Investigate empirical formulas and their relationships to the composition of a compound. The lesson first demonstrates a percent composition calculation. It then defines an empirical formula and applies it to given masses to determine a molecular formula.

Concepts

chemical compounds, empirical formulas, the empirical formula, compositions, percents, molecular formulas

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Additional Tags

science

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Instructional Ideas

• Provide pupils with a guided notes document to complete as they view the lesson
• Flip your classroom by assigning the lesson as homework; use class time to practice

Classroom Considerations

• Requires a proficiency with calculating percents

• This video is hosted on YouTube

Pros

• Shows each step of the mathematical processes
• Provides examples for each concept

Cons

• None

Common Core

SL.9-10.2 SL.11-12.2 RST.9-10.7 RST.11-12.7