Chemistry Unit 7

Big Idea:

Use the mole concept while being introduced to balancing equations, reaction types, and stoichiometry.

Student Expectations:

Priority TEKS

C.8(G) perform stoichiometric calculations, including determination of mass and gas volume relationships between reactants and products and percent yield

C.8(H) describe the concept of limiting reactants in a balanced chemical equation

Focus TEKS

C.8(E) write and balance chemical equations using the law of conservation of mass

C.8(F) differentiate among double replacement reactions, including acid/base reactions and precipitation reactions, and oxidation-reduction reactions such as synthesis, decomposition, single replacement, and combustion reactions

Ongoing TEKS

C.7(A) name ionic compounds containing main group or transition metals, covalent compounds, acids, and bases, using International Union of Pure and Applied Chemistry (IUPAC) nomenclature rules

C.7(B) write the chemical formulas of ionic compounds containing representative elements, transition metals and common polyatomic ions, covalent compounds, and acids, bases;

C.8(A) define and use the concept of a mole;

C.8(B) calculate the number of atoms or molecules in a sample of material using Avogadro's number

C.3(B) communicate and apply scientific information extracted from various sources such as current events, published journal articles, and marketing materials

C.3(D) evaluate the impact of research on scientific thought, society, and the environment

C.3(E) describe the connection between chemistry and future careers

C.3(F) describe the history of chemistry and contributions of scientists

Student Learning Targets:

• I will determine mole ratios from a balanced chemical equation.
• I will use a balanced chemical reaction to calculate the amounts of reactants and products for a reaction.
• I will identify the limiting reactant and excess reactant and calculate the amount of remaining excess reactant after the reaction is complete.
• I will determine the percent yield from the actual and theoretical yield of a chemical reaction.
• I will describe, characterize and give an example of each of the following reaction classifications: synthesis (composition), decomposition, single replacement, double replacement, combustion.
• I will use reaction classification to predict the products of single replacement, double replacement, and complete combustion reactions.
• I will use the activity series and solubility table to predict whether a single replacement reaction occurs and if a precipitant will form.
• I will identify the reduction and oxidation components of a REDOX reaction.
• I will assign oxidation numbers to elements.

Essential Questions:

• Why should a chemist balance a chemical equation prior to performing a reaction?
• How does a chemist differentiate between the types of reactions?
• In what ways are reactants and products in a chemical reaction quantified?

Extra Information:

Adopted Textbook: Chemistry, Pearson

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