Because it has good insulation.
Yes.
paper
Take a cup holder preferably a foam one for carrying and line it with alluminum foil and possible the can or bottle the drinkbis in.
Heat cannot travel through the foam material so the drink stays well insulated inside the foam cup.
A foam coffee cup is a good insulator because it contains air pockets within the foam that slow down the transfer of heat. The air pockets prevent heat from easily escaping or entering the cup, helping to keep the contents hot or cold for longer periods of time. Additionally, foam is a poor conductor of heat, further enhancing its insulating properties.
Foam cups are typically insulators because they are made of Styrofoam, which is a material that does not conduct electricity well. This means that foam cups are not good conductors of heat or electricity, making them effective at keeping hot drinks hot without transferring heat to your hand.
Yes, you can get cold foam on a hot drink.
The hot cup loses heat faster, but only until it becomes a warm cup itself. Then it loses heat as the warm cup did at the beginning. However, by this point, the hot cup is warm, but the warm cup is now cooler too. Therefore, the warm cup will still become room temperature first.
Probably nothing. The cup may heat up but as soon as you take it out it will go back to normal.
No, foam cups are poor conductors of heat because they have low thermal conductivity. This means that they do not transfer heat well and can help to insulate the contents of the cup, keeping them either hot or cold for longer periods.
Yes, you can put cold foam on a hot drink.
Foam cups are commonly used for serving hot and cold beverages like coffee, tea, and soft drinks. They provide insulation to keep drinks hot or cold longer and are convenient for take-out orders or events where reusable cups are not ideal. However, they are not environmentally friendly as they are not easily recyclable or biodegradable.