Chemistry Unit 5

Big Idea:

IUPAC conventions for naming chemical compound, represent bonding with Lewis dot structures and apply VSEPR theory to identify covalent molecular shapes and predict polarity.

Student Expectations:

Priority TEKS

C.7(A) name ionic compounds containing main group or transition metals, covalent compounds, acids, and bases, using International Union of Pure and Applied Chemistry (IUPAC) nomenclature rules

C.7(B) write the chemical formulas of ionic compounds containing representative elements, transition metals and common polyatomic ions, covalent compounds, and acids, bases;

C.7(D) describe metallic bonding and explain metallic properties such as thermal and electrical conductivity, malleability, and ductility; and

Focus TEKS

C.7(C) construct electron dot formulas to illustrate ionic and covalent bonds

C.7(E) classify molecular structure for molecules with linear, trigonal planar, and tetrahedral electron pair geometries as explained by [using] Valence Shell Electron Pair Repulsion (VSEPR) theory.

Ongoing TEKS

C.5(B)[Readiness] identify and explain the properties of chemical families, including alkali metals, alkaline earth metals, halogens, noble gases, and transition metals, using the Periodic Table.

C.6(D) express the arrangement of electrons in atoms through electron configurations and Lewis valence electron dot structures

C.2(C) know that scientific theories are based on natural and physical phenomena and are capable of being tested by multiple independent researchers. Unlike hypotheses, scientific theories are well established and highly reliable explanations, but may be subject to change as new areas of science and new technologies are developed

C.2(D) distinguish between scientific hypotheses and scientific theories

Student Learning Targets:

• I will describe characteristics of ionic bonding.
• I will illustrate bond formation through electron transfer and formation of positive and negative ions.
• I will describe physical properties of ionic compounds.
• I will write formulas and name ionic compounds.
• I will explain how ions are formed and determine the number of electrons gained or lost based on ionic charge.
• I will describe characteristics of covalent bonding
• I will describe the physical characteristics of covalent compounds.
• I will illustrate bond formation through electron sharing using Lewis Dot structures.
• I will use VSEPR theory and Lewis dot structures to classify the molecular geometry of a molecule.
• I will write formulas and name covalent compounds.
• I will identify polarity of bonds using electronegativities.
• I will use polarity of bonds and molecular geometry to determine polarity of a molecule.
• I will describe the physical characteristics of bonding in pure metals.
• I will use the bonding in pure metals to explain metallic properties.

Essential Questions:

• How are electron dot formulas used to model bonds?
• How does the nature of metallic bonding apply to metallic properties?
• How is Valence Shell Electron Pair Repulsion (VSEPR) theory used to predict molecular structure for molecules?
• What is the process for naming compounds?
• What is the process for deriving a chemical formula from a compound name?

Extra Information:

Adopted Textbook: Chemistry, Pearson

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