a happy little question! One way you could separate polystyrene balls from marbles is by using water. Since polystyrene balls float and marbles sink, you can gently pour water over the mixture and the balls will float to the top while the marbles stay at the bottom. Just remember to do it with a gentle touch and a big smile!
Of those listed, polystyrene balls is the best thermal insulator but polyurethane is better.
Yes, thermocol balls are made of expanded polystyrene foam, which is less dense than water. This is why thermocol balls will float on water.
Polystyrene (especially the expanded "Styrofoam (R)" type) is a good insulator. Metals are good conductors of heat.The insulating cup will maintain a greater heat differential than the conductor so if there is a liquid in the cup that is at a greater temperature than the surroundings, the metal cup will loose more heat than the polystyrene cup.
Rub my metal balls or rubber balls.
Donald duck
No, 1 kg of sand and 1 kg of polystyrene balls have the same weight because they both weigh 1 kilogram. The volume and density of the materials may differ, but in terms of weight, they are equal.
paper
They are typically called "stress balls" or "fidget balls."
There aren't.