what are the physical properties of water?

Question

also what chemical property is responsible for these properties?

Answer 1

Water is a gas (100 degr C and above), liquid (0-100 degr C) and solid (0 degr C or lower). The chemical property that makes this possible is covalent bonding.

Answer 2

- pure water freezes and 0C and boils at 100C (but not if a tiny amount of dissolved salts are present; see bp elevation and fp depression for more about this colligative property)

- H2O is a polar molecule; the HOH angle is 109.5 degrees

- due to its polar nature and the 2 lone electron pairs that orbit the Oxygen like bunny-ears, ions are soluble in water but fatty molecules are not. (Solubility is actually much more complicated than the "rules" you learn in undergraduate chemistry!)

- Water is one of only a few molecules that forms a "hydrogen bond." While intermolecular forces are typically quite weak compared to chemical bonds, in this case, because the oxygen is quite electronegative and the hydrogen has only one shell, you get nearly naked protons on the hydrogens, which associate quite strongly with the lone pair electrons of the oxygens. The energy of this bond is actually stronger than some covalent bonds! This is why the boiling point of water is so high (compared to similar molecules that don't form H-bonds)

- Water is one of the few molecules that is less dense as a solid than it is as a liquid (that is, water expands when it freezes, which is why you drain your outdoor swimming pool if you live in a cold place). As a rule, solids are more dense than liquids. The reason water is different is because of the hydrogen bonds -- the water takes on a crystalline structure when it becomes ice. If it were not for this property, bodies of water (e.g. lakes) would freeze from the bottom-up, and would not form a layer of ice on the top. The ice layer on lakes slows the heat loss of the lake, allowing fish, etc. to live in the lakes all year long!

Answer 3

http://ga.water.usgs.gov/edu/waterproperties.html

Water's Chemical Properties

You probably know water's chemical description is H2O. As the diagram to the left shows, that is one atom of oxygen bound to two atoms of hydrogen. The hydrogen atoms are "attached" to one side of the oxygen atom, resulting in a water molecule having a positive charge on the side where the hydrogen atoms are and a negative charge on the other side, where the oxygen atom is. Since opposite electrical charges attract, water molecules tend to attract each other, making water kind of "sticky." As the right-side diagram shows, the side with the hydrogen atoms (positive charge) attracts the oxygen side (negative charge) of a different water molecule. (If the water molecule here looks familiar, remember that everyone's favorite mouse is mostly water, too).

All these water molecules attracting each other mean they tend to clump together. This is why water drops are, in fact, drops! If it wasn't for some of Earth's forces, such as gravity, a drop of water would be ball shaped -- a perfect sphere. Even if it doesn't form a perfect sphere on Earth, we should be happy water is sticky.

Water is called the "universal solvent" because it dissolves more substances than any other liquid. This means that wherever water goes, either through the ground or through our bodies, it takes along valuable chemicals, minerals, and nutrients.

Pure water has a neutral pH of 7, which is neither acidic nor basic.
Diagram about pH

Water's Physical Properties
Water is unique in that it is the only natural substance that is found in all three states -- liquid, solid (ice), and gas (steam) -- at the temperatures normally found on Earth. Earth's water is constantly interacting, changing, and in movement.

Water freezes at 32o Fahrenheit (F) and boils at 212o F (at sea level, but 186.4° at 14,000 feet). In fact, water's freezing and boiling points are the baseline with which temperature is measured: 0o on the Celsius scale is water's freezing point, and 100o is water's boiling point. Water is unusual in that the solid form, ice, is less dense than the liquid form, which is why ice floats.
Water has a high specific heat index. This means that water can absorb a lot of heat before it begins to get hot. This is why water is valuable to industries and in your car's radiator as a coolant. The high specific heat index of water also helps regulate the rate at which air changes temperature, which is why the temperature change between seasons is gradual rather than sudden, especially near the oceans.
Water has a very high surface tension. In other words, water is sticky and elastic, and tends to clump together in drops rather than spread out in a thin film. Surface tension is responsible for capillary action, which allows water (and its dissolved substances) to move through the roots of plants and through the tiny blood vessels in our bodies.
Here's a quick rundown of some of water's properties:
Weight: 62.416 pounds per cubic foot at 32°F
Weight: 61.998 pounds per cubic foot at 100°F
Weight: 8.33 pounds/gallon, 0.036 pounds/cubic inch
Density: 1 gram per cubic centimeter (cc) at 39.2°F, 0.95865 gram per cc at 212°F

Answer 4

Its a liquid, formed by the bonding of two gases.
Density is 1kg/metre^3 (i think)

Chemical property...uh...no wonder I almost failed chemistry

Answer 5

boiling point is 100 degrees celcius
melting point is 0
density is 1g/cm^3
conducts electricity


chemical

boiling pts
strong inter molecular bonds : hydrogen bonds (dipole - dipole)

the covalent bonds are intra molecular means that it is hard to break up the hydrogen and oxygen bonds


conducts
the ions h+ and oH- are mobile

Answer 6

It is a colorless liquid somewhat devoid of flavor.

Answer 7

H2O also wet lol

Answer 8

solid(cold), liquid(average temp.) , gas (boiling point)

Answer 9

boiling point, surface tension...............to get you started.

Answer 10

it is wet.