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What’s Trending with the Elements?

This resource, aligned with Chemistry TEKS (5)(C), provides alternative or additional tier-one learning options for students using the periodic table to identify and explain trends.

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The Bohr Model

Students will understand Bohr’s experimental design and conclusions that lead to the development of his model of the atom, as well as the limitations of his model.

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Valence Shell Electron Pair Repulsion

Given illustrations or descriptions, students will predict the shape of molecules based upon the extent of the electron pair electrostatic repulsion.

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Chemical Bonding: Metallic Bonds

Given scenarios or diagrams, students will describe the nature of metallic bonding and explain properties such as thermal and electrical conductivity, malleability, and ductility of metals.

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Electron Configuration

Given descriptors, diagrams, and chemical symbols, students will use the periodic table to determine the electron configuration of neutral atoms.

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Nomenclature: Covalent Compounds

Given descriptions, diagrams, or scenarios, students will write and name the chemical formulas of binary covalent compounds.

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Ionic Bonds: Electron Dot Formulas

Given descriptions, diagrams, scenarios, or chemical symbols, students will model ionic bonds using electron dot formulas.

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Moles and Molar Mass

Given descriptions or chemical formula of a substance, students will use the concept of a mole to relate atomic mass to molar mass.

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Types of Solutions: Saturated, Supersaturated, or Unsaturated

Given scenarios, graphs, diagrams, or illustrations, the student will determine the type of solution such as saturated, supersaturated, or unsaturated.

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Introducing Conic Sections

Given a verbal description or a pictorial representation, the student will describe a conic section as the intersection of a cone and a plane.

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Graphing Conic Sections: Ellipses

Given an equation, the student will use parameter changes to graph an ellipse and to identify the changes in the graph of an ellipse.

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Graphing Conic Sections: Hyperbolas

Given an equation, the student will use parameter changes to graph a hyperbola and to identify the changes in the graph of a hyperbola.

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Covalent Bonding: Electron Dot Diagrams

Given descriptions, diagrams, scenarios, or chemical symbols, students will model covalent bonds using electron dot formula (Lewis structures).

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Forms of Energy

Given diagrams, illustrations, or descriptions, students will identify the types of energy.

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Law of Conservation of Energy: Heat Transfer

Given illustrations, scenarios, descriptions, and/or diagrams, students will demonstrate understanding of heat transfer.

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Thermochemical Equations

Given descriptions, diagrams, scenarios, or chemical symbols, students will calculate the energy changes and identify exothermic and endothermic reactions.

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Calorimetry

Given scenarios, illustrations, or descriptions, students will identify the process of calorimetry and calculate the heat of a chemical process.

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Water

Given scenarios, descriptions, or illustrations, the student will determine the properties of water that affect chemical and biological systems.

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Making Solutions

Given graphs, scenarios, illustrations, or descriptions, the student will determine how different processes affect solubility in aqueous solutions.

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Precipitation Reactions

Given graphs, scenarios, illustrations, or descriptions, the student will determine how different processes affect solubility in aqueous solutions.