Chapter 3 complete with calorimetry

Chapter 3 complete with calorimetry - Lecture 8: Periodic...

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Lecture 8: Periodic Table and the Atom Goal: Be able to name elements and identify their correct symbol. Use the periodic table to identify the group and period of an element. Be able to assign an element as a metal, nonmetal or metalloid. Describe the components of the atom. Outline (Timberlake Chapter 3.1-3.5): Elements and Symbols (3.1) The Periodic Table (3.2) The Atom (3.3) Atomic Number and Mass Number (3.4) Isotopes and Atomic Mass (3.5) Problems for Extra Practice: 3.1, 3.3, 3.5, 3.7, 3.9, 3.11, 3.13, 3.15, 3.19, 3.23, 3.25, 3.27, 3.29, 3.31, 3.33, 3.35, 3.38, 3.39
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Elements are • pure substances that cannot be separated into simpler substances by ordinary laboratory processes • the building blocks of matter gold carbon aluminum Elements
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A symbol represents the name of an element consists of 1 or 2 letters starts with a capital letter (No vs. NO) Examples: 1-Letter Symbols 2-Letter Symbols C carbon Co cobalt N nitrogen Ca calcium F fluorine Al aluminum Symbols of Elements http://elements.vanderkrogt.net/chemical_symbols.php
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Some symbols are derived from Latin names, as shown below. Some elements are named for planets, mythological figures, minerals, colors, scientists, and places. Sources of Element Names Cu, copper (cuprum) Au, gold (aurum) Ag, silver (argentum) Fe, iron (ferrum) Es, einsteinium Np, neptunium Cf, californium Rh, rhodium http://www.ptable.com/
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Some Common Elements
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Select the correct symbol for each of the following: A. Calcium 1) C 2) Ca 3) CA B. Sulfur 1) S 2) Sl 3) Su C. Iron 1) Ir 2) FE 3) Fe Learning Check
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Select the correct name for each symbol. A. N 1) neon 2) nitrogen 3) nickel B. P 1) potassium 2) phlogiston 3) phosphorus C. Ag 1) silver 2) agean 3) gold Learning Check
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The Periodic Table • Dmitri Mendeleev created first periodic table in 1862 (60 elements known) – Arranged in groups with similar properties – Order of increasing mass – Was able to predict properties of yet undiscovered elements
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The Periodic Table
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Groups and Periods On the periodic table Groups contain elements with similar properties and are arranged in vertical columns. Periods are the horizontal rows of elements.
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Group Numbers Group Numbers Use numbers 1–18 to identify the columns from left to right. Use the letter A for the representative elements (1A to 8A) and the letter B for the transition elements.
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Representative Elements • Several groups of representative elements are known by common names. Group 1A(1), the alkali metals , includes lithium, sodium, and potassium. Group 7A(17), the halogens , includes chlorine, bromine, and iodine.
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A. Group 7A(17), Period 4 1) Br 2) Cl 3) Mn B. Group 2A(2), Period 3 1) beryllium 2) magnesium 3) boron C. Group 5A(15), Period 2 1) phosphorus 2) arsenic 3) nitrogen Learning Check
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This note was uploaded on 01/18/2012 for the course CHEM 120A taught by Professor Leahmiller during the Fall '11 term at University of Washington.

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Chapter 3 complete with calorimetry - Lecture 8: Periodic...

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