Understanding Moles and Avogadro's Number in Chemistry

Flashcards covering key concepts related to moles, Avogadro's number, and basic chemical measurements.

Avogadro's Number

6.022 x 10^23, the number of atoms or molecules in one mole.

Mole

A unit of measurement in chemistry that represents 6.022 x 10^23 of any substance, used for counting atoms or molecules.

Atomic Mass Unit (amu)

A unit of mass used to express atomic and molecular weights, equal to 1/12 of the mass of a carbon-12 atom.

Molar Mass

The mass of one mole of a substance, typically expressed in grams per mole.

Mole Calculation

Using the molar mass to convert between grams of a substance and the number of moles.

Counting Number

A number used to count specific items, like a mole for particles.

Conversion Factor

A ratio used to convert between units, such as grams to moles.

Lithium Atomic Mass

Approximately 6.941 amu; the molar mass of lithium is 6.941 grams.

Density in Chemistry

The mass per unit volume of a substance, often expressed in grams per cm³.

Significance of Moles

Moles allow chemists to count particles in a more convenient way than individual atoms or molecules.