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2007-11-14 17:54:46 · 9 answers · asked by holly f 3 in Science & Mathematics Biology

9 answers

it is highly polar
it can act as an acid or a base, depending on the situation
it is sometimes considered "the universal solvent"

2007-11-14 17:57:29 · answer #1 · answered by Anonymous · 1 0

Describe The Properties Of Water

2016-12-26 21:00:13 · answer #2 · answered by ? 4 · 0 0

Important Properties Of Water

2016-10-06 07:19:55 · answer #3 · answered by ? 4 · 0 0

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2016-04-10 08:32:07 · answer #4 · answered by Anonymous · 0 0

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RE:
Name and describe the major properties of water?

2015-08-06 15:42:03 · answer #5 · answered by Anonymous · 0 0

In general biology classes, these are the properties of water that are usually emphasized:

A. Water is polar.
1. This means that water has a positive end (hydrogen end) and a negative end (the oxygen end).
2. Since water is polar, it dissolves many kinds of molecules by pulling on the parts that have charges. Dissolving substances is important because many materials must be dissolved to be moved around inside an organism.
3. Water molecules tend to stick to each other, positive end of one sticking to negative end of another. This causes such effects as capillary action and surface tension.

B. Water expands as it freezes.
1. So ice forms on the tops of lakes and rivers, leaving a suitable habitat underneath for many organisms.
2. Water freezing in the cracks of rocks breaks the rocks to pieces, helping to form soil.
3. Water freezing inside cells can kill the cells by breaking them open.

C. Water resists temperature change.
1. The water inside living things helps maintain a more even body temperature.
2. Water in natural ecosystems doesn't have extremely variable temps like other habitats have - easier on the organisms that live there.

2007-11-14 18:55:51 · answer #6 · answered by ecolink 7 · 5 0

water is a small polar molecule with the molecular structure H2O. It has 2 lone pairs of electrons in its valence shell and a signature 'bent' shape to it. This bent shape is what contributes to its polarity, with more electrons being held around the oxygen than around the hydrogens. the polarity of water is one of the most important factors about it, as it prevents it from crossing non-polar barriers and allows it to dissolve other polar compounds. its also both a weak acid and a weak base, so it has the potential to accept and donate protons. this is visualized on the pH scale, and pH plays an extremely important role in biological systems.

2007-11-14 17:58:11 · answer #7 · answered by Anonymous · 0 0

describe major properties water

2016-01-31 07:44:39 · answer #8 · answered by Anonymous · 0 0

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:
o Weight: 62.416 pounds per cubic foot at 32°F
o Weight: 61.998 pounds per cubic foot at 100°F
o Weight: 8.33 pounds/gallon, 0.036 pounds/cubic inch
o Density: 1 gram per cubic centimeter (cc) at 39.2°F, 0.95865 gram per cc at 212°F

2007-11-14 17:58:44 · answer #9 · answered by Anonymous · 0 1

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