Limiting Reactants Worksheet with Answer Key

Limiting reactant practice with eight stoichiometry word problems: students convert reactant amounts to moles, identify the limiting reactant, and calculate the mass or moles of product formed.
Year levels
Years 8–11
File type
Microsoft Word

Updated Sep 18, 2026

Subject
Chemistry, Science
Topic
Chemistry, Limiting Reactants
Resource types
Worksheets

From the author

About this resource

Limiting Reactants Practice

This resource is great to have students determine the limiting reactant and then solve for the unknown mass and moles below.

Answers included.

In the classroom

Teaching tips & learning objectives

Learning objectives

  • Identify the limiting reactant from given masses or moles

  • Calculate the mass or moles of product formed from the limiting reactant

Teaching tips

  • Students need molar masses from a periodic table for the mole conversions

Skills covered

  • Mole conversions — changing given masses of reactants into moles

  • Stoichiometry — using mole ratios from a balanced equation to find product amounts

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Resource details

Concepts & topics

Core concepts

  • Limiting reactant

  • Stoichiometry

  • Mole ratio

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