General and Physical Chemistry: Mole Concept and Stoichiometry

Flashcards for General and Physical Chemistry Lesson 5: Mole Concept and Stoichiometry

Mole (mol)

The S.I. unit of amount of substance.

Avogadro's Number

A number that represents the number of atoms or molecules in one mole of a substance (6.02 x 10^23).

Molar Mass

The mass of one mole of a substance, expressed in grams per mole (g/mol).

Chemical Equation

Uses chemical symbols to show what happens during a chemical reaction.

Molar Ratio

The ratio of the number of moles of compounds involved in a chemical reaction.

Limiting Reactant

The substance which is totally consumed when the chemical reaction is complete.

Excess Reactant

The substance present in quantities greater than necessary to react with the quantity of the limiting reactant.

Couple

Grouping numbers together

Dozen

Grouping numbers together

Century

Grouping numbers together