Element Project: Vanadium Element Project: Vanadium Vanadium is a very interesting and useful element. It is solid at room temperature and in its pure state it is a grayish silvery metal. It is soft and ductile and it has good corrosion resistance to alkalis‚ sulphuric acid‚ hydrochloric acid‚ and salt waters. Its element symbol is V and its atomic number is 23. On the periodic table it is in group 5 and in period 4. Its atomic mass is 50.9415‚ and the history
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Exercise 5 Comparing the Reaction Rates of Alkanes and Alkenes Group # 4 Members: Pangan‚ Sam Margarette Perales‚ Angelica Ibay‚ Sophia Irigan‚ Sharien May Sorensen‚ John Antonio Ocan‚ Emmanuel Submitted to: Ms. Ginalyn Cuenca Mr. Neil Abreo Date: December 6‚ 2012 Introduction Alkanes are hydrocarbons with only single bonds between the atoms. Saturated hydrocarbon is the other term for it. They are used as fuels because they are non-reactive and also do not conduct electricity
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Chapter 1: Intermolecular Forces: Liquids‚ Solids‚ and Phase Changes Chem 11: General Chemistry 2 Topics 1.1 An Overview of Physical States and Phase Changes 1.2 Quantitative Aspects of Phase Changes 1.3 Types of Intermolecular Forces 1.4 Properties of the Liquid State 1.5 Uniqueness of Water 1.6 The Solid State: Structure‚ Properties and Bonding A hot spring on a snowy day The Kinetic Molecular View of the Three States The characteristic properties of gases‚ liquids
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V. Kumar Dean Sri Chaitanya Educational Institutions Hyderabad Chemistry - Ist year Chapter-wise Weightage of Marks Name of the Chapter Atomic Structure Periodic classification of elements Chemical bonding States of matter Stoichiometry Hydrogen and its compounds IA and IIA groups IIIA group IVA group Noble gases Environmental chemistry Organic chemistry Marks Weightage 8 8 8 6 6 6 6 4 4 4 4 12 Type of Questions 1 LAQ (or) 2 SAQ (or) 1 SAQ & 2VSAQ 1 LAQ (or) 1 SAQ & 2 VSAQ 1 LAQ (or) 1 SAQ &
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The Element Fluorine Fluorine is an element that appears in the periodic table. It is apart from the halogen series. It appears in group 17 and period 2. It is important to understand its structure ‚physical ‚ and chemical properties. Fluorine is the 13th most abundant element on earth and is very important to earth today. Fluorines mysterious structure reacts vigorously with itself and other elements making things that impacted our technology‚ history‚ and daily lives. Fluorine is the chemical
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Chem 16 Notes UPD Should only be a supplement to discussions Table of Contents* [A] Lecture [1] Thermodynamics [2]Energy [3]Enthalpy [4]Hess’s Law [5]Determining Enthalpy [6]Heat Capacity [7]Calorimetry [8] Entropy [9] Gibb’s Free Energy [10] Waves [11] Quantum Theory [12] Quantum Numbers [13] Electron Configuration [14] Periodic Table [15] Periodic Trends KSev [16] Chemical Bonding [17] Formal Charge [18] Resonance Structure [19] Bonds [20] VSEPR [22] Valence Bond Theory [22] Molecular Orbital
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Lab 3: Solubility of Organic Compounds Objectives: Understanding the relative solubility of organic compounds in various solvents. Exploration of the effect of polar groups on a nonpolar hydrocarbon skeleton. Introduction: The solubility of a solute (a dissolved substance) in a solvent (the dissolving medium) is the most important chemical principle underlying three major techniques you will study in the organic chemistry laboratory: crystallization‚ extraction‚ and chromatography.
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Name: ____________________________ CHEM 420 Exam 1 Fall 2013 Dr. David Hodapp Read and sign the CRC Honor Code on the next page before starting the exam. Answer all essay questions using complete sentences and proper spelling‚ punctuation‚ and grammar. Points Multiple Choice 34 Matching 12 Fill-In 14 Problems/Essay Questions 90 Total 150 o G = -RT(lnK ) = -2.303RT(log K ) 10 eq k r Ae eq Ea / RT 1 Cosumnes River College Honor Code*
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Chem 170 Exam 2 Review Chapters 5‚ 11-13 Instructions: You are allowed to use a scientific calculator to perform mathematical operations. Please silence and put away all cell phones and pagers! Part I. This section is multiple-choice. Fill in the letter corresponding to the best answer on your Scantron form #882. 1. The __________ and __________ contribute most to the mass of an atom‚ while the _____________ determines the atom’s chemical behavior. A. B. C. D. E. proton‚ neutron‚ electron proton
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transition metals (purple) • Left Side of PT table loses electrons‚ right side gains them. • Covalent bonds formed between different elements are polar. • In a molecule with covalent bonding‚ atoms are held together by sharing electrons. • Electronegativity (EN) measures the tendency of an atom to attract electrons (increases as you move to the right) • Greater than 1.8 = Ionic‚ Between 0 and 1.8 = Polar Covalent‚ ~0 = Nonpolar covalent • Moles = Mole * (Number of electrons in element/ 1 mole)
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