Chemical Formula Writing & Chemical Equations (Perfect for Exams)

Course Overview

The Chemical Formula Writing & Chemical Equations (Perfect for Exams) course gives learners a clear, step-by-step, exam-focused mastery of how to write accurate chemical formulae (including radicals / polyatomic ions) and how to write and balance chemical equations using mark-scheme-ready rules. It is designed for IGCSE and O Level Chemistry learners who want speed, accuracy, and confidence in the exact skills that appear repeatedly in structured, multiple choice, and practical-related exam questions.

Using structured explanations, many worked examples, exam tips, mnemonics, interactive quizzes, and high-quality LearnStalk explainer videos, learners will build fast recall of ions and valencies, strong application to unfamiliar compounds, and the ability to produce balanced equations without guesswork. Whether you’re revising for mocks, preparing for finals, or fixing gaps in foundational chemistry, this course takes you from the basics to exam-level performance.

What You Will Learn

• Write correct chemical formulae using valency and charge balance, including compounds that contain radicals like nitrate, sulfate, carbonate, hydroxide, and ammonium.
• Apply reliable methods (e.g., criss-cross / charge balancing) to predict formulae for ionic compounds and simplify subscripts to the correct ratio.
• Write clear word and symbol equations using correct reactant → product structure, state symbols (when needed), and correct chemical names.
• Balance chemical equations accurately using the atom-count method and exam strategies for difficult equations, including those with polyatomic ions.
• Differentiate molecular vs empirical formula, and use composition information to move between them in exam-style questions.
• Master a review set of the most common ionic compound formulae tested in IGCSE/O Level, including bracket rules for radicals.
• Use valency patterns and naming clues (especially for transition metals) to predict formulae quickly and avoid common exam traps.

Why This Course Matters
Many learners lose easy marks in Chemistry because they can explain concepts but fail on the high-frequency skills: writing correct formulae, placing brackets properly, and balancing equations under time pressure. IGCSE/O Level questions often test these skills in multiple topics: acids and bases, salts, electrolysis, metals, bonding, and even organic reactions. This course solves that problem by teaching a repeatable rule system—charges must balance, subscripts must simplify, and equations must conserve atoms—so your answers become accurate, fast, and consistent.

Course Features

• High-quality LearnStalk explainer videos aligned to IGCSE/O Level outcomes
• Interactive quizzes and exam-style MCQs for speed + accuracy training
• Rich concept explanations with multiple worked examples and mark-scheme phrasing
• Formula drills and bracket practice for radicals
• Equation balancing practice using structured, exam-friendly methods
• Audio recaps for fast revision and reinforcement
• Flashcards for rapid recall of ions, valencies, and rules
• Exam tips + common errors so you stop losing easy marks

Who Is This Course For?

• IGCSE and O Level learners aiming for A–C grades through stronger exam technique and practice.
• Students who struggle with valency, radicals, brackets, and subscripts when writing formulae.
• Learners who find balancing equations slow or confusing and want a clear method that works every time.
• Any student preparing for mocks, finals, or building a strong foundation for advanced Chemistry topics.

Course Price
$12 – Full Access