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TYPES OF CHEMICAL REACTIONS
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TYPES OF CHEMICAL REACTIONS

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TEMA PARA LA MATERIA DE QUÍMICA...t/t

TEMA PARA LA MATERIA DE QUÍMICA...t/t

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  • 1. Types of ChemicalReactionsQBA Miguel A. Castro Ramírez
  • 2. Objectives For this LessonAfter this lesson you should be able to:1. Classify a chemical reaction as composition, decomposition, single replacement, or combustion.2. Predict the products of simple composition and decomposition reactions.
  • 3. Objectives cont.3. Use the activity series of metals to produce the products of single replacement reactions.4. Write the products of the double replacement reaction between two ionic compounds.
  • 4. 5 Types of Reactions• Composition (synthesis)• Decomposition• Single Replacement• Double Replacement• Combustion
  • 5. Composition (synthesis) Reactions• Two or more substances react to form a single substance.• These reactions usually result in the release of energy. A+B AB O S + O O S O
  • 6. Your Turn• Write a balanced chemical equation for the reaction of: – solid aluminum with sulfur. – Water and dinitrogen pentoxide.
  • 7. Decomposition Reactions• A single substance is broken down into two or more substances. AB A+B OCa C O O Ca O + O C O
  • 8. Try These• Write a balanced chemical equation for the decomposition of: – Aluminum oxide.
  • 9. Single Replacement Reactions• One element displaces another element from a compound in a single replacement reaction. A+ BX AX+B O O Cu FeFe + O SO O O SO O + Cu
  • 10. Activity Series • Whether an element will replaceanother depends upon how active theelements are. A more active element will replace a less active element. • See your activity chart to determine which elements are more active than others.
  • 11. Solving Single Replacement Reactions• Determine what is being replaced, the metals or nonmetals.• Look up the elements on your activity series chart, to see if the reaction will take place.• Write the complete skeleton equation, and balance it.
  • 12. Your Turn• Write balanced chemical equations for the reaction of: – Potassium and Zinc Chloride. – Chlorine and Hydrofluoric acid. – Iron and Sodium phosphate. – Fluorine and hydrochloric acid.
  • 13. Double ReplacementReactions• Two ionic compounds exchange cations and anions.• Hint: “outsides combine, insides combine”.AX+BY AY+BX
  • 14. Ag O K O NO + Cl Ag K O Cl + O NO
  • 15. Try these• Write a balanced chemical equation for the reaction of – Lithium iodide and silver nitrate. – Barium chloride and potassium carbonate.
  • 16. Combustion Reactions• A substance burning in oxygen.• Combustion reactions usually involve hydrocarbons.• Complete combustion results in the formation of water and carbon dioxide.• Incomplete combustion results in the formation of soot and carbon monoxide.
  • 17. Examples• Write a balanced chemical equation for the complete combustion of Propane, C 3 H8• Write a balanced chemical equation for the incomplete combustion of Propane.

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