Station #1: Water and Ice Station Observations on a frozen and a normal can of soda being placed in a pool of water: The normal can of soda Is alright The frozen can of soda Is compressed Observations on Ice cubes being poured in ethanol: Ice cube in ethanol The ice cube floated Ice cube in water The ice cube sank Station #2 Cohesive properties of Water Observations on waters cohesive properties using a paper clip and a coin: Paper clip The paper clip stayed on top for a few
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balance Calcaulator Water Ammonium sulfate Step: Part 1.Measurment of the density of a solid 1. Three metal objects were selected for density determination: a metals‚ and Teflon ball. 2. Make sure each object was determined by weighing on an electronic balance. 3. Add 25 mL of water to the graduated cylinder. Precisely measure this volume of water. Add another 25 mL of distilled water to the graduated cylinder. Again‚ precisely measure this volume of water‚ and then measure the
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____________ 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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Essay on the ’Water’ (200 Words) FRIDAY‚ APRIL 26‚ 2013 ’Water’ is one of the natures precious gifts to mankind. All living things consist mostly of water eg. the human body is of two thirds of water. It is clear‚ colourless liquid that appears blue when viewed through a thickness of 20 ft. The colour reflects not only from physical causes but also from suspended impurities. The freezing point of water is 0degree centigrade and its boiling point is 100 degree centigrade. Water is the most essential
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Water Problem In Japan Table of Contents Abstract In the introduction part‚ I will give the purpose and thesis statement of the research and give some necessary background knowledge to provide some idea for readers. In the Methodology part‚ I will give the method how I collect the information. In the finding part‚ I give the information I find of the water problem in Japan. And in the discussion part‚ I give the process of the research and finally I justify the solution of the
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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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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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preservation‚ and in the last century for lowering the freezing point of water(History of Salt). In pure water 0 degrees celsius is the normal freezing point of water. Ice will melt just as fast the water will freeze. You won’t see the melting and freezing processes as long as they are balanced and equal. Adding salt or any foreign substance to the water upsets the fragile equality between freezing and melting. Less of the water molecules reach the surface of the ice in an amount of given time. The
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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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