because you are allowing more of it to be exposed to water. it is called heat transfer. while the oxygen is much cooler than the cup itself, it will cool the cup. this happens without stirring, but with stirring, you are increasing the "surface area" (the parts that are at the bottom are being exposed) which speeds up the process.
give me trust point? (:
the water molecules are getting cold
The cup may be damaged.
Basically, the rate at which the water will cool depends on the difference between the water's temperature, and the temperature of its surroundings. The higher the temperature difference, the faster it cools. There are some other factors, but that's the gist of it...
No, it wouldn't. a sugar cube would melt a lot faster in a cup of Hot water. the hot water helps it desolve more evenly than cold water.
a styrofoam cup. i tried it on my science project
The fastest way to cool hot water is to place the cup in a bowl of ice water or use an ice bath. Stirring the water will also help distribute the heat more evenly and speed up the cooling process.
Hot water will cool if placed in a cool area. Or pouring hot water back and forth between two vessels (pans, jugs, etc). Blowing on a hot cup of tea is a common method.
the water molecules are getting cold
A styrofoam cup can help to retain heat, but it is not as effective as materials like ceramic or insulated metal. Hot water in a styrofoam cup will cool down faster compared to using a better insulated material.
The cup of boiling water will lose heat to the surroundings and cool down, while the cup of ice water will gain heat from the surroundings and warm up. Eventually, both cups of water will reach the same temperature as they exchange heat until thermal equilibrium is reached.
Warm it and add yogurt or some cream about half a cup with some water.
I don't think that is possible. How can "hot" make "cool" water "cold"? (also, 'hot ice' is boiling water)
choices are: The cold will flow from the metal into the hot water, causing the hot water to warm up and the metal to cool down. b. The energy from the hot water will flow into the cold metal, cooling the water down and heating up the metal. c. The cold will flow from the metal into the hot water, causing the hot water to cool down and the metal to warm up. d. The metal will cool down because the specific heat of water is high.
try covering the glass, so the heat particles stay inside the cup, and the hot water stays hot.
That depends on how hot the water is in the cup. Use the thermometer to measure it and see.
The plastic cups I can get have thin walls. This means the water without ice stays as water because any temperature changes to the water will not last very long. Insulated cups have thick walls so they will cool liquids cool and hot liquids hot
Convection heat transfer occurs when hot water flows into cool water. This is because the hot water heats up the cool water through the movement of fluid.