Stoichiometry and the Mole Concept · Stoichiometry

Empirical and Molecular Formulae

Determining the simplest and actual ratios of elements in a chemical compound.

Key Questions

  1. 1How can percentage composition data be used to reveal the identity of an unknown substance?
  2. 2What is the difference between a formula unit and a molecular formula?
  3. 3How does combustion analysis provide evidence for the structure of organic molecules?

MOE Syllabus Outcomes

MOE: Chemical Formulae - S3MOE: Stoichiometry - S3
Level: Secondary 3
Subject: Chemistry
Unit: Stoichiometry and the Mole Concept
Period: Stoichiometry

Suggested Methodologies

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The Mole and Molar Mass

Bridging the gap between the microscopic number of atoms and macroscopic measurable mass.

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Reacting Masses and Volumes

Using balanced equations to predict the outcomes of chemical reactions and identify limiting reagents.

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