Balancing Equations Practice – 35 Chemistry Problems
- Year groups
- Secondary and Sixth Form, Years 10–13
- File type
- Microsoft Word
- Editable
- Yes
- Subject
- Chemistry, Science
- Topic
- Balancing Equations, Chemistry Practice
- Resource types
- Worksheets, Worksheets & Printables
- Editable
- Yes
From the author
About this resource
With these 35 practice problems, students will be able to put into practice their knowledge of balancing the reactant atoms to product atoms of various reactions.
Questions are of different difficulty levels.
Teacher can edit these according to their lessons.
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In the classroom
Teaching tips & learning objectives
Learning objectives
Balance chemical equations by adjusting coefficients so atoms are conserved.
Apply the law of conservation of mass to reaction equations.
Identify reactants and products in synthesis, replacement, and combustion reactions.
Teaching tips
Assign Set 1 (15 problems) before Set 2 (20 problems), since Set 2 introduces more complex polyatomic-ion equations.
Use the built-in answer key for student self-checking or quick teacher grading.
Review the trial-and-error balancing method with a simple example before assigning the full worksheet.
Skills covered
Chemical equation balancing — students determine coefficients so atom counts match on both sides of 35 reaction equations.
Conservation of mass application — students apply the law of conservation of mass to single/double replacement, synthesis, and combustion reactions.
Chemical formula reading — students interpret polyatomic-ion formulas (e.g., Ca(NO3)2, K2SO4) while balancing equations.
Good to know
Questions teachers ask about this resource
How do the two problem sets in this file differ in difficulty?
The first set of 15 equations uses simpler binary compounds, while the second set of 20 equations introduces polyatomic ions and multi-step reactions such as hydrocarbon combustion.
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Resource details
Concepts & topics
Core concepts
Core concepts
Chemical equation balancing
Conservation of mass
Stoichiometry basics
Topics
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