Chemistry Grade 12: Semester 1

Description

Dear Learner,

This module covers fundamental concepts and principles of acid-base equilibria and electrochemistry. It provides a comprehensive understanding of various acid-base theories, the behavior of weak acids and bases, and the principles of redox reactions and electrolysis. By the end of this module, students will be able to describe and apply these concepts in various chemical contexts and practical applications. While this online learning shares many of the fundamental design principles of effective activities, assessments, and interactions used in other learning contexts, it is worth considering the unique set of teaching conditions that the online environment generates.

Interactions between instructors, course content, and learners in online courses are influenced by  physical and social distances, familiar and unfamiliar types of teaching technologies, and cognitive, affective, and motivational challenges as well as opportunities.

As you work through this module, you will be asked to think about the following key questions:

• Do my activities and assessments help learners develop core skills and competencies that align with my course learning outcomes?
• Have I structured my activities and assessments to help to build academic integrity?
• Are my assessments authentic, reflecting discipline-specific, real-world problems and challenges?
• Do my activities and assessments follow the principles of universal design for learning?
• Do my activities and assessments help to foster learner engagement and build community in the course?

Competencies

Up on the completion of this module, you should be able to:

• Explain and differentiate between the Arrhenius, Bronsted-Lowry, and Lewis acid-base theories, including the concepts of conjugate acid-base pairs.
• Calculate and analyze ionic equilibria, including water ionization and ion product calculations, to understand the behavior of weak acids and bases.
• Apply the common ion effect to predict changes in ionization and explain the composition, function, and pH stability of buffer solutions.
• Calculate pH values for buffers, understand buffer solution composition, and predict their role in maintaining pH stability in various solutions.
• Describe salt hydrolysis, predict the resulting pH, and identify and select appropriate indicators for accurate acid-base titrations.
• Conduct and interpret acid-base titrations using titration curves to determine concentrations and understand the roles of different indicators.
• Explain oxidation-reduction reactions, apply Faraday’s laws in electrolysis, and describe both voltaic cells and industrial electrolysis applications.

Contents

1. Acid-Base Equilibria

Lesson 1: Acid-Base Concepts

Lesson 2: Ionic Equilibria of Weak Acids and Bases

Lesson 3: Common Ion Effect and Buffer Solutions

Lesson 4: Hydrolysis of Salts and Acid-Base Titrations

Lesson 5: Acid–Base Indicators and Titrations

2. Electrochemistry

Lesson 6: Oxidation-Reduction Reactions

Lesson 7: Electrolysis of Aqueous Solutions

Lesson 8: Quantitative Aspects of Electrolysis

Lesson 9: Industrial Application of Electrolysis and Voltaic Cells

Assessment

Assessment in this module may include:

All assessments consist of automatically graded multiple-choice questions with explanatory feedback. Each question offers four answer choices, marked by small square checkboxes. While the options may not always be labeled A, B, C, or D, you can interpret the checkboxes in that order.

• Quizzes, Tests and assignments 
• Mid-term exam
• Laboratory reports (Optional) 
• Final exam

Reference

• Chemistry grade 12 student text book based on new curriculum
• Extreme chemistry for grade 11-12
• Alpha chemistry for grade 11-12
• Learning websites