Water is one of the most abundant substances on the planet. It can be
found naturally in all three states; solid (ice), liquid (water), and
gas (steam). However, chemically it is very unusual. For example,
water molecules are slightly polar i.e. they have a positive and
negative end. Due to this difference in electro-negativity the
slightly positive charge on the hydrogen atom is attracted to the
slightly negative charge on the oxygen atom in another molecule. This
bond is called a hydrogen bond and is what causes the water to have
its unusual properties. For example, other molecules of the same size
of water (H2O) are all gases at room temperature and pressure (R.T.P).
Without the hydrogen bonds, water too would be a gas at RTP and would
have a boiling point of -120°C.
Because it is polar, water also has uses as a solvent. Other polar
substance are dissolved by water as the electrostatic attractions
between the water molecules and the ions are greater that the
attraction between the anion and cation. The water molecules surround
the ions and thus the ions become hydrated. Polar substances that
dissolve in water are said to be hydrophilic or "water-loving". The
ability of water to be a solvent has uses in organisms. For reactions
within the body to take place, they usually have to be in solution.
Therefore, using water as the solvent enables more reactions to take
place as more compounds may be dissolved. It is not only human that
use water as a solvent, plants are only able to take up mineral salts
in solution and so use water. Also, organisms that live in marine
environments still need oxygen to respire. The only reason they
survive is because oxygen is dissolved in the water. This would not be
possible if the water molecule was non-polar.
As I have said, water is the most abundant molecule on the planet, but
is also the most abundant molecule organisms. The lowest percentage
composition is 20% in seeds, with the highest being 99% in jelly fish.
Water is used primarily as a solvent in cosmetics products to dissolve ingredients that impart skin benefits, such as cleansing agents (Cosmeticsinfo.org,
my story starts on the atlantic ocean bouncing around the waves from the crest to the trough going up and down the wave height and wave length.
Water has a great number of roles in living organisms, this is largely to do with the structure and covalent bonding in a single water molecule, and between water molecules. Around 75% of the earth is covered in water, and it is reffered to as the most important Biochemical. Its chemical symbol is: H2O In a water molecule there are two bonding pairs and two non-bonding pairs of electrons. These four pairs of electrons repel one another, forming a tetrahedral pattern.
In conclusion, the role of water plays an amazingly complex and vital role in the
There are several characteristics that water possesses that are essential to life on Earth. Four of them are cohesion and adhesion, ability to moderate temperature, expansion upon freezing, and versatility as a solvent. The first part, cohesion, is the attraction between molecules of the same kind. Water molecules have strong cohesive behavior because they have the ability to form hydrogen bonds with each other. Cohesive behavior is what is responsible for surface tension, which is when stress or tension is placed upon a liquid’s surface and it resists rupture. This occurs because water molecules on the surface will form hydrogen bonds with their neighbors, the same as the other water molecules further within the liquid. The molecules on the surface however, since the are exposed to the air on one side will have fewer neighboring water molecules available to bond with. Therefore, they will form stronger bonds with the neighbors that are available. Surface tension is responsible for allowing insects to walk across the top of water and mate and feed
Besides drinking it to survive, people have many alternative uses for water. These can be : cooking, taking a bath, washing clothes, washing cooking and eating utensils; such as billies, saucepans, crockery and cutlery, keeping houses and communities clean, recreation; such as swimming pools, keeping plants alive in gardens and parks. Water is made up of two Hydrogen atoms and one Oxygen atom. Water is the most common element found on earth. Water may exist in liquid, solid and gaseous states. Water as water itself in liquid form, then it becomes solid when frozen and it can also become a gas when it is in its water vapor state.
Water is one of the most important substances on earth. All plants and animals must have water to survive. If there was no water there would be no life on earth. Water nourishes
“Drinking water is like washing out your insides. The water will cleanse the system, fill you up, decrease your caloric load and improve the function of all your tissues.” – Kevin R. Stone --
As the sustenance for all humankind, animals, plants and other living organisms, Water is the greatest natural resources on this planet and it is becoming scarcer and more of a necessity. Water is a basic need and not a want in the same way that without air to breathe, cannot sustain life. Safe, clean water and good sanitation is a right. Therefore, the right to safe, clean water means the right to life. According to United Nations human rights are rights inherent to all human beings, whatever our nationality, place of residence, sex, ethnic origin, color, religion, language or any other status. Based on UN definition I am confident to assert that safe, clean drinking water and good sanitation is a basic human
Water is a colorless odorless chemical liquid that can be found in many common household chemicals that we use every day. Water is a substance that is so unordinary that it is not only an acid but also a base. This quality of water makes it a highly capable solvent that in even small doses can do small extreme damage to not only the human but also can cause damage to objects when we apply it directly them. But still water is so common that you can purchase it in almost any city in any country without there being any kind of repercussions.
The Biological Importance of Water as a Solvent and as a Medium for Living Organisms
Physical and Chemical Properties of Water Physical Water is the most cohesive non-metallic liquid. Hydrogen has a positive charge and Oxygen has a negative charge, so they attract each other and form a bond. Capillary action happens because of waters cohesiveness and stickiness. Capillary action occurs when the adhesion of water to the sides of the vessel it is in are stronger than the forces between the molecules. Another physical property of water is its color, water is actually not colorless, despite popular belief, but is actually slightly blue tinted.
Water is an essential nutrient that our body requires every day. Without water human life cannot be sustained. Water deprivation kills faster than lack of any other nutrient. People do not think of water as a nutrient and don’t realize the important role of water in the body functions.
Water is an essential part of life. It is always available and inexpensive. Water is nontoxic and do not give rise to the toxic products. It has a very high heat absorption capability due to the high heat of vaporization and a high specific heat for both liquid and gas phases. The heat absorption of water is the same as when the sponges absorb water. The longer the water is exposed to the heat source, the more the heat that the water absorbs. The heat of vaporization is the quantity of heat that must be absorb if the certain quantity of liquid is vaporized at the constant temperature while the specific heat is the amount of heat required to change the substance by one degree of temperature.
Water covers about seventy one percent of Earth’s surface. Earth is the only planet to have stable bodies of liquid water on its surface which is crucial for all known life forms. Water is a substance which acts as a solvent in which organic compounds can mix, and it is the substance which is thought to be necessary to facilitate the formation of life. There are many forms of water which include ice, liquid, and gas. Because water can exist as a gas, it can be stored in the atmosphere and be delivered as precipitate. Water also helps regulate the climat...