is dominated by three factors. 1. Carbon forms unusually strong C-C single bonds‚ C=C double bonds‚ and carbon-carbon triple bonds. 2. The electronegativity of carbon (EN = 2.55) is too small to allow carbon to form C4- ions with most metals and too large for carbon to form C4+ ions when it reacts with nonmetals. Carbon therefore forms covalent bonds with many other elements. 3. Carbon forms strong double and triple bonds with a number of other nonmetals‚ including N‚ O‚ P‚ and S. Elemental Forms
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The Inhumane Weapons of Warfare Chemical warfare is a barbaric weapon of war that should be banned from any war situation. Chemical Warfare is using any chemical or chemical mix that can physically or mentally harm a human being. It has been killing people for over 2600 years and was created by Spartans. “They grabbed burning sulfur pitch and threw it over the walls of Athens attempting to fill the city with toxic gas.”[6] They tried this because they had a small army that was trying to take over
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The type of college that offers the major of chemical health is environmental health engineering colleges. Some schools that offer chemical health are Northcentral University‚ Stanford University‚ Kaplan University‚ University of Notre Dame and many other universities. The requirements that you need to go to a chemical health schools is four years of English‚ four years of years of math which includes one unit of algebra one and two and geometry or the equivalence. You need to have three
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research the chemistry behind a chemical reaction that is used in automobiles. Write a page that explains what the reaction is‚ where it occurs in the car‚ and what it does for the car. There are over one billion of cars around the world‚ getting people where they want to go. Therefore‚ automobile transportation became much more important in everyone’s daily life. Chemistry made the automobiles to work. The chemistry and chemical reactions used in many parts of the automobiles. The role of chemistry
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properties/structure‚ how it works‚ hybridization/bond angles‚ and effects of dipole moment. Ibuprofen (C13H18O2) has the systematic name 2-(4-isobutylphenyl)propanoic acid‚ making it an organic compound in the class of propionic acid derivatives. Its melting point is 74 - 77° C. It is a stable white crystalline powder‚ slightly soluble in water and very soluble in ethanol. Its formula is also written (CH3)2CHCH2C6H4CH(CH3)COOH‚ which lays out the chemical structure of ibuprofen. Ibuprofen is a chiral
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Chemical Reactions I. Purpose – The purpose of this lab was to observe different type of chemical reactions to write and balance chemical equations. II. Hypothesis: If you mix two chemicals together‚ then they will change color and/or bubble/fix. III. Procedure - Workstation 1: 1. Light the Bunsen Burner 2. Add 5 – 8 mL of HCL to a test tube that’s in the test tube rack 3. Drop a 2 – cm piece of Mg ribbon into the test tube 4. Record Observations 5. Clean Workstation
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Class X Question 1: Chapter 1 – Chemical Reactions and Equations Science Why should a magnesium ribbon be cleaned before burning in air? Answer Magnesium is very reactive metal. When stored it reacts with oxygen to form a layer magnesium oxide on its surface. This layer of magnesium oxide is quite stable and prevents further reaction of magnesium with oxygen. The magnesium ribbon is cleaned by sand paper to remove this layer so that the underlying metal can be exposed into air. Question
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Nebraska-Lincoln Matthew Lukeman Acadia University Copyright © 2014 Pearson Canada Inc. Slide 10-1 Q1: PCl3 is an industrial chemical used in many herbicides and insecticides. What is the molecular shape of PCl3? 1A) bent 2B) tetrahedral 3C) trigonal pyramidal 4D) T-shaped 5E) trigonal planar Copyright © 2014 Pearson Canada Inc. Slide 10-2 Q2: What is the approximate angle of the O─C─O bond in the citric acid molecule below? O O OH OH HO 1A) 120° 2B) 109.5° 3C) slightly smaller than 120° 4D) slightly
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1. Everything is made of chemicals. You are made of chemicals. So is your dog. So is your desk. So is the sun. Drugs are chemicals. Food is made from chemicals. 2. Many of the changes you observe in the world around you are caused by chemical reactions. Examples include changing colors of leaves‚ cooking food and getting clean. 3. Knowing some chemistry can help you make day to day decisions that affect your life. Can I mix these household chemicals? What are safe mosquito repellents? Will
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Department of Chemistry Physical and Chemical Properties Submitted by: Date Submitted: 2/2/2014 Date Performed: 1 Lab Section: Course Instructor: PURPOSE: To identify chemical and physical change in matter. PROCEDURE: Finding out the physical and chemical change in matter. There was seven different substances that were being tested; Mossy Zinc (Zn)‚ Magnesium (Mn)‚ Copper (Cu)‚ Magnesium Oxide (MgO)‚ Copper II Nitrate (Cu(NO3)2)‚ Copper II Carbonate (CuCO3) and Sodium Chloride
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