UNIT OVERVIEW

This revision unit brings together everything you have learned in Grade 11 Physical Sciences. You will consolidate your understanding and prepare for your final examinations.

What you will revise:

• Mechanics: vectors, Newton's Laws, and gravitation
• Waves: geometric optics, refraction, and diffraction
• Electricity: circuits, electrostatics, and electromagnetism
• Matter: molecular structure and intermolecular forces
• Chemical change: stoichiometry, energy calculations, acid-base reactions, and redox reactions

Why this matters:

Understanding these concepts helps you explain everyday phenomena:

• How forensic investigators use mechanics to reconstruct traffic accidents
• How lenses in spectacles correct vision using refraction
• How your electricity bill is calculated using circuit principles
• How mining companies extract gold using redox reactions
• Why greenhouse gases trap heat (intermolecular forces)

---