Chemistry Mole Conversion – 16-Problem Practice
- Year groups
- Secondary and Sixth Form, Lower Secondary, Years 9–12
- File type
- Microsoft Word
- Subject
- Chemistry, Science
- Topic
- Chemistry, Mole Conversion Practice
- Resource types
- Worksheets, Worksheets & Printables
From the author
About this resource
With this resource students will complete 16 practice problems doing conversion calculations between moles, atoms, and mass.
Answer key included and doc can be edited.
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In the classroom
Teaching tips & learning objectives
Learning objectives
Student can calculate the molar mass of a compound from its chemical formula.
Student can convert between grams and moles using molar mass as a conversion factor.
Student can convert between moles and number of particles using Avogadro's number.
Teaching tips
Have students complete the six molar-mass calculations first, since those values are then reused as the conversion factor in the mole-to-gram problems that follow.
Model the two standard conversion-factor setups (1 mole = molar mass; 1 mole = 6.02x10^23 particles) shown at the top of the sheet before assigning the problems independently.
Use the worked answer key to spot-check whether students are showing dimensional-analysis setups, not just final numeric answers.
Skills covered
Molecular mass calculation — students sum atomic masses to find the molar mass of six compounds (e.g., KOH, H2SO4, Mn2Se7).
Mole-to-particle conversion — students use Avogadro's number (6.02x10^23) to convert between moles and atoms or molecules.
Mole-to-mass conversion — students convert between grams and moles using molar mass for substances such as magnesium, iron, and calcium phosphate.
Good to know
Questions teachers ask about this resource
Why does the worksheet start with molecular-mass calculations before the conversion problems?
Molar mass is one of the two conversion factors used throughout the mole problems, so working it out for six compounds first gives students the values they need before applying dimensional analysis to the grams-moles-particles conversion problems that follow.
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Resource details
Concepts & topics
Core concepts
Core concepts
Mole concept
Molar mass
Avogadro's number
Stoichiometry
Topics
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