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Quiz: Feb 3, 2005

Write the names and formulas for the ionic compounds formed by these ions: calcium and oxide magnesium and sulfide Al 3+ and P 3- aluminum and phosphate magnesium and phosphate. calcium oxide = CaO magnesium sulfide = MgS aluminum phosphide = AlP aluminum phosphate = AlPO 4

daniel-mullen
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Quiz: Feb 3, 2005

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  1. Write the names and formulas for the ionic compounds formed by these ions: calcium and oxide magnesium and sulfide Al3+ and P3- aluminum and phosphate magnesium and phosphate calcium oxide = CaO magnesium sulfide = MgS aluminum phosphide = AlP aluminum phosphate = AlPO4 magnesium phosphate= Mg3(PO4)2 Quiz: Feb 3, 2005 phosphide = P3- sulfide = S2- “At age 58, Banneker began the study of astronomy and was soon predicting future solar and lunar eclipses. He compiled the ephemeris, or information table, for annual almanacs that were published for the years 1792 through 1797. "Benjamin Banneker's Almanac" was a top seller from Pennsylvania to Virginia and even into Kentucky.” http://www.progress.org/banneker/bb.html

  2. Na1+ K1+ Mg2+ Be2+ Sr2+ Cu1+ Zn2+ Ca2+ NH41+ NaF K2CO3 MgCl2 2- O C O O Balancing formulas from Worksheet Questions K+ K+ F1- CO32- Cl1- OH1- S2- S2- I1- PO43- I1-

  3. Na1+ K1+ Mg2+ Be2+ Sr2+ Cu1+ Zn2+ Ca2+ NH41+ NaF K2CO3 MgCl2 Be(OH)2 SrS Cu2S ZnI2 H H K+ O K+ O Balancing formulas from Worksheet Questions F1- CO32- Cl1- OH1- S2- S2- I1- PO43- I1- Be

  4. Na1+ K1+ Mg2+ Be2+ Sr2+ Cu1+ Zn2+ Ca2+ NH41+ NaF K2CO3 MgCl2 Be(OH)2 SrS Cu2S ZnI2 Ca3(PO4)2 NH4I 3- 3- O O O O P P O O O O F1- CO32- Cl1- OH1- S2- S2- I1- PO43- I1- Ca2+ Ca2+ Ca2+

  5. 1+ 2+ 1- 2- Oxidation number • The charge on a monatomic ion is called the oxidation number. • An ion with more than one atom, has a different oxidation number on each atom, so the sum of the oxidation numbers equals the charge of the ion. • Nonmetals often have more than one oxidation state (number). • Transition metals may have more than one oxidation state (number). • Table 7.3 lists some common oxidation numbers .

  6. To name covalent compounds • Covalent compounds are composed of two or more nonmetals which share electrons. (Some metalloids are covalently bonded as well). • USE PREFIXES mono = 1 penta = 5 di = 2 hexa = 6 tri = 3 hepta = 7 tetra = 4 octa = 8

  7. Naming covalent compounds mono = 1 penta = 5 di = 2 hexa = 6 tri = 3 hepta = 7 tetra = 4 octa = 8 • CO2 • CO • P2O5 http://misterguch.brinkster.net/covalentcompounds.html click above for more information about covalent compounds • carbon dioxide • carbon monoxide • diphosphorous pentoxide Try SF6 sulfur hexafluoride prefix of less electronegative atom (n ≠ 1), prefix of second atom– ending ide

  8. NaF • K2CO3 • MgCl2 • Be(OH)2 • SrS • Cu2S • ZnI2 • Ca3(PO4)2 • NH4I • Mn(NO3)3 • FePO4 • CoCO3 Answers. • sodium fluoride • potassium carbonate • magnesium chloride • beryllium hydroxide • strontium sulfide • copper (I) sulfide • zinc iodide • calcium phosphate • ammonium iodide • manganese (III) nitrate • iron (III) phosphate • cobalt (II) carbonate

  9. Writing Formulas potassium fluoride ammonium sulfate magnesium iodide copper (II) sulfite …. K+ and F- K F NH4+ and SO42- (NH4)2SO4 Mg I2 Mg2+ and I 1- Cu2+ and SO32- CuSO3

  10. O 3- O P O O 1- N O O C N N O O 1- 1- O O O O C C 1- 1- O O H H AlPO4 Ag1+ • Aluminum phosphate • lead (II) nitrite • cobalt (II) selenide • silver cyanide • copper II bicarbonate Al3+ Pb(NO3)2 Pb2+ CoSe Cu2+ AgCN Cu(HCO3)2

  11. Naming covalent compounds SbBr3 • antimony tribromide • hexaboron (mono)silicide • chlorine dioxide • iodine pentafluoride • …. B6Si ClO2 I F5 more examples

  12. P4S5 O2 SeF6 Si2Br6 SCl4 … tetraphosphorous pentasulfide oxygen selenium hexafluoride disilicon hexabromide sulfur tetra chloride Writing Formulas for covalent compounds CH4 methane, is an exception because it is an ORGANIC compound.

  13. Naming Organic Compounds meth = 1 eth = 2 prop = 3 but = 4 pent = 5 hex = 6 hept = 7 oct = 8 non = 9 … • Organic compounds have one or more carbons, surrounded with hydrogens. • They may have double or triple bonds, and may include oxygen, or other atoms. • They are named by counting the “carbon backbone” and applying a prefix • “Functional Groups” provide the rest of the name.

  14. Naming Organic Compounds meth = 1 eth = 2 prop = 3 but = 4 pent = 5 hex = 6 hept = 7 oct = 8 non = 9 … • Butane = 4 carbons • CH3CH2CH2CH3 • Heptane = 7 carbons • CH3CH2CH2CH2CH2CH2CH3 • Octane = 8 carbons • CH3CH2CH2CH2CH2CH2CH2CH3

  15. 13 c page 178 6 hydrogen atoms 3 carbon atoms

  16. 13 f page 178 6 carbon atoms 12 hydrogen atoms http://jchemed.chem.wisc.edu/JCESoft/CCA/CCA5/MAIN/1ORGANIC/ORG02/TRAM02/E/NOMOVIE/MISC.HTM

  17. Molecular and Empirical Formulas. • Molecular: adj. Pertaining to, consisting of, caused by, or existing between molecules. • Empirical: adj. 1. Relying upon or derived from observation or experiment. 2. Guided by practical experience and not theory, especially in medicine. • Formula: n 1. an established form of words for use in a ceremony or procedure. 3. Chemistry: a. a symbolic representation of the composition or of the composition and structure of a chemical compound. b. The chemical compound so represented. c. A prescription in exact proportion: recipe.

  18. C6H12O6 H2O2 CH2O HO Molecular and Empirical Formulas

  19. Coefficients: How many sets of a particular compound/element • 2 C6H12

  20. Coefficients: How many sets of a particular compound/element • 5 C6H12

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