Grade: High School - 3

C.3.3
Draw structural formulas for simple molecules and determine their molecular shape.

I Can Statements Academic Vocabulary
I can draw structural formulas for simple molecules.

I can determine the molecular shape of simple molecules from a structural formula.

Lewis Structure
VSEPR Theory
Molecular geometry
Valence electrons
Chemical bonds
Single bonds
Double bonds
Triple bonds

Cross Cutting Concepts
Patterns
*Empirical evidence is needed to identify patterns.

System and System Model
*Models (e.g., physical, mathematical, computer models) can be used to simulate systems and interactions—including energy, matter, and information flows—within and between systems at different scales.

Structure and Function
*The functions and properties of natural and designed objects and systems can be inferred from their overall structure, the way their components are shaped and used, and the molecular substructures of its various materials.

Science and Engineering Process Standards
SEPS 2: Developing and Using Models
Looking Back Looking Ahead
Draw, construct models, or use animations to differentiate between atoms, elements, molecules, and compounds. (7.PS.1)

Create models to represent the arrangement and charges of subatomic particles in an atom (protons, neutrons and electrons). (8.PS.1)

The student is able to use Lewis diagrams and VSEPR to predict the geometry of molecules, identify hybridization, and make predictions about polarity. (AP Chemistry LO 2.21)

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