Carly Beardshear Mr. Volle September 6‚ 2010 2nd hour Lab Report I. Purpose The purpose of this lab is to investigate gravitational force on acceleration. II. Materials 1. Spark Paper 2. Spark Time 3. 350 Gram Weight 4. Ticker Tape III. Procedure 1. Measure 1 meter of spark paper. 2. Thread paper through spark timer and set timer to 60 Hz. 3. Tape 350 g weight to spark paper. 4. Turn on spark timer. 5. Drop weight from height of a desk (34 in). 6. Record the data.
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LIQUID CRYSTALS Introduction What are Liquid crystals ? Its History & Discovery Any of various liquids in which molecules are regularly arrayed like a solid crystal along one or two dimensions‚ but are free in the other dimensions as with typical liquids. Liquid crystals often display unusual and often manipulable optical properties such as anisotropic scattering. They can be divided into two classes‚ Thermo tropic(nematic‚ chiral nematic‚ and smectic.) and Lyotropic. Transitions to thermotropic
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Chapter 1: Introduction Chapter 1: Introduction Ionic liquids (ILs) can be viewed as a new and remarkable class of solvent. They are also a type of materials that have a long and useful history‚ where the earliest material that meets the current definition of IL was observed in the mid-19th century when a separate liquid phase called the “red oil” was observed in Friedel-Crafts reaction [17]. Over the following years‚ there has been a rapid growing of interest in ILs due to the realization
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lithium soaps and mineral oil. These calcium- and lithium-based greases are widely used. Many other metallic soaps are also useful‚ including those of aluminium‚ sodium‚ and mixtures of them. Such soaps are also used as thickeners to increase the viscosity of oils. In ancient times‚ lubricating greases were made by the addition of lime to olive oil.[3] |Contents | |1 Mechanism of cleansing soaps
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packed closely together‚ but they are able to move around. Hence a fluid does not have a rigid shape‚ but adapts to the contours of the container that holds it. Like a liquid a gas has no fixed shape‚ but it has little resistance to compression because there is enough empty space for the molecules to move closer. Whereas a liquid placed in a container will form a puddle at the bottom of the container‚ a gas will expand to fill the container. Although the three categories seem very well defined
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Liquids & Solids Pre Lab Questions: 3pts 1. What are the learning goals of this lab? The learning goal of this experiment is to view and experience the melting point and boiling point of different substances. 2. Why is acetamide not allowed in contact with your skin? What precautions does one have to take to work with this chemical? Acetamide is a carcinogen‚ which can cause cancer. Therefore‚ it should not be allowed to come in contact with a person’s skin. Any person working with this chemical
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PRE-LAB REPORT Lab: Density of Liquids and Solids Purpose of the experiment: The purpose of this lab is to help understand how to resolve the density of liquids and solids. Also‚ the lab is supposed to teach us how to record lab data and how to measure volume and mass the correct way. Lastly‚ it’s designed to help us understand significant values and its relationship to measurements and data recording. Lab Techniques: One technique that will be used during this lab is comparing the
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Your Marbles to Discover a Liquid’s Viscosity Which Liquid Has the Highest Viscosity? In this project we will determine the viscosities of 5 separate liquids. The liquids we will test are corn syrup‚ honey‚ vegetable oil‚ milk‚ and water. We will find their viscosities by dropping a marble into each of these liquids and measuring the time it takes for it to reach the bottom. Before we conduct the experiment‚ we must first understand what viscosity is. “Viscosity is the quantity that describes a
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Date of Experiment October 7‚ 2012 Report Submitted: October 7‚ 2012 Title: Liquids and Solids Purpose: The purpose of this experiment is to determine the boiling point of liquids and the melting point of solids. Procedure: I got all of my materials together and set up. I poured rubbing alcohol in a beaker and rubber banded it with the thermometer. I logged the last bubble that came out of the capillary tubes. After that I crushed the acetamide and carefully put it in the capillary tube
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Report on the preparation and stability of liquid Paraffin Emulsion Abstract This study describes the preparation of a Liquid Paraffin Emulsion from Paraffin oil‚ Emulsifying agents and Distilled water. This report will also evaluate the stability of the Liquid Paraffin Emulsion depending on how the emulsion is produced and whether using different methods of mixing will produce a more stable Paraffin Emulsion. Introduction An emulsion is a mixture of two or more liquids that are normally not
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