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This experiment works by assuming a heat balance. You assume that all of the heat in the iron goes into the water and that none of it leaves the system, so you want your experimental apparatus to be as insulating as possible.
If you use a cup with poorer insulative properties, you will estimate a lower value for the specific heat of iron. The styrofoam cup is not a perfect insulator, but it is better than plastic or ceramic.
You can get a feel for this by pouring three cups of kettle water into plastic, ceramic and styrofoam cups. Leave them sit for a set time. Which one feels the hottest? That one is the best insulator. Which one feels the coolest? That one is the poorest insulator.
Wiki User
∙ 14y ago
Wiki User
∙ 13y agoStyrofoam keeps water hot longer because it is not a very good conductor of heat but a glass cup is a good conductor of heat and so is the plastic cup (not as good a heat conductor as glass, but still is).
Wiki User
∙ 11y ago"Styrofoam" is a trademarked brand of extruded polystyrene foam, owned and
manufactured by The Dow Chemical Company. The word 'styrofoam' is often
incorrectly used as a generic term for expanded (not extruded) polystyrene foam,
such as disposable coffee cups, coolers, or cushioning material in packaging.
The material used for disposable cups is a very poor conductor of heat, so the heat
in the drink has a difficult time escaping, in any direction except straight up from its
exposed surface.
Other poor conductors of heat include most glass, wood, paper, air, and water, although
air and water are reasonably effective at transporting heat by means of convection.
Wiki User
∙ 14y agoStyrofoam is more insulative, meaning heat travels slower trough the styrofoam than the plastic. Therefore, heat is lost slower, and therefore keeps the liquid hotter longer.
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Are hot liquids in styrofoam cups dangerous?
hot liquids in styrofoam cups release toxic carcinogens into the beverage . the heat leeches them into the liquid. avoid them for coffee or tea etc.
Is a metal cup a better insulator or a plastic cup a better insulator?
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.
In two or more complete sentences explain to someone who knows nothing about heat transfer how to construct and use a constant pressure calorimeter.?
It is a very simple device; basically it can be made from two styrofoam cups, a stirrer and a thermometer. Placing the two styrofoam cups inside each other (for insulation), a chemical reaction in a liquid medium (typically water) is performed in the inner cup, and the change in temperature recorded.
Does Styrofoam cups keep hot drinks hot or cold drinks cold?
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.
Names of 10 polymers and their uses?
plastic - grocery bags polyester - clothes rubber - balls nylon - fabric teflon - skillets polystyrene - styrofoam cups bakelite - old telephones kevlar - bulletproof jackets polyisoprene - latex rubber balloons
What is the best cup to keep a drink hot?
Styrofoam cups will keep a hot drink warmer for a long time. Insulated cups will also keep your drink warmer longer.
Which is worse for the environment - styrofoam cups or plastic cups?
I would say styrofoam as they would seem easier for birds etc. to pick it apart and eat.
Where can you buy disposable coffee cups?
Sam's Club and Costco carry the paper (or styrofoam) cups with plastic lids.
Are hot liquids in styrofoam cups dangerous?
hot liquids in styrofoam cups release toxic carcinogens into the beverage . the heat leeches them into the liquid. avoid them for coffee or tea etc.
Which type of cup will keep a hot drink, warm longer paper, plastic, Styrofoam or glass?
Styrofoam cups are generally the best at keeping hot drinks warm for a longer period of time. This is because Styrofoam is an excellent insulator, meaning it does not conduct heat well and therefore helps to keep the temperature of the drink constant. Paper cups and plastic cups are also decent insulators, but they are not as effective as Styrofoam. Glass cups are poor insulators and are not recommended for keeping hot drinks warm.
What kind of cup keep liquid cooler?
stirafoam cups keep liquid warmer
What type of cup will keep water the coldest a styrofoam cup or plastic cup?
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.
Is styrofoam polar or nonpolar?
Thermoplastic is a term that refers to a substance turning into plastic when exposed to extreme temperatures. This would make Styrofoam thermoplastic.
What are tyeps of litter?
Types of litter are Styrofoam cups, food cartons, plastic, napkins, paper, aluminum cans,snack wrappers, PLASTIC BAGS........AND MORE.
What type of cup will keep a drink warmer?
a type of cup that will keep a drink warmer is a thermos, you can get them in many different sizes (cup sizes). they can be found in any household goods stores even woolworths.
What is styrofoam cups made of?
Styrofoam... it's like polystyrene
Is a metal cup a better insulator or a plastic cup a better insulator?
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.
