The Helpful Chemist

Topic 01

Atomic Structure and the Periodic Table

From the inside of an atom to trends across the periodic table. Understand atomic structure and the rest of chemistry — bonding, reactions, everything — starts to make sense.

2 sub-topics · 21 lessons

Atomic Structure and the Periodic Table1a. Atoms, Elements, Compounds and MixturesBalancing Chemical Equations

Atomic Structure and the Periodic Table

Lesson 05 of 14

Balancing Chemical Equations

1a. Atoms, Elements, Compounds and Mixtures1 video

Key Concepts

  • Law of Conservation of Mass
  • Balanced chemical equations
  • Reactants and products
  • Coefficients
  • Atom counting
  • Combustion equations
  • Symbol equations

Lesson notes

If balancing equations feels like guesswork, this video gives you a method that turns it into a systematic process. You'll start with the Law of Conservation of Mass, understand why equations must balance, and then work through a series of examples from simple single-step reactions to combustion equations — building confidence and speed as you go.

What You Will Learn

00:54What the Law of Conservation of Mass states and why it requires equations to be balanced.

02:16What coefficients are and how they differ from subscripts when balancing equations.

04:26How to count atoms on each side of an equation to check whether it is balanced.

05:50How to balance a simple equation step by step using the atom-counting method.

10:59How to balance combustion equations where both carbon and hydrogen must be balanced.

12:35How to check a final equation by counting every atom type on both sides and confirming they match.

PDF

Balancing Chemical Equations — Questions

Practice worksheet

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PDF

Balancing Chemical Equations — Answers

Mark scheme

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Course Topics
General Introduction
Working Scientifically
Atomic Structure
Bonding & Structure
Quantitative Chemistry
Chemical Changes
Energy Changes
Rate of Reaction
Organic Chemistry
Chemical Analysis
Earth's Atmosphere
Using Resources