Alloy - An alloy is a substance made by melting two or more elements together‚ at least one of them a metal. An Example: Examples of alloys include brass‚ bronze‚ 14k gold‚ and sterling silver. covalent bond - A covalent bond is a chemical link between two atoms in which electrons are shared between them. An Example: There is covalent between the oxygen and each hydrogen in (H 2 O). Each of the bonds contains two electrons - one from a hydrogen atom and one from the oxygen atom. Both atoms
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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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Rate of Evaporation of Different Liquids Objective of the Project This project is of the rate of evaporation of different liquid‚ in which we also discuss the factors which affect the rate of liquid. Introduction When liquid is placed in an open vessel. It slowly escapes into gaseous phase ventually leaving the vessel empty. This phenomenon is known as vaporization or evaporation. Evaporation of liquids can be explained in the terms of kinetic molecular model although there
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Calculating the Density of Liquids II. Purpose/Background: The purpose if this lab was to determine the density of water and an unknown liquid. Density is defined as the mass of a substance divided by its volume. It is an intrinsive property of matter and is used to specifically characterize substances. III. Procedure: 1.We massed an empty 10mL graduated cylinder to the nearest .01g. 2.Then‚ we filled the graduated cylinder with 4.0-5.0 mL of distilled water‚ 3.massed it to the nearest 0.1
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How Does Liquid Crystal Display Television Works? Submitted to: Prof. Rico Bien Simon Oxales Submitted by: Manalon‚ Angelo Ocaya‚ Angelou Ortiz‚ Joel Partos‚ Mhar Angelo Ravena‚ Rosemarie How Does Liquid Crystal Display Television Works? 1. What are the Basics of Liquid Crystal Display? 2.1. Where does LCD display rely? 2.2. What is the purpose of liquid crystals? 2.3. What makes up the apparent color of each pixel on the screen? 2. What is Addressing?
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9.1 Orbitals and Theories of Chemical Bonding 1. Which one of the statements concerning valence bond (VB) and molecular orbital (MO) bond theories is correct? a) MO theory predicts that electrons are localized between pairs of atoms. b) In VB theory‚ bonding electrons are delocalized over the molecule. c) MO theory accurately describes bonding in O2 and NO‚ VB theory does not. d) VB theory can describe molecular bonding in excited states. e) MO theory is used to accurately predict
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CHAPTER I INTRODUCTION Pollution is one of the main problems the world faces today. One of the reasons is the overload of non-biodegradable objects like plastics‚ cans and Styrofoam. The invention of plastics and Styrofoam made a huge change in our society and it helped us in many ways. But it is also one of the main pollutants that destroy our planet. Because of these we devised a way to recycle used Styrofoam‚ and this is to make glue out of it. This glue can help reduce the number of Styrofoam
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product but I can’t sell it” she said. “I am in the process of reviewing our approach of taking this product to market‚ but at this point I am not convinced we have a better alternative”. Macey was also responsible for the marketing of Kathon 886 MW‚ a liquid biocide used in large metalworking fluid tanks (above 1.000-gallon capacity). Kathon 886 MW was a powerful biocide‚ and very small quantities were sufficient to treat large tanks. Because of its low-use level‚ Kathon 886MW was not suitable for smaller-capacity
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LABORATORY REPORT UNIT OPERATION FST359 EXPERIMENT 1 : LIQUID-LIQUID SEPARATION BY DISC-BOWL CENTRIFUGE. NAME : ANAS BIN MOHD KAMAL. ID : 2013467978. GROUP : AS1164A1. LECTURER : SIR MOHAMAD SHAHRIMI BIN HASHIM. OBJECTIVE : 1. To separate cream from dairy milk and coconut milk. 2. To measure the quantity and density of cream and skim milk. MATERIALS : Dairy milk powder and coconut milk. APPARATUS : 25 ml specific gravity (SG) bottles
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its unaltered form‚ polystyrene is rigid and translucent. A blowing agent transforms molten polystyrene into Styrofoam through the construction of a porous cellular structure. The organic compound (CH3)2CO‚ or acetone‚ is a translucent flammable liquid that exhibits a high degree of solvency. Many compounds are soluble when exposed to acetone. A Styrofoam and acetone experiment can determine if Styrofoam will dissolve when placed inside a container of acetone. Starch is the major component of
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