Review - Stoichiometry Mass relationships within compounds...

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Unformatted text preview: Stoichiometry Mass relationships within compounds and between compounds as they undergo chemical change Types of Elements: Metals Nonmetals Noble Gases I. Types of Compounds Chemical Formulas Nonmetals to Nonmetals covalent bonding Molecule Cluster of atoms, held together by covalent bonds - the fundamental unit of a molecular compound Molecular Formula- Inventories the actual number of atoms of each element within a molecule If intramolecular covalent bonds are broken, a chemical reaction occurs H 2 O A. Molecular Compounds NH 3 C 10 H 8 P 4 O 10 C 6 H 6 C 9 H 7 O 4 C 2 H 6 O 2 C 2 H 6 O O 2 Metals to Nonmetals Electrostatic Bonding Ionic Formula Empirical Gives the simplest whole-number ratio of ions within a crystal, i.e., the simplest formula unit of ionsNo Molecules! NaCl NaCl One Na + per one Cl B. Ionic Compounds The great stability of ionic crystal lattice a driving force for the formation of ionic compounds NaCl Ca(NO 3 ) 2 Na 2 SO 4 BaCl 2 Ba 3 (PO 4 ) 2 Na 3 N Three Na + per one N 3 K 2 S Two K + per one S 2 KNO 3 One K + per one NO 3 CaF 2 One Ca 2+ per two F Cl 2 (g) Na (s) NaCl (s) 2Na (s) + Cl 2 (g) 2NaCl (s) 2Mg (s) + O 2 (g) 2MgO (s) 12...
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Review - Stoichiometry Mass relationships within compounds...

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