Unit Conversions, Density, and Significant Figures (Vocabulary Flashcards)

Vocabulary flashcards covering density, mass, volume, conversion factors, dimensional analysis, square units, liter/milliliter, and significant figures as presented in the notes.

Density

Mass per unit volume (d = m/V); commonly in g/cm³ or g/mL; can act as a conversion factor between mass and volume.

Mass

Amount of matter in an object; symbolized as m; related to density and volume by m = d × V.

Volume

Amount of space occupied by an object; symbolized as V; used with density to find mass or vice versa.

Conversion Factor

A ratio equal to 1 used to convert between units (e.g., 1 L = 1000 mL; 1 ft = 12 in).

Dimensional Analysis (Factor-Label Method)

A method of unit conversion that uses conversion factors to cancel unwanted units and obtain desired units.

Liter (L)

Unit of volume; 1 L = 1000 mL.

Milliliter (mL) is equivalent to what other unit

Unit of volume equal to 1 cm³; 1 mL ≈ 1 cm³.

Density as a Conversion Factor

Density links mass and volume, so it can be used to convert between m and V when given d.

Significant Figures

Rules for expressing precision: in multiplication/division, the result has as many sig figs as the factor with the fewest sig figs; in addition/subtraction, the result has the decimal place of the least precise measurement.

Multiplication/Division Sig Figs Rule

Result should have the same number of significant figures as the factor with the smallest number of sig figs.

Addition/Subtraction Sig Figs Rule

Result should be rounded to the least precise decimal place among the operands.