Blake Lecture 9-5-08

Blake Lecture 9-5-08 - + • Combination of a stable anion...

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Nomenclature Ionic Compounds Polyatomic ions Acids Which have the same charge? 1. A sodium atom and an electron 2. A proton and a sodium atom 3. A sodium atom and a neutron – ANSWER (Atom = neutral, Ion = +1) 4. A beta particle and a proton Alpha Particle = 4 2 He Helium Beta Particle = -1 0 B Electron Gamma Particle = 0 0 y What is the likely charge on S in its ionic compounds? 1. +6 2. +4 3. +2 4. 0 5. -2 – ANSWER 6. -4 7. -6 Stuff to Know Element: Defined by the number of protons in the nucleus Mixture: Can have variable composition. Description would include multiple formulas Pure substance: Has a single chemical formula for its description Solution: A homogenous mixture (Air) What is the formula for magnesium nitride? 1. MgN 2. MgN 2 3. Mg 2 N 3 4. Mg 3 N 2 – ANSWER (N is a 3- and Mg is a 2+) Naming compounds and ions
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Polyatomic anions-memorize the “ates” -XO q n (Ox anions) (Hypochlorite ClO - )(Chlorite ClO 2 - )(Discovered Chlorate ClO 3 ) (Perchlorate ClO 4 - ) Acids: Can release an H
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Unformatted text preview: + • Combination of a stable anion and H +-ClO-(Hypochlorite ), HOCl (Hypochlorous acid ), ClO 2-(Chlorite), HClO 2 (Chlorous Acid), ClO 3-(Chlorate), HClO 3 (Chloric acid), ClO 4-(Perchlorate), HClO 4 (Perchloric Acid), Cl-(Chloride), & HCl (Hydrochloric acid) MOST OF THE ONES ABOVE ARE IN AQUEOUS SOLUTION Type I Salts • The metal can only have one stable charge (Group I Metals are a +1, Group 2 Metals are a +2, Ag + , Zn 2+ , Al +3 , Sc +3 ) • Calcium Chloride = CaCl 2 Type II Salts • The metal can have different charges in different compounds • Pb + Cl 2 = PbCl 2 (Lead II Chloride) & PbCl 4 (Lead IV Chloride) • Stock = Roman Numerals if not a Type I Metal Molecular Compounds • Combination of two non-metals • SiCl 4 (Silicon Tetrachloride) • N 2 O 3 (Dinitrogen Trioxide) • Mono, di, tri, tetra, penta, hexa, hepta, octa, nona, deca...
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This note was uploaded on 03/22/2011 for the course CHEMISTRY 1307 taught by Professor Tamarahanna during the Spring '09 term at Texas Tech.

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Blake Lecture 9-5-08 - + • Combination of a stable anion...

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