• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Water Essay

Extracts from this document...

Introduction

Eric Chang August 16, 09 IB1 BIO SL Mrs. Sandercock Water Essay Water is the most abundant substance we have on earth and vital to all life forms. It is the very essence and the source of life thus no organisms can live without water. The unique arrangement of polar covalent bond in the atomic level of a water molecule causes the two ends of the molecules to have opposite charges. This allows water to demonstrates unique thermal, cohesive, and solvent properties that contributes to the necessity of water to life. Thermal properties Water possess thermal properties of high heat capacity and high heat of vaporization that are significant to life. ...read more.

Middle

Thus water evaporates slowly from ponds and lakes, where many aquatic life forms are dependent on a stable, warm living environment. Cohesive Properties Water molecules are highly cohesive because of the slightly positive and negative ends the polar covalent bonds creates. The positive ends of the molecules attract to the negative ends of another whenever they are close to each other. This generates surface tension and it is why boats can float on water. Cohesive property is crucial to life because when water freezes , the polar attraction of the water molecule lock into place and ice forms. For this reason, ice is less dense than liquid water so that ice floats instead of sinking. ...read more.

Conclusion

The solvent properties of water is important to life because water is an excellent medium to transport. As mentioned earlier, water carries dissolved nutrients and minerals from the soil up from the roots to the leaves of the plant. In addition, blood is primary composed of water and blood is the most common transport medium the regulates in our body by giving nutrients and taking out waste. Summary Statement Though how water provides all this unique properties are complex but there are no doubts that they are all meant for the benefits of all lives on earth. The fact that only water possess all these properties only emphasize the necessity and importance of water on earth. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our International Baccalaureate Biology section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related International Baccalaureate Biology essays

  1. extended essay

    The Diploid DNA is then inserted from the somatic cell into the human egg cell. This procedure is also known as SCNT, which means somatic cell nuclear transfer. After this transfer occurs the egg becomes diploid, in other words it now contains two DNA traits, which are essential for the formation of a human being; and becomes an embryo.

  2. Biology- Extended essay. For this research, I investigated the effects of DDT and ...

    The N=N group is called an Azo group. Azo compounds are generally seen to have vibrant colours, specially reds, oranges, and yellows. Therefore, they are used as dyes, and are commonly known as Azo-Dyes, an example of which is Disperse Orange 1.

  1. Lung Capacity Fitness Level

    by participants are shown as positive values. This is because when breathing in, participants are taking in all the air from and via the spirometer therefore simply put, the air in the spirometer is a negative value because participants have breathed in all the air. On the contrary, when participants breathe out, air is forced into the

  2. Penicillin - its discovery, properties and uses.

    About 161-137 BC, soldiers in the army of Sri Lankan in order to make plaster of the oil cakes (a traditional Sri Lankan sweetmeat) to treat wounds, they stored oil cakes for long periods in their hearth lofts before their campaign start.

  1. Rate of heat loss

    Record this reading. * Start the stopwatch and record the temperature of the water in the test tube at regular intervals of 1 minute. Investigating hypothesis 2: * A test tube was taken and covered with a single thick layer of tissue paper. * This test tube was carefully filled with hot water.

  2. cell theory summary

    2.1.4 Relative sizes of structure and unicellular organism We depend on the microscope for our observation of cellular structures. Observations of this time are for the most part dependable but we must consider the introduction of 'artifacts' by those processes that prepare the material for microscopy.

  1. Biology Extended Essay 2009

    Experiment on Vitamin C and sugar content 3.1 Aim 3.2 Method 3.3 Results 3.4 Discussion 4. Loss of nutritional value critical for human body 4.1 Shelf-life 4.2 Thermal processing 5. Additives and its effect on human health 5.1 Preservatives 5.2 Artificial sweeteners 5.2.1 Fructose and glucose study 6.

  2. Investigating Macromolecules and their Properties

    The reagents would react differently to different solutions and would in turn be able to give us result which would help us in distinguishing and classifying these solutions. This will also allow us to identify different properties of these solutions. Several variables which could affect the dependent variable were controlled.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work