remains frozen. When the temperature reaches 0°C (the melting point of water)‚ the ice begins to melt. Because melting is an endothermic process‚ the heat we add at 0°C is used to convert ice to water and the temperature remains constant until all the ice has melted. Once we reach this point‚ any further addition of heat causes the temperature of the liquid water to increase. You observed a phase change process for ice (solid water) being melted‚ heated and then boiled in class. A graph of the temperature
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from Fruits How Cross-linking Changes the Properties of a Polymer Integrated Science Sample SBA Task Practical Related Task – C1 Osmosis in Living Tissue Student Handout (Version 1) Purpose To determine the water potential of potato tissue. Background When two solutions with different concentrations are separated by a selectively permeable membrane‚ osmosis takes place. Water will pass from the side with higher water potential to the side with lower water potential. When a plant tissue is immersed
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petri dish. There was one growth that was a dark grey colour with a mottled appearance‚ another that was a white colour with a mottled appearance‚ and finally one that was a tan colour with a bubbly appearance. Water: There is a small and very stale pond near my house that I took the water sample from. This was by far the most disgusting of the three observations. The growth I observed looked like a very dark Picasso painting. There was a black coloured colony that had a fuzzy appearance‚ there was
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Lab #6 Properties of Hydrates Purpose: The purpose of the “Properties of Hydrates” lab is to study hydrates‚ and be able to identify them. This lab also focuses on observing the reversibility of hydration reactions by hydrolysis‚ and also testing substances for efflorescence of deliquescence. Procedure: A. Identification 1. Place 0.5 grams of each compound (Nickel Chloride‚ Potassium Chloride‚ Sodium Tetraborate‚ Sucrose‚ Calcium Carbonate‚ and Barium Chloride) in a small dry test
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process of distillation. Distillation is the separation of volatile substances mixed with nonvolatile substances by boiling the mixture to alter the phase of the volatile substance. The researchers used the simple distillation set up to conduct the experiment. 25 ml of The Bar Vodka was used and 7 ml of distillate was collected before a temperature of 95 degrees Celsius was reached. Collected distillate was then subjected to a flammability test to confirm ethanol content. The percent ethanol was computed
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Properties of Substances- Gr.12 Chemistry Final Lab Report Lab: Properties of Substances M. Nguyen SCH4U April 27‚ 2012 Abstract The purpose of this experiment was to use a variety of tests to identity the type of bonds which are present in each solid. Various substances (paraffin wax‚ sucrose‚ sodium chloride‚ tin‚ and silicon dioxide) were experimented and identified with tests for hardness‚ solubility‚ conductivity‚ and the time for the solid to melt with a candle and Bunsen burner
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BIOLOGICAL SCIENCE Rubyna May L. Espiritu Sir Adrian Guinto BSEDSS 1-1N November 15‚ 2012 The Characteristics of Life There are many properties or the signs of life that the living organisms have. In the book of biology of Mrtinez and Nazareno‚ there are nine characteristics of life just said and those are : a. Living things are highly organized and contain many complex chemical substances ; b. Living things are
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WP/09/189 What Drives China’s Interbank Market? Nathan Porter and TengTeng Xu © 2009 International Monetary Fund WP/09/189 IMF Working Paper Asia and Pacific Department What Drives China’s Interbank Market? Prepared by Nathan Porter and TengTeng Xu1 Authorized for distribution by Nigel Chalk September 2009 Abstract This Working Paper should not be reported as representing the views of the IMF. The views expressed in this Working Paper are those of the author(s) and do not necessarily
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Physical and chemical ProPerties Physical and Chemical Properties Lab RepoRt assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions‚ diagrams if needed‚ and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing this information in an editable file which can be sent to an instructor. Substance Name Mg Cu Zn
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Purpose: The purpose of this experiment was to test and observe the physical and chemical properties of gases‚ and to use these properties to identify these gases when they are encountered. Procedure: Create a data table similar to that in the lab assistant to record your observations. Gather the following lab equipment: Goggles‚ test tubes‚ 24 well plate‚ Gas assembly with copper and plastic tubing and a #00 stopper‚ short stem pipet‚ rubber stopper #00 with one hole and a pipet tip with
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