What factor is most important in determining whether water is a solid,liquid or gas?

Answer 1

Temperature. At atmospheric pressure, ice solid below 32 degrees (Fahrenheit), liquid between 32 and 212 degrees, gas (steam) above 212 degrees.

Answer 2

Both pressure and temperature are factors in what state water is in. but neither is most important or has a greater effect because changing either one just a little bit can completely change the state the water is in.
For example H2O is a liquid at 40 degrees Fahrenheit but only at atmospheric pressure (15psi) but if you increase the pressure enough the H2O will begin to boil into a vapor, and if you drop the pressure enough the water will begin to freeze.
However pressure is not usually a factor when talking water because you can only change the pressure in a controlled environment like an air conditioner. You can figure out exactly what state water will be a during and combo of pressure and temp. by looking at a p/t chart. (pressure-temperature chart)

Answer 3

Temperature will determine if water is solid,liquid or gas

Specifically, temperatures below 0 degrees celsius will turn water into ice (solid).

Temperatures 1 to 99 degrees celsius are liquid

Temperatures of over 100 degrees celsius make it a gas

Answer 4

If you could only use one factor, density would be the most useful. However, to correctly determine the thermodynamic state of water (i.e. whether its liquid, solid or gas), you need to measure at least two thermodynamic properties of the water. Typically, temperature and pressure are used (density/specific volume is another thermodynamic property)

By knowing two thermodynamic properties,one can use standard thermodynamic property tables and charts to determine the state of the water (solid, liquid or gas).

Answer 5

G'day mate, down under in Oz the speed that the water molecules are moving at determines the state of the water. That's the fair dinkum truth mate. Cheers.

Answer 6

The temperature of the water.

Answer 7

Solid is ice.
Liquid is water.
Gas is water vapor.

Now ask yourself what has to change in the environment for water to change from one of these forms to another?
Example: What has to change to turn water to ice?
What has to change to turn ice into water?

Answer 8

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Answer 9

temperature (and air pressure)