Carbon nanotubes Bond polarity and intermolecular forces • Electronegativity and bond polarity • Van der Waals’ forces • Factors affecting the strength of van der Waals’ forces • Hydrogen bonding • Surface tension and viscosity of liquids Topic 6 Microscopic World II Unit 23 Shapes of molecules Unit 23 23.1 23.2 23.3 23.4 23.5 23.6 23.7 Shapes of molecules Covalent molecules with non-octet structures Shapes of molecules of methane
Premium Atom Oxygen Molecule
double bond among the carbon atoms‚ the fatty acid molecule is unsaturated. What form does each of these fats take at room temperature and what are the common sources of each? Saturated fats are solid at room temperature and unsaturated fats are liquid at room temperature. A common source of saturated fat is tallow‚ lard‚ and butter. Common sources of unsaturated fat are canola oil‚ corn oil cottonseed oil‚ and soybean oil. What is your hypothesis? I believe that we will extract less saturated
Premium Fatty acid Fat Saturated fat
Emerson Flow and Density Measurement Best-in-class technology for outstanding results Emerson Flow and Density Measurement Technology Committed to Your Success Emerson’s best-in-class Micro Motion® and Rosemount® flow and density measurement technologies‚ wide breadth of products‚ and unmatched value ensure you will realize outstanding results in your process and operation. Technology Leadership Decades of application experience ensure Emerson truly understands customer measurement challenges
Premium Measurement Fluid dynamics Mass flow meter
early “cooking” methods‚ modern separation involves piping oil through hot furnaces. The resulting liquids and vapors are discharged into distillation towers‚ tall‚ narrow columns that give refineries their distinctive skylines. Inside these towers‚ the liquids and vapors separate into components or fractions according to weight and boiling point. The lightest fractions‚ including gasoline and liquid petroleum gas (LPG)‚ vaporize and rise to
Premium Petroleum
coverage Relative humidity in the pressroom Ink film thickness Problems caused by ink drying too fast Can cause problems with gravure and flexo Ink viscosity and the factors affect the viscosity The ability to resist flow Affected by temperature and agitation Thixotropic property of paste ink? Viscosity decreases with shearing and agitation Viscosity increases when shearing and agitation stopped Ink tack and the problem caused by high ink tack on printing The
Free Printing
Ruan Solid Molecules are tighly packed and harder than liquids and gases. Examples: Ice‚ Coal‚ Salt Amorphous solid-a solid which has a disordered atomic structure. Examples: Glass‚ Rubber Liquids flowing freely but of constant volume. Examples: Water‚ Mercury‚ Alcohol Viscosity-a measure of its resistance to gradual deformation by shear stress or tensile stress. Surface tension-the force that acts on the surface of a liquid and tends to minimize the surface area. Surface tension can
Premium Solution Temperature Liquid
EMULSION An emulsion is a mixture of two or more liquids that are normally immiscible ( non mixable). Emulsions are part of a more general class of two-phase systems of matter called colloids. Although the terms colloid and emulsion are sometimes used interchangeably‚ emulsion should be used when both the dispersed and the continuous phase are liquids. In an emulsion‚ one liquid (the dispersed phase) is dispersed in the other (the continuous phase). Examples of emulsions include milk‚ mayonnaise
Premium
Volcanoes Have Different Characteristics? A. Formation of Lava Magma is formed by melting preexisting rock in Earth’s interior For magma to rise through crust it must be: (1)less dense than the crust (2) runny enough to flow (3) hot enough to stay liquid Magma that cools to form solid rock = lava B. Composition of Magma/Lava Magma is composed of various proportions of: Oxygen‚ Silicon‚ Aluminum‚ Iron‚ Calcium and Potassium Mineral – naturally occurring element or compound that has an ordered internal
Premium Volcano Lava Basalt
Claire Drexler P2 Characteristics Used To Identify a Substance 1. We use chemical and physical properties to identify a substance. 2. Examples of physical properties: color‚ smell‚ freezing point‚ and viscosity 3. Examples of chemical properties: heat of combustion‚ PH‚ and electromotive force Physical Properties vs. Chemical Properties 1. Examples of physical properties: density‚ luster‚ and conductivity 2. Examples of chemical properties: reactivity with water‚ PH‚ and heat of combustion
Premium Chemistry Mixture Chemical substance
the oil has left. Oil’s function is to lubricate‚ clean‚ and cool the engine. Additives are added to the oil to enhance those functions.Viscosity: Technically‚ viscosity is defined as resistance to flow. Commonly though‚ we think of it as an oil’s thickness. To be more specific‚ it is the thickness of an oil at a given temperature.The viscosity of an oil could be reported at any temperature‚ but to standardize things‚ most laboratories report either a low temp (100F or 40C) or a high temp (210F or 100C)
Premium Lubricant Petroleum