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Warmup

Warmup. Review the prefixes and suffixes used for naming ionic and molecular compounds. NOVEMBER 16, 2011. Reaction Types, Chemical Equation Practice. Review: Reaction Types. Exothermic: Heat or energy is a product. (Exit) vs. Endothermic: Heat or energy is a reactant. (Enter)

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Warmup

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  1. Warmup Review the prefixes and suffixes used for naming ionic and molecular compounds.

  2. NOVEMBER 16, 2011 Reaction Types, Chemical Equation Practice

  3. Review: Reaction Types • Exothermic: Heat or energy is a product. (Exit) vs. • Endothermic: Heat or energy is a reactant. (Enter) • Synthesis: Using small molecules to build a bigger one. • 6H20 + 6CO2 C6H12O6 + 6O2 • Photosynthesis • Decomposition: Taking apart a bigger molecule. • C2H6 + 5O2 2CO2 + 3H2O • Combustion • Single Replacement: A molecule switches partners with the odd one out. • 2NaCl + F2 2NaF + Cl2 • Electrochemical Reduction/Oxidation aka Redox • Double Replacement: Both molecules switch partners. • MgCl2 + 2NaF  MgF2 + 2NaCl • Precipitation • Neutralization

  4. C2H6 + 5O2 2CO2 + 3H2O + heat is best categorized as: • Synthesis, exo • Synthesis, endo • Decomp, exo • Decomp, endo • Single Rep., exo • Single Rep., endo • Double Rep., exo • Double Rep., endo

  5. 2BF3 + 3Li2SO3 B2(SO3)3 + 6LiF + heat is best categorized as: • Synthesis, exo • Synthesis, endo • Decomp, exo • Decomp, endo • Single Rep., exo • Single Rep., endo • Double Rep., exo • Double Rep., endo

  6. 2SeCl6+ 3O2+ energy  2SeO3+ 6Cl2is best categorized as: • Synthesis, exo • Synthesis, endo • Decomp, exo • Decomp, endo • Single Rep., exo • Single Rep., endo • Double Rep., exo • Double Rep., endo

  7. 8CO + 16H2 + energy  C8H18 + 8H2Ois best categorized as: • Synthesis, exo • Synthesis, endo • Decomp, exo • Decomp, endo • Single Rep., exo • Single Rep., endo • Double Rep., exo • Double Rep., endo

  8. Whiteboard practice • Convert words to symbols, looking up polyatomc ions as needed • Find ionizations • Find molecular stochiometry • Balance the chemical equation • Categorize the chemical equation, if possible 1) Iron and hydrogen sulfate form iron (III) sulfate and molecular hydrogen gas. Things get warmer. 2) Silicon dioxide and hydrogen fluoride create -after a great deal of baking- silicon tetrafluoride and dihydrogenmonoxide. Molecular oxygen may be present as either a reactant or product.

  9. Whiteboard practice • Convert words to symbols, looking up polyatomc ions as needed • Find ionizations • Find molecular stochiometry • Balance the chemical equation • Categorize the chemical equation, if possible 3) Arsenic is added to a sodium hydroxide solution, which creates hydrogen gas bubbles and sodium arsenate paste. 4) Ammonium nitrate is cooked until it breaks down into molecular nitrogen, molecular oxygen, and dihydrogen monoxide. Oxygen may be present as either a reactant or product.

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