Solutions & Concentrations (Core Chemistry Skills)

Course Overview

The Solutions & Concentrations (Core Chemistry Skills) course gives learners a clear, exam-focused mastery of the chemistry calculations that appear repeatedly in IGCSE and O Level papers—especially in structured questions involving concentration, dilution, solubility, purity, percentage yield, and limiting reagent. Many students lose marks not because the chemistry is “hard,” but because they lack a reliable method, correct units, and mark-scheme language. This course fixes that.

Using structured explanations, multiple worked examples, exam tips, common-error warnings, interactive quizzes, and high-quality LearnStalk explainer videos, learners will build fast recall, strong problem-solving routines, and accurate exam answers. Whether you are preparing for mocks, revising for finals, or strengthening your chemistry foundation for advanced topics, this course guides you step by step from core concepts to confident exam performance.

What You Will Learn

• Define and calculate concentration using key units such as g/dm³ and mol/dm³, and interpret concentration in exam scenarios.
• Master dilution problems using method-based steps (including C₁V₁ = C₂V₂) and avoid common unit mistakes.
• Explain solubility clearly, apply solubility data to calculations, and handle typical exam questions on saturated solutions and crystallization.
• Calculate percentage purity accurately and connect purity to real lab/exam contexts such as ores, contaminated solids, and product quality.
• Calculate percentage yield using theoretical yield vs actual yield, and explain why yield is not 100% using mark-scheme reasons.
• Identify the limiting reagent and use it to calculate the maximum amount of product formed, including mixed mass–mole exam questions.

Why This Course Matters
In IGCSE/O Level chemistry, calculation topics are “high-frequency marks.” Examiners reward learners who can apply a consistent method with correct units and clear working. Many students memorize formulas but still lose marks due to unit confusion, incorrect mole ratios, poor rounding, or skipping key steps. This course trains you to think like an examiner: identify the data, choose the correct method, show clean working, and deliver a final answer that is accurate, unit-correct, and mark-scheme-ready.

Course Features

• High-quality LearnStalk explainer videos aligned to IGCSE/O Level outcomes
• Interactive quizzes and exam-style MCQs to strengthen accuracy and speed
• Rich worked examples with full steps and correct units (g/dm³, mol/dm³, cm³, dm³)
• Exam tips and common errors so you avoid losing easy marks
• Audio recaps for quick revision and reinforcement
• Flashcards for rapid recall of definitions, formulas, and unit conversions
• Discussion prompts to fix misconceptions and improve exam technique

Who Is This Course For?

• IGCSE and O Level learners aiming for A–C grades through stronger method and exam practice.
• Students who struggle with units, formulas, mole ratios, and multi-step calculations.
• Learners who want a revision-friendly course with quizzes, flashcards, and audio recaps.
• Any student preparing for mocks, finals, or chemistry-heavy subjects that require strong calculation skills.

Course Price
$14 – Full Access