Balancing Equations Practice – 35 Chemistry Problems

Product description

From the author

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.

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

Model balancing by counting atoms and changing coefficients, never subscripts.
Correct Set 2 question 8 to coefficients 2, 15, 14, 6; question 9 needs a coefficient of 2 before H2 for the printed Fe2O2 formula.
Check the unusual Fe2O2 and Fe2O4 formulas and reaction plausibility before using these as chemistry examples. A balanced symbolic equation does not establish that a reaction occurs.

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

What should students check as they balance each equation?

Count atoms of each element on both sides and adjust coefficients until the totals match. Remind students to change coefficients rather than the subscripts in chemical formulas.

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Resource details

Concepts & topics

Core concepts

Chemical equation balancing
Conservation of mass
Stoichiometry basics

Topics

Balancing equations Chemical equations Coefficients Chemistry practice Answer key

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