No, at a certain temperature the water evaporates and turns into gas.
When you heat ice it takes in the heat and its temperature rises until it reaches melting point. It then takes in heat without getting hotter. When it's all melted, then the water that it now is gets hotter and hotter. When it reaches boiling point more heat will simply turn it into steam without it getting hotter. If you keep adding heat to the steam then it will get hotter. The heat that you have to add to something to change its physical state (i.e. from solid to liquid or liquid to gas) but without it actually getting hotter, is known as 'latent heat'.
smeagol
Because you keep getting more desperate and desperate.
A paper cup typically does not keep water hotter than a plastic cup. Paper is a poor insulator compared to plastic, so heat is more likely to escape from a paper cup, leading to faster cooling of the water inside.
styrofoam, but warning fammable and unsafe for the environment!
Igloo-type cooler.
thermos cup
In general, foam is a better insulator than metal, and so foam would be expected to keep water hotter longer under most normal circumstances.
Heat has a tendency to move from hotter to colder substances. To store thermal energy, you need to keep an object hotter (or colder) than its surroundings; and there are no perfect insulators that stop the flow of heat altogether.
It's a metaphor where one's feelings are compared to a pot of water. The heat is applied to the water, and it gets hotter, and hotter, and finally the water boils over and gets all over the stove top. Sometimes you feel anger, let's say, but you keep it under control and bottle it up (another metaphor) inside while it gets hotter and hotter, and finally gets so hot it escapes, and you cannot help expressing it.
Yes, a black cup can keep water hotter than a white cup due to its color. Black surfaces absorb more heat and can retain warmth better than lighter colors, which reflect more light and heat. However, the actual difference in temperature retention may be minimal and influenced by other factors, such as the material of the cup and environmental conditions. Ultimately, while color does play a role, it is just one of several factors affecting heat retention.
A metal cup will generally keep hot water hotter for longer compared to a paper cup. Metal is a better insulator than paper, so it helps to retain heat more effectively.