Grade 12 Physical Sciences Term 2 Overview

Introduction

• Presenter: Miss Martin
• Purpose: Overview of Grade 12 Term 2 topics in physical sciences
• Resources: Free document available on Miss Martin's website
• Reminder: Check with your school for the order of topics
• Highlight: Importance of ATPs (Annual Teaching Plans)

Key Topics for Term 2

1. Work, Energy, and Power (Physics)

• Core Concepts:
  • Definition of work
  • Positive, negative, and net work
  • Drawing force and free body diagrams
• Work Energy Theorem:
  • Application on horizontal, vertical, and incline planes
• Conservative and Non-Conservative Forces:
  • Definitions and examples
• Principle of Conservation of Mechanical Energy
• Power:
  • Calculation and definition
• Preparation Tips:
  • Review energy concepts from Grade 10
  • Recap Newton's laws, especially net force

2. Doppler Effect (Physics)

• Core Concepts:
  • Definition and impact on sound (source and listener movement)
  • Application to light
• Preparation Tips:
  • Revise waves from Grade 10 (frequency, wavelength, wave speed)

3. Rates and Extent of Chemical Reactions (Chemistry)

• Core Concepts:
  • New formula (not given on data sheet)
  • Factors influencing rate of reaction (temperature, etc.)
• Preparation Tips:
  • Review energy and change, activation energy, catalysts from Grade 11
  • Understand Collision Theory and stoichiometry

4. Chemical Equilibrium (Chemistry)

• Core Concepts:
  • Reversible reactions and KC value
  • Le Chatelier's Principle
• Preparation Tips:
  • Strengthen understanding of stoichiometry
  • Familiarize with textbook concepts

5. Acids and Bases (Chemistry)

• Core Concepts:
  • Definitions according to Arrhenius and Bronsted-Lowry
  • Distinguishing between strong/weak and concentrated/dilute acids/bases
  • Conjugate acid-base pairs
  • pH calculations
• Preparation Tips:
  • Recap Grade 11 acids and bases topic
  • Practice stoichiometry

Study Resources

• Formula Sheets:
  • Highlighted formulas given in exams
  • Explanation of non-highlighted formulas
• Document Resources:
  • Free downloadable document from Miss Martin's website
  • Includes prelim and final exam information

Conclusion

• Encourage students to download the document and subscribe to the channel for more resources and videos on these topics.
• Emphasis on exam preparation videos coming soon.