Shapes Of Covalently Bonded Lesson Plan Template Page 2
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4Have students name the molecules they have been drawing.
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Pass out copies of the images I made to explain tetrahedral, trigonal pyramidal,
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and bent.
Day 7:
With images of larger molecules, identify the shape you’d expect to see at
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various parts of the molecule.
Short description of lesson
Students review ionic vs covalent compounds
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Students will be able to identify how many bonds each atom can ordinarily
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make
Students will demonstrate using the HONC 1234 rule to draw pictures of covalent
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molecules
Students will learn how the lone pair affects the alignment of the other atoms
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connected to the central atom.
Students will learn the names of the shapes of molecules.
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California Curriculum Standards met in this lesson:
California Science Standards: Chemical Bonds
Biological, chemical, and physical properties of matter result from the ability of atoms to
form bonds from electrostatic forces between electrons and protons and between
atoms and molecules. As a basis for understanding this concept:
Students know chemical bonds between atoms in molecules such as H2, CH4,
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NH3, HCCH2, N2, Cl2, and many large biological molecules are covalent.
Students know how to draw Lewis dot structures.
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Students know how to predict the shape of simple molecules and their polarity
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from Lewis dot structures.
Students know how electronegativity and ionization energy relate to bond
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formation.
Instructional Objectives:
Students determine how many valence electrons there are for each non-metal
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and therefore also figure out how many gaps the atoms have.
Based on the number of gaps, students figure out how the atoms should bond
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covalently.
After figuring out how many bonds need to form or in the process of learning
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how many bonds need to be made, students draw molecules using Lewis Dot
diagram methods.
After drawing the Lewis Structures, students learn how having a lone pair on the
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central atom affects the shape of the molecule.
Instructional Procedures:
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