What's the formula for success? A unique and well-written resource from JFR Science explains empirical and molecular formulas. Young chemists learn the steps and skills required to determine the formulas from percent composition and molar mass.

Concepts

empirical formulas, molecular formulas, spectrometers, mass, ions, data analysis, molar mass

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Additional Tags

science

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Instructional Ideas

• Cover empirical and molecular formulas together to reinforce their relationship
• Show the class what happens inside a mass spectrometer using a short video
  

Classroom Considerations

• Learners must be fluent in percent composition

• This video is hosted on YouTube

Pros

• The comparison and explanations of molecular and empirical formulas are clear and extremely helpful
• Illustrations help show pupils how to set up the problems

Cons

• None

Common Core

SL.9-10.2