When heating ice to gas, does energy increase or decrease?

Question

The energy comes from the flame and transfers heat energy into the ice but was the energy of the water molecules increasing or decreasing? Was any lost? Is it related to the distance between molecules since the heat breaks the bonds of the water molecules and the molecules move farther apart?

Answer 1

We all know that matter exists in 3 different states: solid, liquid and gas. Another state of matter known as plasma does exist, but that is not germane to the matter under question.

Once the molecules gain enough energy to break free of attractive forces, it converts into liquid form. Now as we know, the degree of heat energy posessed by matter is expressed in terms of temperature (measured in degrees celsius or kelvin).

During the conversion of ice to water at 0 degrees celsius, the ice absorbs a specific quantity of energy called the latent heat of fusion - it is the energy required for conversion of matter from solid to liquid state. This absorbal of heat is not indicated by any rise in temperature. Similarly, when water a 100 degrees celsius converts to 100 degree steam, it absorbs a quanity of heat energy called latent heat of vaporisation which also does not exhibit any rise in temperature.

Thus some extra energy is required to convert ice to steam. It shouldn't be counted as a loss, but as more of an overhead.

Answer 2

Hi. During the transfer of energy from the flame to the ice and gas some is lost due to the container, inefficiency of the burn, heat that passes by the container, etc. If that's what you mean then the energy TOTAL is the same but the energy in the gas/ice is less.

Answer 3

ice is at or below 0 degrees celcius. it should contract to four on heating. energy is definitely increasing. molecular kinetic energy does increase, but molecular size decreases. check on the nature of the water molecule for the reason. at and beyond four degrees though, it's clear that intermolecular distance increases and water eventually boils and evaporates. as to wether any energy was lost, heat goes in, generates intermolecular friction and goes back to heat in the environment and even sound on boiling. i'm sure the flame gives more energy than is needed to boil teh water, so yeah a lot is lost, even in heating the container.

Answer 4

when ice is heated the vibration of molecules inside the ice block increases as such the intermolecular space in between the molecules increases.energy absorbed by ice block helps in increasing intermolecular space.according to principle of conservation of energy which is neither lost nor gained.

Answer 5

what did it take to heat it to a gas state. Energy?

And to think you are the future of the human race.

Answer 6

I think that molecules are less under cold conditions. Energy is null.

Answer 7

changing area from stable to liquid, stable to gas, or liquid to gas will consistently bring about a upward thrust in entropy. undergo in innovations, entropy is a level of ailment. a stable is extremely ordered. A gas is extremely disordered. subsequently to bypass from a stable to a gas will improve entropy.

Answer 8

yes