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In this lesson, students will be able to look at chemical reactions, both on paper and in a lab setting and predict the products of the reaction. This is the last step in the process of writing a chemical equation. Students will:

  • predict the products of the five basic reaction types.

  • write correct formulas for the reactants and products.

  • balance chemical equations.

  • recognize when to incorporate diatomic molecules into a chemical equation.

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  • Diatomic Elements: Chemical elements whose stable form at STP consists of diatomic molecules. The diatomic elements are H2, N2, O2, F2, Cl2, Br2, and I2.

  • Cations: Positive ion.

  • Anions: Negative ion.

  • Ionic Compound: A compound formed from a metal and a nonmetal.

  • Synthesis Reaction: Two or more elements/compounds combine to form a more complex product.

  • Decomposition Reaction: One chemical species breaks down to simpler elements/compounds.

  • Single Replacement Reaction: An uncombined element replaces a less reactive element in a compound, creating a new compound and a single element.

  • Double Replacement Reaction: Involves two ionic compounds (in solution) that trade cations, creating two new compounds.

  • Combustion Reaction: A hydrocarbon (or other organic molecule) burning in oxygen, producing carbon dioxide and water.


90 minutes/2 class periods

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