This is because we dont want any heat to escape and can measure temperature changes.
because it does
The raw material of a polystyrene cup is polystyrene plastic, which is derived from styrene, a petroleum-based hydrocarbon. The polystyrene undergoes a process called extrusion or injection molding to form the shape of the cup.
A Styrofoam cup will do both. The Styrofoam is an insulator, and, as such, it slows the transfer of heat between the system (the drink) and the surroundings (everything outside the cup) If it is a cold drink, heat moves very slowly through the cup toward the drink. If it is a hot drink, heat moves very slowly through the cup toward the surrounding air.
So long as the reactants and any solvent were ionic and water respectively, nothing. If there was an organic component to the reaction mix, it would depend on what that organic component was - it could dissolve the cup.
Heat is transferred from the cup to your hand through conduction. The molecules in the cup collide with the molecules in your hand, transferring kinetic energy and heat. Additionally, some heat may also be transferred through convection as warmer air around the cup rises and comes into contact with your hand.
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.
A polystyrene cup is an insulator. It is made of a non-conductive material that does not easily transfer heat or electricity.
because it does
A polystyrene cup feels warm because it is a poor conductor of heat. This means that heat is not transferred easily from the outside of the cup to the inside and the cup is unable to dissipate the heat quickly. Instead the heat generated by the liquid inside the cup is trapped making the cup feel warm to the touch.The material of a polystyrene cup is designed to insulate meaning it does not easily transfer heat. This means that heat generated by the liquid inside the cup is retained causing the cup to feel warm to the touch. Other materials such as metal or ceramic are much better conductors of heat and are better able to dissipate heat quickly.The following characteristics of polystyrene make it a poor conductor of heat:Low thermal conductivityHigh resistance to heat transferLow thermal diffusivityWhen a polystyrene cup is filled with a hot liquid the heat of the liquid is not easily transferred out of the cup making it feel warm to the touch. This is why polystyrene cups are often used for hot beverages.
Polystyrene cups tend to hold heat better than plastic cups due to their insulation properties. The material's structure helps to minimize heat transfer, keeping drinks hotter for longer periods.
Polystyrene is a substance that when in a solid state has a lot of holes. These holes trap air inside them and since air is a good insulator, the polystyrene cup is a good insulator. *Air is only a good insulator when not moving, hence why a breeze feels cold.
No, polystyrene is a poor conductor of heat because it has low thermal conductivity. This property makes it a good insulator, which is why it is commonly used for disposable cups to prevent heat transfer between the hot liquid and your hand.
The raw material of a polystyrene cup is polystyrene plastic, which is derived from styrene, a petroleum-based hydrocarbon. The polystyrene undergoes a process called extrusion or injection molding to form the shape of the cup.
The polystyrene is a foam consisting of a lot of air pockets that do not transfer heat quickly. It does depend upon the thickness of the polystyrene. Thinner ones will transfer heat quicker.
The polystyrene cup is a better insulator than metal, metal is a good conductor of heat and so would transfer the heat from the reaction to the air outside it, where polystyrene keeps the heat inside. This enables you to get a much more accurate reading, as less heat has escaped.
The heat capacity of a plastic cup depends on the material it is made of. Generally, plastic cups have a low heat capacity compared to other materials like glass or metal, meaning they heat up and cool down quickly. This property makes plastic cups suitable for quick temperature changes, such as pouring hot or cold drinks.
well a polystyrene cup conducts heat so that is how it keeps your drink warm