Melting Point Determination Identity and Purity of Solid Organic Compounds Objectives • To introduce the technique of melting point determination. • To use the concept of melting points for identification and characterization of organic compounds. • Properly fill and use a capillary melting point tube. • Determine accurate melting point ranges for a wide variety of organic substances. Introduction The melting point of a solid can easily and accurately be determined
Premium Temperature Melting point
Chemical Prperties of Metals Most metals are chemically reactive‚ reacting with oxygen in the air to form oxides over changing timescales (for example iron rusts over years and potassium burns in seconds). The alkali metals react quickest followed by the alkaline earth metals‚ found in the leftmost two groups of the periodic table. Examples: 4Na + O2 → 2Na2O (sodium oxide) 2Ca + O2 → 2CaO (calcium oxide) 4Al + 3O2 → 2Al2O3 (aluminium oxide) The transition metals take much longer to
Premium Metal Periodic table
3. IRON AND STEEL PROCESS 5 4. CORE COMPETENCE 9 5. COMPETITIVE ADVANTAGE 10 6. COMPETITIVE PRIORITIES 11 A Century of Trust INTRODUCTION Tata Steel Limited (NSE: TATASTEEL
Premium Pig iron Steel Iron
Nucor Corporation Introduction Nucor Corporation‚ the largest U.S. mini-mill‚ continues to gain market share in flat roll and strip steel. Recent successful acquisitions‚ application of new technologies‚ prospects for global growth‚ a strong balance sheet‚ as well as improved economic outlook for the steel industry‚ make Nucor an attractive buy with a near term stock price target of $65 to $70. Background Nucor Corporation (NUE) was founded by auto manufacturer Ranson E. Olds. Through a
Premium Steel
TOPIC 2 Metals The History of Metals * Uses of metals through history: * Copper Age (3200-2300 BCE) – copper and tin were most common metals‚ and were used for ornaments‚ weapons and tools. * Bronze Age (2300-700 BCE) – copper‚ tin and bronze were used for tools‚ weapons and transport. They produced bronze by heating copper and tin with charcoal. * Iron Age (1000 BCE – 1 CE) – iron steel and lead was used for tools‚ weapons and pipes. Iron is much harder than bronze.
Premium Copper Periodic table Metal
Investigation: Developing an Activity Series for Metal Copper (II)‚ Magnesium and Nickel Tong Wu Question: “What is the effect of solution type and metal type on metal reactivity as measured by whether a chemical reaction has taken place? ” Prediction: *Using metal magnesium as an example illustration I. (Magnesium reacts with lead (II) nitrate) Mg + Pb(NO3)2 Pb + Mg(NO3)2 II. (Magnesium reacts with zinc nitrate) Mg + Zn(NO3)2 Zn + Mg(NO3)2 III. (Magnesium reacts with
Premium Chemistry Oxygen Iron
Our client has an immediate need for an Sheet Metal Fabrication Programmer Job Duties are: -Analyzes part of drawings‚ specifications‚ and design data. -Works from written specifications‚ blueprints‚ and/or shop drawings to write CNC programs of machine instructions through the use of a computer. -Will create‚ maintain‚ and troubleshoot programs for AMADA turret/punch press and laser cutting machines. -Will setup and operate machines when not programming. -Will field operator comments‚ questions
Premium Computer Numerical control Computer program
The Melting Pot Is The United States of America the “melting pot” of the world? A melting pot is “a place where races‚ theories‚ etc.‚ are mixed.” (The Oxford Dictionary) Many immigrants come to the United States for the same basic reason: A better way of life. These same immigrants envision their dreams of success‚ freedom and happiness coming true. Without different cultures coming together learning from one another‚ many of today’s modern marvels would not exist. A good example of this is
Premium United States
Corrosion of Metals Introduction Have you ever had a bike that went rusty‚ figure 1? If the paint is scratched and the rust allowed to spread‚ it is very difficult to repair the frame so it looks as good as new again. Rusting costs us millions of pounds each year‚ either through replacing things or through trying to prevent it happening in the first place. Figure 1: Bike rusting. In this booklet you learn about rusting and ways of stopping it‚ followed by a look at another metal‚ aluminium that
Premium Oxygen Corrosion Aluminium
A metal is defined as an opaque shiny element which possesses properties such as malleability and ductility. Malleable meaning that they can be hammered into shapes and ductile meaning they can be drawn into wires. They are also very strong and posses high tensile strength and are good conductors of heat and electricity. Metals are shiny‚ and also have high densities. Metals are a very important and significant part of chemistry. However‚ their importance is not just limited to chemistry; they are
Premium Aluminium