A comprehensive set of teaching resources for the Acids and Bases topic, covering both Standard Level (SL) and Higher Level (HL) content. This bundle includes PowerPoint presentations, worksheets, support worksheets, a key terminology sheet, and mark schemes.

What’s included:

• PowerPoint Presentations – Engaging, clearly structured slides covering all key concepts for SL and HL
• Worksheets – Practice questions to consolidate student understanding
• Support Worksheets – Scaffolded versions to aid students who need additional guidance
• Key Terminology Sheet – A reference sheet covering essential vocabulary and definitions
• Mark Schemes – Full mark schemes for all worksheets to support self-assessment and teacher marking

Standard Level topics covered:

• Brønsted–Lowry acids donate H⁺; bases accept H⁺
• Conjugate pairs differ by one proton
• pH = −log₁₀[H⁺]; Kw = [H⁺][OH⁻]
• Strong acids/bases are fully ionized; weak are partially ionized
• pH curves have characteristic shapes
• Equivalence point ≠ end point

Higher Level topics covered:

• pOH = −log₁₀[OH⁻]; pH + pOH = 14
• Ka and Kb quantify acid/base strength; Ka × Kb = Kw
• Salt pH depends on the strength of the parent acid/base
• Indicators are weak acids — choice depends on equivalence point pH
• Buffers resist pH change using weak acid/conjugate base pairs
• Buffer pH depends on Ka and the [HA]/[A⁻] ratio

Suitable for IB Chemistry (or equivalent A-Level/pre-university chemistry courses).