The Importance of Drinking Water It sounds so simple. H20 - two parts hydrogen and one part oxygen. This substance is also known as water. Water is important to the mechanics of the human body. Water in the human body represent approximately 50-60% of body weight in adults and 75% of the body of a newborn. The three points that we will look at are: 1. What do we need water for? 2.How much water do we need to drink? 3.What happens if we do not drink enough water? Transition: First‚ you will
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Water is a chemical compound with the chemical formula H 2O. A water molecule contains one oxygen and two hydrogen atoms that are connected by covalent bonds. Water is a liquid at standard ambient temperature and pressure‚ but it often co-exists on Earth with its solid state‚ ice‚ and gaseous state‚ steam (water vapor). Water covers 71% of the Earth’s surface‚ and is vital for all known forms of life.[2] On Earth‚ 96.5% of the planet’s water is found in seas and oceans‚ 1.7% in groundwater‚
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WATER LOGGING AND SALINITY Naheed Ghazanfar Izhar & Associates Consulting 5.1 CLASSIFICATION OF WATER LOGGED AND SALINE AREAS BY DEGREE The existing irrigation system in Khyber Pakhtunkhwa was developed in late 1800s over a century ago. This system was designed for the farming at that time which was much lower than the cropping intensities of today. This system had limited provision for drainage‚ resulting in a rise in groundwater and the occurrence of salinity. |Table
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1 Forms of Water 2 • Water consists of an Water is a Polar Molecule oxygen atom bound to -has oppositely charged two hydrogen atoms ends by two single covalent bonds. – Oxygen has unpaired & paired electrons which gives it a slightly negative charge while Hydrogen has no unpaired electrons and shares all others with Oxygen – Leaves molecule with positively and negative charged 3 ends Water molecules form Hydrogen bonds slightly positive charge hydrogen
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properties of water were tested and proved. These trials and experiments were able to verify the adhesion‚ cohesion‚ polarity‚ temperature stabilization‚ solvency‚ and density changes exhibited by water. During the glass and wax paper lab‚ we observed the adhesive properties of water. When a droplet of water touched the glass‚ it dispersed immediately. The droplet placed on the wax paper remained intact and in droplet form. Also‚ when the glass and wax sheets were flipped‚ the water remained on
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not exist without water. Seventy-five % of the Earth is covered in water providing an environment for organisms to live in. the water molecule is made up of two hydrogen atoms and one oxygen atom. As oxygen atoms are more electronegative that hydrogen atoms the electrons shared covalently between the oxygen and the hydrogen atoms tend to spend more time near the oxygen atom making it partially negative and making the hydrogen atoms partially positive. The partial charges in the water molecule allow
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The Water Cycle Intro How come we never run out of water? After millions of years you’d think that our water supply would be all used up right! It’s not though‚ because of one special process‚ the hydrologic cycle‚ more commonly known as "the water cycle." Main Points This water cycle recycles the Earth’s water supply. In other words‚ the water keeps getting reused over and over. Just think‚ the next glass of water you drink could have been part of a dinosaur’s bath‚ one
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The Observation of organism in a drop of pond water (Paramecium) under LPO and HPO Compound Microscope Doreenda A. Sabao BS Biology I-A .Lab 1 August 01‚ 2013 INTODUCTION A pond is a body of freshwater smaller than a lake. Ponds are naturally formed by a depression in the ground filling and retaining water. Streams or spring water is usually fed into these bodies. They can also be man-made ponds which can be created by damming a stream‚ digging a hole. Ponds are usually
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The water cycle is one of the most or the most important cycle that we have on planet earth. Earth is able to support life because of the plentiful water that it contains. When astronomers search for planets outside of our solar system to see if there is a chance for life on other planets‚ the first thing that they look for is if the planet contains water. However‚ humans are starting to affect the way that the water cycle happens by‚ “We take water out of the system to irrigate crops…” (creditvalley
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The Biological Importance Of Water Water plays a huge role in our lives‚ the molecule which is comprised of two atoms of hydrogen and one atom of oxygen bonded together has many complex properties. The molecule maintains a bent shape due to its tetrahedral arrangement and the negative lone pair of electrons on the oxygen. The electrons from both hydrogen and oxygen are joined covalently but the difference in electronegativity lets the electrons from hydrogen get pulled slightly toward the oxygen
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