Comprehensive Study Notes on Percent Composition

Vocabulary flashcards covering key definitions, formulas, and principles of percent composition by mass from the lecture notes.

Percent Composition

A breakdown of the percentages by mass of all the elements in a compound.

Percent Composition Formula

The mathematical relationship expressed as $\% \text{ composition} = \frac{\text{total mass of element in the compound}}{\text{total mass of the compound}} \times 100\%$.

Percentage by Mass of an Element

A calculation equal to $100\%$ times the ratio of the total mass of the element divided by the formula mass of the compound.

Percent Composition Conversion Factor

A ratio derived from percent composition values used to calculate how many grams of an element are in a given sample of a compound, or how many grams of a compound can be formed from a given mass of an element.

Mass Bases for Percent Composition

The two equivalent unit bases used to calculate percent composition: formula masses in atomic mass units or molar masses in $g\,mol^{-1}$.

Percent Composition Applicability

The rule stating that the percent composition calculation is performed in the exact same way regardless of whether a compound is covalent or ionic.