Quantities & Calculations

Using quantities and calculations to describe chemical systems.

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Chemical systems can be described using quantities and reasoned through using calculations. This section separates understanding what quantities represent from how they are used to solve problems.

Quantities

These pages focus on what quantities represent in chemical systems and the principles that govern them.

Conservation of Mass

Exploring what must remain constant in chemical systems and why mass is conserved during reactions.

Mole Concept

Understanding amount of substance, particle counting, and the role of Avogadro’s number.

Using Quantities in Calculations

These pages focus on using quantities to reason through chemical relationships, equations, and calculations.

Balancing Chemical Equations

Using coefficients as ratios to reason quantitatively about chemical reactions.

Manipulating Formulas

Rearranging equations and solving for unknown quantities using units and relationships.