Meteorology and Weather

Why does steam have a lower specific heat than water?


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2010-09-11 20:28:33
2010-09-11 20:28:33

First we must understand that there is a direct correlation between temperature of a substance and the amount of molecular movement. At absolute zero the molecules do not move at all. As the temperature increases, so does movement. As movement increases, so does temperature.

Water has two hydrogen atoms and one oxygen atom. The oxygen of one water molecule has two lone pairs of electrons. Each can form a hydrogen bond with the hydrogen on two other water molecules. This repeats so that every water molecule is bonded to four others (two through its lone pairs and two through its two hydrogen atoms.) These bonds restrict movement.

Since heat makes molecules move and the hydrogen bonds resist this movement, it takes more energy to break the bonds of liquid water and force the molecules apart into a gaseous state. Once transformed to a gas, there are fewer bonds to overcome, so the energy to make the molecules move (heat them up) is lower.


Because steam is actually hotter than water AT FIRST, but after it gets into the atmosphere it lowers which is why it condensates (condenses) on a wall or glass or something. Because it lowers heat, it sticks.


Related Questions

Impurities lower the specific heat capacity of water.

Boiling water has a lower latent heat than steam. Steam is the transition from liquid to gas for boiling water. If by boiling water you mean liquid water at the temperature of 100 degrees Celsius then yes, steam has a higher latent heat.

A steam engine uses water, steam, and heat.

Because it has a lower specific heat capacity than water.

No. Water has a higher specific heat than any other common substance.

Close to that of water but the carbon dioxide bubbles will lower the specific heat capacity somewhat

land heats faster than water because it has lower specific heat capacity

Yes. The specific heat capacity of liquid water is 4.184 J/g•oC, and the specific heat capacity of steam is 2.010 J/g•oC.

Land, because it has lower specific heat capacity.Land, because it has lower heat capacity.

Soil does not have a higher specific heat than water.Specific heat capacity, also known simply as specific heat (Symbol: C or c) is the measure of the heat energy required to raise the temperature of one gram of a substance by one Kelvin (or degree Celsius). Water has a specific heat of 1 calorie / gram / degree C.The specific heat of dry is soil is ~ 0.2 calorie / gram / degree C or ~ 5 times lower than the specific heat of water. The specific heat of moist soil is the weighted average of the water and mineral components of the soil .

specific heats of the samples compare with the specific heat of water

Stem burns are severe than that of boiled water because steam possess the heat require to convert water from liquid to steam i.e. Latent heat and the heat possessed by the steam for boiling.whereas the hot water lacks the latent heat and only possess the heat applied.

The steam density refers to the density of steam at a given specific heat and boiling point.

heat energy required to raise the temperature of ice by 29 celsius =specific heat capacity of ice * temperature change *mass of ice + to change 1kg of ice at 0 celsius to water at 0 celsius =specific latent of fusion of ice*mass of water + heat energy required to raise the temperature of water by 106 celsius =specific heat capacity of water * temperature change *mass of ice + to change 1kg of water at 106 celsius to steam at 106 celsius =specific latent of fusion of ice*mass of steam

No, water does not heat up or cool down faster than soil. This is because soil has lower specific heat. Specific heat is how long it takes for a substance to heat up or cool down.

The heat of evaporation of 1 gram of water at 100C at atmospheric pressure is 538.5 calories. 1 gram of water condensing from a 100% quality of saturation (dry steam) at 100C and atmospheric pressure releases 538.5 calories. For lower quality the enthalpy is lower. Such that the latent heat of evaporation is reduced by the amount of moisture in the steam.

By removing heat energy from the steam.

No, steam is water as a gas.

Alike... Both have a Specific heat value of 0.5 Both are another state of water --------------------------------------------------------- Different... Ice is 32 Deg F and below while steam is 212 Deg. F and above To change water to ice you need 144 BTU (latent heat of fusion) To change water to steam you need 970.3 BTU (latent heat of evaporation)

Typical heat capacities are (exact values depend on temperature): Solid (Ice): 2.108 kJ/kg·K Liquid (water): 4.187 kJ/kg·K Gas (water vapor/steam): 1.996 kJ/-kg·K In comparison - you can see that liquid water has a higher heat capacity that ice or steam.

The specific heat of water is 4.186 joule/gram °C.

The lower a material's specific heat, the more its temperature increases when heat is absorbed.

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