Which of these correctly describes the melting of ice?

Answer 1

* The water molecules in ice are more strongly attached to each other than they are when the ice * is melted. That is why ice is a solid. As the ice warms up, the heat makes the molecules jiggle * around more and more. When it is warm enough, the molecules cannot stay stuck to each other* like they did when they were ice. It is when they break away from each other that melting * happens.* * If you continue to heat the water that came from the ice, it will warm until it boils. When * that happens, the molecules cannot hold on to each other at all. When they break away, they * boil off as an invisible vapor. When that vapor cools a little it makes the fog we call * steam. *

Answer 2

32o Fahrenheit or 0o Celsius. While a molecule of ice is melting it is undergoing phase change, in which the temperature stays constant and energy is used to alter the form of the matter instead of the temperature. This happens during the transition to (or from) any state of matter.

Answer 3

Heat

• Applying heat to ice will melt ice quickly if the ice is in small amounts or in an indoor location. In extreme winter conditions, condensation on the inside of a window can freeze, causing thin layers of ice. You can turn up the heat source in a room to increase the overall temperature and melt the ice.

  Older refrigerators have freezers that accumulate ice blocks from freezing condensation. Every so often, the owner is required to remove the contents of the freezer, turn the freezer off and allow the ice to melt. This process is known as defrosting the freezer. To speed the process of chipping and removing the ice, apply heat from a blow dryer about 6 to 8 inches from the ice.

Chemicals

• Rock salt, potassium chloride and carbohydrate-based solutions come premixed and can be added to other liquid deicers depending on the situation. These chemicals should only be used as directed and outdoors. Some are more harmful to vehicles and pavements than others and these substances vary in cost. Rock salt is known to be relatively inexpensive, yet the high salt content can negatively affect the undercarriages of vehicles, damage asphalt and pollute waterways. Potassium chloride works better at temperatures below 15 degrees F but is about eight times more expensive than rock salt. The potassium solution is biodegradable, doesn't have to be applied as often and doesn't harm steel structures. It could leave surfaces with a "slimy" texture. The carbohydrate-based solutions are made from a corn or beet base and can be mixed with rock salt. They are biodegradable but the liquid can be thick when applied and it may give off a smell.

Answer 4

An ice cube is frozen below 32 degrees Fahrenheit, melting occurs above 32 Fahrenheit, and boils at 212 degrees Fahrenheit. If at absolute 32 degrees water or ice will neither melt nor freeze.

Answer 5

The melting of ice is a phase change process in which the solid ice changes into liquid water by absorbing heat energy. The temperature remains constant at the melting point until all the ice is melted.

Answer 6

cold - solid

warm - liquid

hot - gas

Answer 7

Well when you freeze water all thats happening is your slowing down the molecules. Unfreezing that just means your speeding them back up, creating a liquid

Answer 8

releases heat, endothermic