GS 130 Problem Set 9 - Name Section GS 130 Problem Set#9...

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Name: Section: GS 130 Problem Set #9: The Periodic Law & Crystals DUE: April 1, 2008 SHOW ALL YOUR WORK! Qualitative Questions (1) Define the following concepts (10 points) (a) Element: (b) Compound: (c) Molecule: (d) Covalent Bond: (e) Ionic Bond: (2) Please list three characteristics of a metal? (3 points) Periodic Trends (3) For each of the following elements determine whether the element is most likely to gain or lose its outer electrons in a chemical reaction. (4 points) (a) Sulfur (S). (b) Rubidium (Rb). 1
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(c) Antimony (Sb). (d) Barium (Ba). Chemical Compounds and Reactions (4) Complete the following table by providing the appropriate chemical compound's name or formula. (10 points) Name Chemical Formula barium sulfate calcium carbonate calcium phosphate iron (III) hydroxide lead (II) chlorate magnesium silicate potassium sulfide sodium cyanide sodium nitride tin (IV) dioxide Chemical Bonding and Bonding in Crystals (5) (a) Identify the type of chemical bonding in the following compounds as either covalent or ionic. (8 points) Compound Type of Bond CO KI NaBr SO 2 CaF 2 As 2 O 3 Cl 2 AgCl 2
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(b) Crystals are a very special type of solids. Give the definition of a crystal (see p. 358,
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