Chemistry Naming & Formulas: Polyatomic Ions & Hydrates Guided Inquiry Lesson

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Naming and Formulas: Polyatomic Ion Compounds and Hydrates Lesson
This is a student-centered, active learning lesson without lecture or notetaking!

This lesson presumes a basic understanding of how to name and write the formulas for binary ionic compounds.

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Texas Chemistry Standards (TEKS)
C.7.A: The student is expected to name ionic compounds containing main group metals, … using International Union of Pure and Applied Chemistry (IUPAC) nomenclature rules.
C.7.B: The student is expected to write the chemical formulas of common polyatomic ions, ionic compounds containing main group metals…
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Lesson Summary:
This guided inquiry lesson enables students to be able to construct their own understanding of how to name and write the formulas for polyatomic ion compounds and hydrates. Students are able to actively learn the material without lecture or note taking.

Polyatomic Ions

Part 1: Naming Polyatomic Ion Compounds
• Students observe a list of polyatomic ion formulas. They discover that most polyatomic ions are negatively charged and located at the ends of compounds. Students practice identifying and naming polyatomic ions in compounds.

• Students compare the names and formulas of compounds that contain polyatomic ions. They discover that the names of polyatomic ions do not change in compound names.

• Students use a chart to practice naming compounds containing polyatomic ions from formulas.

Part 2: Writing Polyatomic Ion Compound Formulas
• Students use cards and a formula template to learn how to write polyatomic ion compound formulas from the charge numbers of elements and polyatomic ions.

• Students use a chart to help them practice writing polyatomic ion compound formulas from names.

Hydrates

Naming and Writing Hydrate Formulas
• Students compare illustrated models of several hydrate compounds. They discover that hydrate compounds contain one or more loosely attached water molecules.

• Students compare the names and formulas of hydrate compounds. They discover the correct ways to use symbols and number prefixes to describe the presence of water molecules in a compound.

• Students use charts to practice naming and writing formulas for hydrate compounds.

Polyatomic Ion Compound/Hydrate Task Cards
Students use task cards to practice naming and writing the formulas for polyatomic ion compounds and hydrates.

Student Study Sheet
Students are provided with a student study sheet summarizing all of the important concepts and vocabulary in this lesson.

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Learning Objectives (Bloom’s Revised Taxonomy):
Remembering: Explain the following terms: polyatomic ion, hydrate.
Understanding: Identify the polyatomic ions and number of water molecules in a compound.
Applying: Write the names of polyatomic ion and hydrate compounds when given the formulas. Write the formulas for polyatomic ion and hydrate compounds when given the names.
Evaluating: Discuss how polyatomic ions and water molecules are identified and characterized in a compounds.

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Included in this Download:
• Cover page (1 page)
• Guided inquiry lesson (14 pages)
• Handouts (3 pages)
• Polyatomic Ion Formula Cards (5 pages)
• Task cards (color) – 6 versions (18 pages)
• Task card answers (6 pages)
• Student study sheet (2 pages)
• Teacher notes (2 pages)
• Guided inquiry lesson with suggested answers (14 pages)

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Kendo's Chemistry Store
Total Pages
65
Answer Key
Included
Teaching Duration
1 hour

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Chemistry Naming & Formulas: Polyatomic Ions & Hydrates Gu
Chemistry Naming & Formulas: Polyatomic Ions & Hydrates Gu
Chemistry Naming & Formulas: Polyatomic Ions & Hydrates Gu
Chemistry Naming & Formulas: Polyatomic Ions & Hydrates Gu
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