____________ Properties of Water Lab Introduction: Water is a simple molecule‚ yet itʼs most vital to all living things. It has the highest specific heat of everyday substances. Unique properties of water enable it to carry out functions that no other substances can. In a neutral aqueous solution‚ five molecules of water are bonded together by weak hydrogen bonds. Furthermore‚ due to the electronegativity of oxygen‚ water is a polar molecule. Due to its polarity‚ water is classified as the universal
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project is to determine whether river water or lake water is cleanest as it relates to tap water. The independent variables being tested in this experiment are the different waters being tested which are river water‚ lake water‚ and tap water‚ which is the control. The dependant variable is which of the three waters are the cleanest as it relates to unfiltered tap water. The purpose of this experiment is to determine what the different aspects of the three types of waters are and how that relates to cleanliness
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both these things water is needed so exploration of Mars by space probes has concentrated on looking for water. Humans have searched for evidence of water on Mars for many years. In 1895 American astronomer Percival Lowell thought that he had seen canals on the surface of Mars. These were disproved as tricks of the eye. Spacecraft in the 1960’s and 1970’s reported that Mars was very dry. However‚ spacecraft in the 1970’s to the 1990’s started to report evidence of water‚ either past or
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Water • Define the terms solute‚ solvent and solution • Solute: Substances dissolved by the solvent (or the component present in a lower amount) • Solvent: Substances in which solutes are dissolved (or the component present in a larger amount) • Solution: A homogenous mixture of 2 or more substances • 1.1.2. Identify the importance of water as a solvent. • Water is distributed in the biosphere‚ lithosphere‚ hydrosphere and atmosphere • On earth‚ it is distributed as a solid‚ liquid and gas
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about getting warm and then they just disappeared. I heard some older water molecule calling it evaporation. I did not like the sound of it but I had to find my parents. My friend Zach agreed to help me. Today we were watching sharks attack a school of salmon when it happened‚ I felt weirdness. Everything started to warm up‚ like my parents had said. Zach felt it too. Looks like we were going to evaporate together. Other water molecule started to go up around us and then we were floating. Day 2
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Plants are mostly made up of water. Lettuce is about 94% water and a potato is about 77% water. Plants need water for three main purposes: ------photosynthesis‚ -support -transport of chemicals Water is a raw material for photosynthesis. If water is in short supply‚ the rate of photosynthesis will be limited. Plants need water for support‚ otherwise they wilt. Water is needed to transport many chemicals within plants. Chemicals‚ such as mineral salts‚ dissolve in water and they can then be moved
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9/11/2012 | | Introduction: Osmosis and diffusion are two procedures that are critical for cell survival. Diffusion is the movement of molecules from an area of higher concentration to an area of lower concentration. Osmosis is the movement of water molecules across a cell’s membrane. These two procedures help a cell to survive because they help maintain homestasis. (Diffusion) Homestasis is the steady or balanced state of a cell. (Diffusion) Therefore it is important to find what conditions will
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Water and me Water is a colourless‚ transparent and odourless liquid which forms the seas‚ lakes‚ rivers‚ and rain and is the basis of the fluids of living organisms. It is a chemical compound whose formula is H2O. It covers 71% of the earth’s surface and is necessary for every known organism to live. 97% of the total water found on the earth lies in the oceans. The rest of water is in the form of glaciers and ice caps (2.1%)‚ ground water (0.6%)‚ inland water (0.2%) and water vapours (0.001%).
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is called simmering. Simmering is cooking the chicken with chicken broth or water. This makes the chicken tender and soft‚ ready to be fried. Firstly‚ rinse each chicken breast. If the breasts are frozen‚ allow them to fully defrost before boiling. The chicken breast can also be defrosted in the microwave‚ in the refrigerator‚ or by soaking it in a bowl of cold water. After defrosting the chicken is soaked in salt water it take the slimly taste out of it. Most Africans do this before cooking any
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group of islands and is rich in bodies of water such as the oceans‚ rivers‚ and lakes. However‚ according to the data released by Water Environment Partnership in Asia (WEPA) in 2005‚ 42.89% of the waters in the Philippines are contaminated. These contaminated waters have not only been continuously harming people‚ but also the aquatic ecosystem of the country. It is said that approximately 31 percent of illness monitored for a 5-year period were caused by water borne sources. Moreover‚ more and more
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