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  • Home
  • Tips and Tricks Blog
  • Science
    • Biology
      • Natural Selection
    • Chemistry
      • Balancing Chemical Equations
      • Covalent Bonds
      • Energy Diagrams
      • Excited Electrons
      • Flame Test
      • Fusion and Fission
      • Half-Life
      • Heat Transfer
      • Intermolecular Forces
      • Ionic Bonds
      • Isotopes
      • Lewis Dot Structures
      • Matter (Part 1)
      • Matter (Part 2)
      • Organic Chemistry
      • Periodic Table (Part 1)
      • Periodic Table (Part 2)
      • Physical Changes and Chemical Reactions
      • Radioactive Decay
      • Solutions and Separation Methods
      • The Atom
      • What is Chemistry?
    • General Science Topics
      • CER
      • Good Research
      • Graphing
      • Lab Equipment
      • Lab Safety
      • Models
      • Scientific Method
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Balancing Chemical Equations

Number of Atoms

The law of conservation of matter states the following: In a chemical reaction the mass of the reactant is always equal to the mass of the products. Also, this means that the number of atoms on each side of a chemical equation must be the same. Watch the following video to learn how to count the number of atoms in a chemical equation.
https://youtu.be/aDAZx69Kndk?t=18
Because the Law of Conservation of Matter, the number of atoms of an element must be the same on the reactant and the product side of a chemical equation. We call this process of equalizing the number of atoms on each side of a chemical equation, balancing a chemical equation.

Balancing a Chemical Equation

There are a set of rules that can be used to balance a chemical equation.

  1. ​Write out the unbalanced equation.
  2. Write out the number of atoms of each element on each side of the equation (reactants and products)
  3. Start with an element that occurs in one substance on both sides of the equation
  4. Continue changing the coefficients to balance all elements
  5. Generally, save O and H for last.

https://youtu.be/eNsVaUCzvLA
For some practice with balancing chemical equations, click on "Game" to practice balancing chemical equations. Additionally, you can click on the "Practice Quiz" button to complete practice questions.
Practice Quiz
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  • Home
  • Tips and Tricks Blog
  • Science
    • Biology
      • Natural Selection
    • Chemistry
      • Balancing Chemical Equations
      • Covalent Bonds
      • Energy Diagrams
      • Excited Electrons
      • Flame Test
      • Fusion and Fission
      • Half-Life
      • Heat Transfer
      • Intermolecular Forces
      • Ionic Bonds
      • Isotopes
      • Lewis Dot Structures
      • Matter (Part 1)
      • Matter (Part 2)
      • Organic Chemistry
      • Periodic Table (Part 1)
      • Periodic Table (Part 2)
      • Physical Changes and Chemical Reactions
      • Radioactive Decay
      • Solutions and Separation Methods
      • The Atom
      • What is Chemistry?
    • General Science Topics
      • CER
      • Good Research
      • Graphing
      • Lab Equipment
      • Lab Safety
      • Models
      • Scientific Method
    • Labs
    • Veterinary Science
      • Canine
      • Feline
      • Introduction to Veterinary Science
      • Terminology
  • Resources
  • Feedback
  • Copyright and Privacy Policy