Limiting Reactants Reagents Practice Problems

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Amy Brown Science
Grade Levels
9th - 12th, Homeschool
Formats Included
  • Zip
15 Pages (6 for student, 9 page solutions guide)
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Amy Brown Science


Mastering stoichiometry calculations takes practice. These worksheets provide 8 multi-part practice problems for students who are learning about limiting reactants. Students will write a balanced chemical equation, determine the limiting reagent, use the limiting reactant to determine unknown products, and determine the left over amount of the reactant in excess.

What is Included?

  • Printable and Editable student handouts in two versions.
  • Paper-saving version: All problems are on a single page. Students complete their work on their own notebook paper. The set of handouts can be used in multiple classes.
  • Version 2 leaves space on the worksheets for students to complete their work. Students will write on each page.
  • The “Sample Instruction Problem” is a one-page handout that shows how to solve stoichiometric calculations involving limiting reactants. You may choose to duplicate the Sample Problem to pass out to your students to use as a guide when solving the practice problems.
  • Detailed and complete Teacher Answer Key showing solutions to all problems.

Prior Knowledge Required:

  • Students must be able to write chemical formulas.
  • Students must understand the differences between the four types of chemical reactions.
  • Students must be able to balance equations.
  • Students need an understanding of the rules used to determine the products of chemical reactions.
  • Students must understand the mole concept.

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Total Pages
15 Pages (6 for student, 9 page solutions guide)
Answer Key
Teaching Duration
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to see state-specific standards (only available in the US).
Use mathematical representations to support the claim that atoms, and therefore mass, are conserved during a chemical reaction. Emphasis is on using mathematical ideas to communicate the proportional relationships between masses of atoms in the reactants and the products, and the translation of these relationships to the macroscopic scale using the mole as the conversion from the atomic to the macroscopic scale. Emphasis is on assessing students’ use of mathematical thinking and not on memorization and rote application of problem-solving techniques. Assessment does not include complex chemical reactions.


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