The importance of water Water is one of the weirdest compounds known to humans. The difference between the boiling point and freezing point of water is one of the largest ranges of any compound. It is this span of temperature that mirrors the range of where life can exist‚ from bacteria to humans. Water also has a very high specific heat‚ which means that it can absorb or lose much heat before its temperature changes. This is important in maintaining body heat in mammals. It also takes a lot of
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Water: the source of life Water is an indefinable element. It can be destructible and wipe out the strongest forces in the world while it was also the beginning of life. It gives a lot but it can take back more than that. Water is one of the four elements of nature. It’s represented in the liquid form while earth is sold‚ air is gas and fire is the in-between of all. Water is important to every living thing. For plants it’s absorbed from the soil‚ for humans it’s for drinking and use for various
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Water is a chemical compound with the chemical formula H2O. A water molecule contains one oxygen and two hydrogen atoms 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 (water vapor or steam). Water also exists in a liquid crystal state near hydrophilic surfaces. Water is considered a purifier in most religions. Major faiths that incorporate ritual washing (ablution) include Christianity
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Identification of a Hydrate Based on Percent Water Varun Wadhwa 11/19/12 Introduction The identity of an unknown hydrate was determined by massing the hydrate before and after heating and calculating the percentage of water. Procedure First‚ we cleaned‚ dried and heated an evaporating dish for five minutes on an iron ring with the Bunsen burner and massed it. Then‚ we added 2 grams of an unknown hydrate and calculated the mass of that. Next‚ we used gradually increasing heat for
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the Water Cycle The main parts of the water cycle are evaporation‚ condensation‚ and precipitation. They go together in a circle/cycle called the water cycle. None of these parts can be missing. (Well‚ everything in the water cycle is needed.) Evaporation- Evaporation is when water turns into water vapor and flows up into the sky. You can’t see it because it’s now gas and gas is invisible. Evaporation usually happens on hot‚ rainy days because the sun’s energy turns water into
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thank god for keeping me calm with all the stress I had. Abstract The purpose of my project is to explain the processes of the water cycle‚ explain what it is‚ and to show the process of evaporation and what happens during this process.my procedure consist of placing the small container in the middle of the large ‚ clear bowl. Fill the bowl with a little water‚ being careful not to fill the small container inside. Cover the bowl with plastic wrap‚ and fasten the plastic wrap around the rim
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vaporisation of water You should attempt this part of the activity even if you have not seen the demonstration of the practical. 1. Calculate a value for ∆Hvap for water in KJ mol-1 using the data from the demonstration. Also‚ calculate ∆Hvap from the following data gathered by a student; 8100 J were needed to distil 2.95g of water. a) Explain why the boiling tube was surrounded with expanded polystyrene (or other similar insulation)‚ but the condenser was left uncovered. b) Before any water was collected
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GROUND WATER THE WATER/HYDROLOGIC CYCLE * Composed of evaporation from the oceans * Movements of moist air inland * Condensation and precipitation * Run-off on the surface or sub-surface back to the ocean * Plus additional minor cycles * Involves the exchange of water with the atmosphere‚ the earth‚ and the different water forms * Done when clouds gain water vapor from the various water forms * Evaporation – process where water turns into steam or gas when the
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Purification of Water Domestic: Distillation - In the process of distillation water is heated and evaporation takes place‚ whereby water changes back to water when cooled; this process is called condensation. The condensed water is the purest form of water‚ free from microbes‚ and impurities. Boiling - Boiling is the best and simplest method to purify water. After straining the water twice through clean muslin cloth‚ it is boiled for ten minutes lo kill the microbes present in it and also remove
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Water Cycle Earth’s water is always in movement‚ and the water cycle‚ also known as the hydrologic cycle‚ describes the continuous movement of water on‚ above‚ and below the surface of the Earth. Since the water cycle is truly a "cycle‚" there is no beginning or end. Water can change states among liquid‚ vapor‚ and ice at various places in the water cycle‚ with these processes happening in the blink of an eye and over millions of years. Although the balance of water on Earth remains fairly constant
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