Chemistry Unit 9

Big Idea:

Learn the different definitions of acids and bases, their conductivity, neutralization reactions, measurement of acid and base concentration in terms of pH and titration, and the dissociation of strong and weak acids and bases.

Student Expectations:

Priority TEKS

C.10(H) define pH and calculate the pH of a solution using the hydrogen ion concentration.

Focus TEKS

C.10(E) distinguish among types of solutions such as electrolytes and nonelectrolytes, unsaturated, saturated, and supersaturated solutions; and strong and weak acids and bases.

C.10(G) define acids and bases and distinguish between Arrhenius and Bronsted-Lowry definitions and predict products in acid-base reactions that form water.

Ongoing 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.8(A) define and use the concept of a mole.

C.8(B) calculate the number of atoms or molecules in a sample of material using Avogadro's number.

C.10(A) describe the unique role of water in solutions in terms of polarity

C.10(C) calculate the concentration of solutions in units of molarity.

C.10(E) distinguish among types of solutions such as electrolytes and nonelectrolytes, unsaturated, saturated, and supersaturated solutions; and strong and weak acids and bases.

C.3(F) describe the history of chemistry and contributions of scientists

Student Learning Targets:

• I will analyze acids and bases.
• I will define acids and bases according to the Arrhenius, Bronsted-Lowry, theories and give examples of each.
• I will identify the Bronsted-Lowry conjugate acid-base pairs and conjugate base-acid pairs in a given reaction.
• I will identify strengths of acids and bases.
• I will analyze the pH and pOH scale.
• I will explain the water ionization constant, Kw, and relate it to [H+] & [OH-].
• I will predict whether an aqueous solution of a salt is acidic, basic, or neutral.
• I will perform calculations with weak and strong acids and bases.
• I will calculate pH and pOH given [H+] & [OH-].
• I will calculate the pH & pOH of a strong acid & base given its concentration.
• I will identify and determine the products of an acid-base reaction.
• I will identify an acid or a base as strong or weak and relate that to electrolytic properties.

Essential Questions:

• In what ways can the types of chemical reactions be differentiated?
• What is the process for predicting the other product of an acid base reaction that produces water?
• In what ways are the Arrhenius and Brønsted-Lowry definitions of acids and bases similar and different?
• In what ways can the properties of acids and bases be calculated and classified?

Extra Information:

Adopted Textbook: Chemistry, Pearson

District Grading Policy

Texas Gateway Online Resource Center