5 - The Mole

Atoms and molecules are so small, but chemists use a method of counting by weighing to measurement amounts. This is very useful as we see the information contained in a balanced chemical equation. This will lead us into stoichiometry: a concept that looks funny and might be scary to learn, but once you've got it you have just accomplished a major part of chemistry. To be discussed: molar ratios, mole:mole stoichiometry, limiting and excess reactants, and percent yield.

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Practice/ Handouts

Mole Conversions 🔑

Extra Mole Practice 🔑

Percent Composition 🔑

Empirical Formula Practice

Extra Empirical Formula 🔑

Practice Quizzes

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Quiz #5.1 - Mole Practice

Quiz #5.2 - Percent Composition

Quiz #5.3 - Empirical Formulas

Quiz #5.4 - Chemical Quantities Mixed

Quiz #5.5 - Intro Stoichiometry (Part 1)

Quiz #5.6 - Intro Stoichiometry (Part 2)

Quiz #5.7 - Limiting Reactant Practice

Quiz #5.8 - Limiting Reactant Challenge

Quiz #5.9 - Limiting and Excess Reactant

Quiz #5.10 - Percent Yield & Limiting Reactant

Labs/ Activities