Name and describe the five electron pair geometries which can surround the central atom.Differentiate electron pair geometry from molecular geometry.Define the VSEPR theory and explain its relationship to the shape of molecules.Explain electron properties of moleculesīy the end of this activity, students should be able to.Explain structural properties of molecules.SAP-4.C: Based on the relationship between Lewis diagrams, VSEPR theory, bond orders, and bond polarities:.Topic 2.7: VSEPR and Bond Hybridization.SAP-4.B: Represent a molecule with a Lewis diagram that accounts for resonance between equivalent structures or that uses formal charge to select between nonequivalent structures.SAP-4.A: Represent a molecule with a Lewis diagram.SAP-3.B: Represent the relationship between potential energy and distance between atoms, based on factors that influence the interaction strength.Topic 2.2: Intramolecular Force and Potential Energy.SAP-3.A: Explain the relationship between the type of bonding and the properties of the elements participating in the bond.Unit 2: Molecular and Ionic Compound Structure and Properties.SAP-1.A: Represent the electron configuration of an element or ions of an element using the Aufbau principle.Topic 1.5: Atomic Structure and Electron Configuration. ![]() Unit 1: Atomic Structure and Properties.This activity supports the following units, topics and learning objectives: HS-PS1-1: Use the periodic table as a model to predict the relative properties of elements based on the patterns of electrons in the outermost energy level of atoms.This activity will help prepare your students to meet the performance expectations in the following standards: This activity is an extension of the activity, Shapes of Molecules found on the AACT website. Since balloons tend to take up as much space as they can when tied together, they can look like models of central atoms in VSEPR theory, making a great metaphor for the model. In this activity, students will explore Valence Shell Electron Pair Repulsion Theory using balloon models.
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